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Cookeite

A valid IMA mineral species - grandfathered

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Photos of Cookeite (180)Recorded Ages and Analyses Discuss Cookeite

Cookeite Gallery Search Photos of Cookeite

Edit Cookeite Add Synonym Edit CIF structures Clear Cache

Cookeite, etc.

Pulsifer Quarry & Dionne extension, West Mount Apatite Mining District, Auburn, Androscoggin County, Maine, USA

Cookeite

Bennett Quarry, Buckfield, Oxford County, Maine, USA

Cookeite

Mount Mica Quarry, Paris, Oxford County, Maine, USA

Cookeite, etc.

Pulsifer Quarry & Dionne extension, West Mount Apatite Mining District, Auburn, Androscoggin County, Maine, USA

Cookeite

Bennett Quarry, Buckfield, Oxford County, Maine, USA

Cookeite

Mount Mica Quarry, Paris, Oxford County, Maine, USA

Cookeite, etc.

Pulsifer Quarry & Dionne extension, West Mount Apatite Mining District, Auburn, Androscoggin County, Maine, USA

Cookeite

Bennett Quarry, Buckfield, Oxford County, Maine, USA

Hide all sections | Show all sections

About CookeiteHide

Josiah Parsons Cooke

Formula:

(LiAl₄◻)[AlSi₃O₁₀](OH)₈

Colour:

White, yellowish green, greenish, pink, brown, grey, rarely lilac

Lustre:

Waxy, Greasy, Pearly

Hardness:

2½ - 3½

Specific Gravity:

2.58 - 2.69

Crystal System:

Monoclinic

Member of:

Chlorite Group

Name:

Named in honor of Josiah Parsons Cooke Jr. (12 October 1827, Boston, Massachusetts, USA - 3 September 1894, Newport, Rhode Island, USA), Harvard mineralogist and chemist. A largely self-taught chemist, he was one of the first Americans to teach laboratory chemistry. He made significant contributions to the measurement of atomic weights.

Co-Type Localities:

ⓘ Mount Rubellite Quarries, Mount Rubellite, Hebron, Oxford County, Maine, USA
ⓘ Mount Mica Quarry, Paris, Oxford County, Maine, USA

Isostructural with:

Chlorite Group

Characteristic botryoidal to worm-like aggregates show radial pattern of plates, occasionally showing pearly lustre of basal cleavage.

Forms a solid-solution series with (Li-free) donbassite.

A natural Na analogue may exist (see 'UM1969-13-SiO:AlHNa').
See also borocookeite.

Unique IdentifiersHide

Mindat ID:

1121

Long-form identifier:

mindat:1:1:1121:7

Similar NamesHide

Cokeite

A rock classification type

IMA Classification of CookeiteHide

IMA status:

Approved, 'Grandfathered' (first described prior to 1959)

IMA Formula:

LiAl₄(Si₃Al)O₁₀(OH)₈

First published:

1866

Type description reference:

Brush, G.J. (1866) On cookeite, a new mineral species. American Journal Of Science, 91. p.246-248.

Classification of CookeiteHide

Strunz-mindat (2026):

9.EC.55

9 : SILICATES (Germanates)
E : Phyllosilicates
C : Phyllosilicates with mica sheets, composed of tetrahedral and octahedral nets

Dana 8th ed.:

71.4.1.2

71 : PHYLLOSILICATES Sheets of Six-Membered Rings
4 : Sheets of 6-membered rings interlayered 1:1, 2:1, and octahedra

Hey's CIM Ref.:

16.1.5

16 : Silicates Containing Aluminum and other Metals
1 : Aluminosilicates of Li

Mineral SymbolsHide

As of 2021 there are now IMA–CNMNC approved mineral symbols (abbreviations) for each mineral species, useful for tables and diagrams.

Please only use the official IMA–CNMNC symbol. Older variants are listed for historical use only.

Symbol	Source	Reference for Standard
Ckt	IMA–CNMNC	Warr, L.N. (2021). IMA–CNMNC approved mineral symbols. Mineralogical Magazine, 85(3), 291-320. doi:10.1180/mgm.2021.43
Ckt	The Canadian Mineralogist (2019)	The Canadian Mineralogist (2019) The Canadian Mineralogist list of symbols for rock- and ore-forming minerals (December 30, 2019). download
Ckt	Warr (2020)	Warr, L.N. (2020) Recommended abbreviations for the names of clay minerals and associated phases. Clay Minerals, 55, 261–264 doi:10.1180/clm.2020.30

Pronunciation of CookeiteHide

Pronunciation:

Play	Recorded by	Country
	Jolyon Ralph	United Kingdom

Physical Properties of CookeiteHide

Lustre:

Waxy, Greasy, Pearly

Transparency:

Translucent

Comment:

Pearly luster on basal cleavage

Colour:

White, yellowish green, greenish, pink, brown, grey, rarely lilac

Comment:

Colorless when pure.

Streak:

White

Hardness:

2½ - 3½ on Mohs scale

Tenacity:

Flexible

Cleavage:

Perfect
on {001}

Fracture:

Micaceous

Density:

2.58 - 2.69 g/cm³ (Measured) 2.968 g/cm³ (Calculated)

Optical Data of CookeiteHide

Type:

Biaxial (+)

RI values:

n_α = 1.572 - 1.576 n_β = 1.579 - 1.584 n_γ = 1.589 - 1.6

2V:

Measured: 35° to 60°

Birefringence:

0.014

Max. Birefringence:

δ = 0.017 - 0.024
Based on recorded range of RI values above.

Interference Colours:
The colours simulate birefringence patterns seen in thin section under crossed polars. They do not take into account mineral colouration or opacity.

Michel-Levy Bar The default colours simulate the birefringence range for a 30 µm thin-section thickness. Adjust the slider to simulate a different thickness.

Grain Simulation You can rotate the grain simulation to show how this range might look as you rotated a sample under crossed polars. Each grain retains its interference colour (retardation) while its brightness falls to black at extinction and reaches a maximum between extinction positions.

Thickness: 30 µm Order divisions

Rotation:

Surface Relief:

Moderate (positive)
Relative to Canada balsam mounting medium (n ≈ 1.537).

This shows the grain boundary and Becke line effect under plane-polarised light, based on the contrast between this mineral's average refractive index and the mounting medium. It does not take into account mineral colouration.

Focus:

In focus

Interference Figure:

This shows the idealized biaxial acute bisectrix (Bxa) interference figure - the conoscopic view for a grain cut perpendicular to the acute bisectrix, using this mineral's 2V. The two small white dots mark the melatopes - the points where the two optic axes emerge - and are shown only when they fall within the field of view. The coloured bands are isochromatics, and the dark bands are isogyres.

Rotate the stage: at 0°/90° the isogyres form a cross through the melatopes; at 45° they pull apart into curved hyperbolas. That splitting on rotation - absent in a uniaxial figure - is the standard diagnostic test for telling biaxial minerals from uniaxial ones. If 2V is large, the melatopes may fall outside the field of view, as they often do at the microscope too.

Thickness: 30 µm

Stage rotation: 0°

Dispersion:

r < v

Pleochroism:

Visible

Comments:

X=Y= pale green to pink
Z= colorless to pale yellow

Chemistry of CookeiteHide

Mindat Formula:

(LiAl₄◻)[AlSi₃O₁₀](OH)₈

Element Weights:

Element	% weight
O	55.154 %
Al	25.837 %
Si	16.136 %
H	1.544 %
Li	1.329 %

Calculated from ideal end-member formula.

Elements listed:

Al, H, Li, O, Si - search for minerals with similar chemistry

Common Impurities:

Fe,Mn,Mg,Ca,Na,K

Chemical AnalysisHide

Oxide wt%:

	1	2	3	4	5	6	7	8
SiO₂	34.00 %	34.81 %	34.08 %	34.15 %	35.49 %	34.92 %	34.7 %	33.4 %
Al₂O₃	45.06 %	45.90 %	45.30 %	46.35 %	44.36 %	46.29 %	48.4 %	46.8 %
Fe₂O₃	0.45 %	0.72 %	0.19 %	0.02 %	0.12 %	0.07 %	0.1 %	1.13 %
CaO	0.04 %		0.57 %	0.16 %	0.26 %	0.30 %	0.12 %
Li₂O	4.02 %	3.59 %	3.09 %	3.18 %	2.74 %	2.67 %	2.45 %	3.15 %
Na₂O	0.19 %	0.52 %	0.07 %	0.10 %	1.12 %	0.14 %	1.01 %	0.10 %
K₂O	0.14 %				0.14 %
H₂O	14.95 %						14.1 %
F	0.46 %	0.13 %		0.35 %
H₂O+		14.87 %	14.22 %	14.06 %	13.84 %	14.12 %		14.45 %
TiO₂			0.02 %	0.02 %
MgO			1.02 %		1.32 %	0.24 %	0.05 %
H₂O-			0.38 %	0.42 %	0.55 %	0.28 %		0.50 %
B₂O₃				0.38 %				0.18 %
BeO				1.06 %
FeO					0.24 %
MnO						0.13 %
Total:	99.31 %	100.54 %	98.94 %	100.25 %	100.18 %	99.16 %	100.93 %	99.71 %

Sample references:

ID	Locality	Reference	Notes
1	Mount Rubellite Quarries, Mount Rubellite, Hebron, Oxford County, Maine, USA	Cerny, Petr (1970) Compositional variations in cookeite. The Canadian Mineralogist, 10 (4). p.636-647.	Wet chemical analysis from Penfield 1894 from a sample found in a pegmatite cavity. The results from the analysis corresponds well with modern analyses.
2	Buckfield, Oxford County, Maine, USA	Cerny, Petr (1970) Compositional variations in cookeite. The Canadian Mineralogist, 10 (4). p.636-647.	Wet chemical analysis by Landes 1925 on cookeite from pegmatite vug, associated with quartz, minor apatite and herderite. The results from the analysis corresponds well with modern analyses.
3	Dobrá Voda, Žďár nad Sázavou District, Vysočina Region, Czech Republic	Cerny, Petr (1970) Compositional variations in cookeite. The Canadian Mineralogist, 10 (4). p.636-647.	Wet chemical analyses, with contamination less than 1%. Sample from cavity lining in pegmatite associated with quartz, apatite, tourmaline and cassiterite
4	Muiâne pegmatite, Muiane-Naipa group, Gilé District, Zambezia Province, Mozambique	Cerny, Petr (1970) Compositional variations in cookeite. The Canadian Mineralogist, 10 (4). p.636-647.	Wet chemical analysis from Sahama et al., 1968. Sample from cavity lining in pegmatite with quartz. No admixtures in the analysed material.
5	Lipovka Mine, Lipovsk pegmatite field, Rezhevsky District, Sverdlovsk Oblast, Russia	Cerny, Petr (1970) Compositional variations in cookeite. The Canadian Mineralogist, 10 (4). p.636-647.	Wet chemical analysis from Ginzburg (1953). Sample form pegmatite.
6	Manono-Kitotolo mine, Tanganyika, DR Congo	Cerny, Petr (1970) Compositional variations in cookeite. The Canadian Mineralogist, 10 (4). p.636-647.	Wet chemical analysis from Herman et al. (1961) from pegmatite.
7	North Little Rock, Pulaski County, Arkansas, USA	Cerny, Petr (1970) Compositional variations in cookeite. The Canadian Mineralogist, 10 (4). p.636-647.	Averaged values from a series of wet chemical analyses from Miser and Milton (1964). Samples from a pegmatite.
8	Alto Ligonha Pegmatite Field, Zambezia Province, Mozambique	Freitas Tavares, A. (1973) Alteração em cookeite de alguns silicatos de Zambézia (Moçambique) [Alteration to cookeite of some silicates from Zambézia (Mozambique)], in Série B (Ciénas Geográficas e Geológicas). Memórias do Instituto de Investigação Científica de Moçambique , 9. 131-143

Crystallography of CookeiteHide

Polytype:

Formula:

Crystal System:

Class (H-M)

Space Group:

Space Group Setting:

Cell Parameters:

Ratio:

Unit Cell Volume (calc):

Comment:

Cookeite-1A	Cookeite-2M
(LiAl₄◻)[AlSi₃O₁₀](OH)₈	(LiAl₄◻)[AlSi₃O₁₀](OH)₈
Triclinic	Monoclinic
	2/m - Prismatic
	B2/m
	C2/m
a = 5.14 Å, b = 8.90 Å, c = 14.15 Å α = 90.5°, β = 96.2°, γ = 90.0°	a = 5.39 Å, b = 9.33 Å, c = 14.10 Å β = 97.3°
a:b:c = 0.578 : 1 : 1.59	a:b:c = 0.578 : 1 : 1.511
V 643.49 Å³ (Calculated from Unit Cell)	V 703.32 Å³ (Calculated from Unit Cell)
2	2
Space group C-1.

Crystal StructureHide

Load
Unit Cell | Unit Cell Packed
2x2x2 | 3x3x3 | 4x4x4

View
CIF File Best | x | y | z | a | b | c

Rotation
Stop | Start

Labels
Console Off | On | Grey | Yellow

Data courtesy of the American Mineralogist Crystal Structure Database. Click on an AMCSD ID to view structure

ID	Species	Reference	Link	Year	Locality	Pressure (GPa)	Temp (K)
0001949	Cookeite	Zheng H, Bailey S W (1997) Refinement of the cookeite "r" structure American Mineralogist 82 1007-1013		1997		0	293

CIF Raw Data - click here to close

data_global
_chemical_name_mineral 'Cookeite'
loop_
_publ_author_name
'Zheng H'
'Bailey S W'
_journal_name_full 'American Mineralogist'
_journal_volume 82 
_journal_year 1997
_journal_page_first 1007
_journal_page_last 1013
_publ_section_title
;
 Refinement of the cookeite "r" structure
;
_database_code_amcsd 0001949
_chemical_formula_sum 'Al4.99 Li.86 Si3.04 H8 O18'
_cell_length_a 5.158
_cell_length_b 8.940
_cell_length_c 28.498
_cell_angle_alpha 90
_cell_angle_beta 96.6
_cell_angle_gamma 90
_cell_volume 1305.406
_exptl_crystal_density_diffrn      2.656
_symmetry_space_group_name_H-M 'C 1 c 1'
loop_
_space_group_symop_operation_xyz
  'x,y,z'
  '1/2+x,1/2+y,z'
  'x,-y,1/2+z'
  '1/2+x,1/2-y,1/2+z'
loop_
_atom_site_label
_atom_site_fract_x
_atom_site_fract_y
_atom_site_fract_z
_atom_site_occupancy
Al1   0.49160   0.50040   0.00010   1.00000
Al2   0.48960   0.83680   0.00000   1.00000
Al3   0.50170  -0.00510   0.25020   0.91000
Li3   0.50170  -0.00510   0.25020   0.09000
Al4   0.50230   0.32430   0.25020   0.91000
Li4   0.50230   0.32430   0.25020   0.09000
Li   0.50050   0.66810   0.25090   0.68000
Al   0.50050   0.66810   0.25090   0.21000
Si1   0.38850  -0.01140   0.09590   0.85000
Al1   0.38850  -0.01140   0.09590   0.15000
Si2   0.40010   0.65700   0.09560   0.85000
Al2   0.40010   0.65700   0.09560   0.15000
Si3   0.58680   0.32820   0.40480   0.85000
Al3   0.58680   0.32820   0.40480   0.15000
Si4   0.59540   0.65800   0.40410   0.49000
Al4   0.59540   0.65800   0.40410   0.51000
H1   0.38650   0.31740   0.06750   1.00000
H2   0.53540  -0.00150   0.43550   1.00000
H3   0.13050  -0.01080   0.18160   1.00000
H4   0.13980   0.33830   0.17870   1.00000
H5   0.10560   0.65780   0.18100   1.00000
H6   0.37760   0.18390   0.31980   1.00000
H7   0.37610   0.48850   0.31860   1.00000
H8   0.36610   0.83870   0.32200   1.00000
O1   0.11270   0.61580   0.11300   1.00000
O2   0.48180   0.82340   0.11840   1.00000
O3   0.62770   0.54170   0.12030   1.00000
O4   0.32030  -0.02610   0.03810   1.00000
O5   0.40500   0.66840   0.03780   1.00000
O6   0.36490   0.20950   0.37990   1.00000
O7   0.51120   0.49100   0.37910   1.00000
O8   0.86320   0.28220   0.38390   1.00000
O9   0.58400   0.33190   0.46310   1.00000
O10   0.65550   0.64240   0.46310   1.00000
O-h1   0.32430   0.35860   0.03730   1.00000
O-h2   0.65670   0.01970   0.46280   1.00000
O-h3   0.15280  -0.01500   0.21570   1.00000
O-h4   0.16040   0.34290   0.21420   1.00000
O-h5   0.12300   0.65950   0.21380   1.00000
O-h6   0.38200   0.15940   0.28680   1.00000
O-h7   0.34970   0.48270   0.28490   1.00000
O-h8   0.34090   0.84520   0.28720   1.00000
loop_
_atom_site_aniso_label
_atom_site_aniso_U_11
_atom_site_aniso_U_22
_atom_site_aniso_U_33
_atom_site_aniso_U_12
_atom_site_aniso_U_13
_atom_site_aniso_U_23
Al1 0.00240 0.00290 0.00960 -0.00030 0.00150 0.00050
Al2 0.01460 0.01440 0.01750 0.00020 0.00220 -0.00020
Al3 0.01650 0.01650 0.01860 0.00000 0.00220 0.00000
Li3 0.01650 0.01650 0.01860 0.00000 0.00220 0.00000
Al4 0.01070 0.01050 0.01390 0.00030 0.00200 0.00000
Li4 0.01070 0.01050 0.01390 0.00030 0.00200 0.00000
Li 0.00700 0.00690 0.00690 -0.00010 0.00070 0.00000
Al 0.00700 0.00690 0.00690 -0.00010 0.00070 0.00000
Si1 0.01390 0.01420 0.01840 -0.00020 0.00260 -0.00020
Al1 0.01390 0.01420 0.01840 -0.00020 0.00260 -0.00020
Si2 0.01020 0.01000 0.01520 -0.00090 0.00230 -0.00010
Al2 0.01020 0.01000 0.01520 -0.00090 0.00230 -0.00010
Si3 0.02930 0.02930 0.03110 0.00060 0.00370 -0.00040
Al3 0.02930 0.02930 0.03110 0.00060 0.00370 -0.00040
Si4 0.00210 0.00240 0.00980 0.00050 0.00210 0.00000
Al4 0.00210 0.00240 0.00980 0.00050 0.00210 0.00000
O1 0.03710 0.03720 0.03750 0.00010 0.00450 -0.00010
O2 0.02200 0.02210 0.02260 0.00000 0.00260 0.00070
O3 0.02320 0.02330 0.02380 0.00000 0.00290 0.00010
O4 0.01730 0.01750 0.01820 -0.00010 0.00220 0.00000
O5 0.02200 0.02220 0.02270 0.00000 0.00270 0.00000
O6 0.02270 0.02300 0.02340 0.00000 0.00280 -0.00010
O7 0.02830 0.02830 0.02890 0.00000 0.00320 0.00010
O8 0.02610 0.02640 0.02690 0.00000 0.00330 0.00000
O9 0.00330 0.00390 0.00510 0.00030 0.00100 0.00010
O10 0.00970 0.00970 0.01060 -0.00010 0.00150 0.00020
O-h1 0.00740 0.00690 0.00830 0.00020 0.00100 -0.00010
O-h2 0.00540 0.00550 0.00650 -0.00030 0.00110 0.00000
O-h3 0.02040 0.02040 0.02060 -0.00020 0.00220 0.00000
O-h4 0.00820 0.00840 0.00900 0.00010 0.00090 0.00000
O-h5 0.00890 0.00850 0.00920 0.00010 0.00130 -0.00010
O-h6 0.01640 0.01640 0.01690 -0.00010 0.00210 -0.00010
O-h7 0.03450 0.03460 0.03470 0.00010 0.00410 0.00000
O-h8 0.02830 0.02820 0.02850 0.00000 0.00330 0.00010

X-Ray Powder DiffractionHide

Powder Diffraction Data:

d-spacing	Intensity
14.1 Å	(40)
7.05 Å	(30)
4.71 Å	(100)
4.45 Å	(30)
3.53 Å	(60)
2.51 Å	(40)
2.32 Å	(60)
1.96 Å	(35)

Comments:

38-416; known in several polytypes.

Geological EnvironmentHide

Paragenetic Mode(s):

Paragenetic Mode	Earliest Age (Ga)
Near-surface Processes
23 : Subaerial aqueous alteration by non-redox-sensitive fluids (see also #47)
Stage 4b: Highly evolved igneous rocks	>3.0
34 : Complex granite pegmatites

Geological Setting:

Late stage hydrothermal alteration product in pegmatites, hydrothermal veins.

Type Occurrence of CookeiteHide

Co-Type Localities:

ⓘ Mount Rubellite Quarries, Mount Rubellite, Hebron, Oxford County, Maine, USA
ⓘ Mount Mica Quarry, Paris, Oxford County, Maine, USA

General Appearance of Type Material:

Pearly and micaceous, somewhat resembling nacrite. In hemispherical aggregations or more rarely in distinct six-sided prisms, that are bent into a vermicular form like some varieties of chlorite.

Place of Conservation of Type Material:

Yale University, New Haven, Connecticut, USA, 2.3728.

Geological Setting of Type Material:

Late stage mineralization in granite pegmatites, also in veins, or hydrothermally altered sedimentary rocks.

Associated Minerals at Type Locality:

'Polylithionite-Trilithionite Series'

'Rubellite'

Reference:

Brush, G.J. (1866) On cookeite, a new mineral species. American Journal Of Science, 91. p.246-248.

Synonyms of CookeiteHide

Cookeite (of Brush)

Other Language Names for CookeiteHide

Dutch:Cookeiet

German:Cookeit

Russian:Кукеит

Simplified Chinese:细鳞云母

Spanish:Cookeita

Relationship of Cookeite to other SpeciesHide

Member of:

Chlorite Group

Other Members of Chlorite Group:

Baileychlore	Zn₅Al(AlSi₃O₁₀)(OH)₈	Tric. 1
Borocookeite	(LiAl₄◻)[BSi₃O₁₀](OH)₈	Mon. m : Bb
Chamosite	Fe²⁺₅Al(AlSi₃O₁₀)(OH)₈	Mon. 2/m : B2/m
Clinochlore	Mg₅Al(AlSi₃O₁₀)(OH)₈	Mon. 2/m : B2/m
Donbassite	Al_4.33(AlSi₃O₁₀)(OH)₈	Mon. 2 : B2
Franklinfurnaceite	Ca₂Fe³⁺Mn²⁺₃Mn³⁺(Zn₂Si₂O₁₀)(OH)₈	Mon. 2 : B2
Glagolevite	Na(Mg,Al)₆(AlSi₃O₁₀)(OH,O)₈	Tric. 1 : P1
Gonyerite	Mn²⁺₅Fe³⁺(Fe³⁺Si₃O₁₀)(OH)₈	Orth.
Nimite	Ni₅Al(AlSi₃O₁₀)(OH)₈	Mon. 2/m : B2/m
Pennantite	Mn²⁺₅Al(AlSi₃O₁₀)(OH)₈	Tric.
Sudoite	Mg₂Al₃(AlSi₃O₁₀)(OH)₈	Mon. 2/m : B2/m
Vakhrushevaite	Mg₅Cr(AlSi₃O₁₀)(OH)₈	Tric. 1

Common AssociatesHide

Associations Based on Photo Data:

327 photos of Cookeite associated with Quartz	SiO₂
189 photos of Cookeite associated with Elbaite	Na(Li_1.5Al_1.5)Al₆(Si₆O₁₈)(BO₃)₃(OH)₃(OH)
90 photos of Cookeite associated with Albite	Na(AlSi₃O₈)
89 photos of Cookeite associated with Lepidolite
67 photos of Cookeite associated with 'Cleavelandite'	Na(AlSi₃O₈)
53 photos of Cookeite associated with Fluorapatite	Ca₅(PO₄)₃F
35 photos of Cookeite associated with Microcline	K(AlSi₃O₈)
33 photos of Cookeite associated with Tourmaline	AD₃G₆(T₆O₁₈)(BO₃)₃X₃Z
29 photos of Cookeite associated with Hydroxylherderite	CaBe(PO₄)(OH)
28 photos of Cookeite associated with 'Schernikite'	KAl₂(AlSi₃O₁₀)(OH)₂

Related Minerals - Strunz-mindat Grouping Hide

9.EC.	Meifuite	KFe₆(Si₇Al)O₁₉(OH)₄Cl₂	Tric. 1 : P1
9.EC.	Balestraite	KLi₂V⁵⁺Si₄O₁₂	Mon. 2 : B2
9.EC.05	Talc	Mg₃Si₄O₁₀(OH)₂	Tric. 1 : P1
9.EC.05	Minnesotaite	Fe²⁺₃Si₄O₁₀(OH)₂	Tric. 1 : P1
9.EC.05	Willemseite	Ni₃Si₄O₁₀(OH)₂	Mon.
9.EC.9.EC.	Voloshinite	Rb(LiAl_1.5◻_0.5)(Al_0.5Si_3.5)O₁₀F₂	Mon. 2/m : B2/b
9.EC.10	Fluorluanshiweiite	KLiAl_1.5(Si_3.5Al_0.5)O₁₀F₂	Mon. 2/m : B2/m
9.EC.10	Garmite	CsLiMg₂(Si₄O₁₀)F₂	Mon.
9.EC.10	Gorbunovite	CsLi₂(Ti,Fe)Si₄O₁₀(F,OH,O)₂	Mon.
9.EC.10	Ferripyrophyllite	Fe³⁺Si₂O₅(OH)	Mon. 2/m
9.EC.10	Manganiceladonite	K(MgMn³⁺◻)(Si₄O₁₀)(OH)₂	Mon.
9.EC.10	Luanshiweiite	KLiAl_1.5(Si_3.5Al_0.5)O₁₀(OH)₂	Mon. 2/m : B2/b
9.EC.10	Pyrophyllite	Al₂Si₄O₁₀(OH)₂	Tric. 1
9.EC.15	Paragonite	NaAl₂(AlSi₃O₁₀)(OH)₂	Mon.
9.EC.15	Ferroaluminoceladonite	K(Fe²⁺Al◻)(Si₄O₁₀)(OH)₂	Mon. 2/m : B2/m
9.EC.15	Nanpingite	CsAl₂(AlSi₃O₁₀)(OH,F)₂	Mon. 2/m : B2/b
9.EC.15	Ferroceladonite	K(Fe²⁺Fe³⁺◻)(Si₄O₁₀)(OH)₂	Mon. 2/m : B2/m
9.EC.15	Ganterite	Ba_0.5(Na,K)_0.5Al₂(Si_2.5Al_1.5)O₁₀(OH)₂	Mon. 2/m : B2/b
9.EC.15	Kreiterite	CsLi₂Fe³⁺(Si₄O₁₀)F₂	Mon.
9.EC.15	Roscoelite	KV³⁺₂(AlSi₃O₁₀)(OH)₂	Mon. 2/m : B2/b
9.EC.15	Aluminoceladonite	K(MgAl◻)(Si₄O₁₀)(OH)₂	Mon. 2/m : B2/m
9.EC.15	Tobelite	(NH₄)Al₂(AlSi₃O₁₀)(OH)₂	Mon. 2/m : B2/m
9.EC.15	Tainiolite	KLiMg₂(Si₄O₁₀)F₂	Mon. 2/m : B2/m
9.EC.15	Celadonite	K(MgFe³⁺◻)(Si₄O₁₀)(OH)₂	Mon. 2/m : B2/m
9.EC.15	Chromceladonite	K(MgCr◻)(Si₄O₁₀)(OH)₂	Mon. 2 : B2
9.EC.15	Montdorite	KFe²⁺_1.5Mn²⁺_0.5Mg_0.5Si₄O₁₀(F,OH)₂	Mon. 2/m : B2/m
9.EC.15	Chromphyllite	KCr₂(AlSi₃O₁₀)(OH)₂	Mon. 2/m : B2/b
9.EC.15	Boromuscovite	KAl₂(BSi₃O₁₀)(OH)₂	Mon. 2/m
9.EC.15	'UM1988-22-SiO:AlCaFFeHKLiMg'	KLiMgAl₂Si₃O₁₀F₂	Mon.
9.EC.15	Chernykhite	(Ba,Na)(V³⁺,Al,Mg)₂((Si,Al)₄O₁₀)(OH)₂	Mon.
9.EC.15	Muscovite	KAl₂(AlSi₃O₁₀)(OH)₂	Mon. 2/m : B2/b
9.EC.20	Masutomilite	K(LiAlMn²⁺)[AlSi₃O₁₀]F₂	Mon. 2 : B2
9.EC.20	Oxyphlogopite	K(Mg,Ti,Fe)₃[(Si,Al)₄O₁₀](O,F)₂	Mon. 2/m : B2/m
9.EC.20	'Chloroferrokinoshitalite'	(Ba,K)(Fe²⁺,Mg)₃(Al₂Si₂O₁₀)(Cl,OH,F)₂
9.EC.20	Siderophyllite	KFe²⁺₂Al(Al₂Si₂O₁₀)(OH)₂	Mon.
9.EC.20	Sokolovaite	CsLi₂Al(Si₄O₁₀)F₂	Mon.
9.EC.20	Hendricksite	KZn₃(Si₃Al)O₁₀(OH)₂	Mon. 2/m : B2/m
9.EC.20	Tetraferriphlogopite	KMg₃(Si₃Fe³⁺)O₁₀(OH)₂	Mon. 2/m : B2/m
9.EC.20	Fluorannite	KFe²⁺₃(Si₃Al)O₁₀F₂	Mon. 2/m : B2/m
9.EC.20	Aspidolite	NaMg₃(AlSi₃O₁₀)(OH)₂	Mon. 2/m : B2/m
9.EC.20	Suhailite	(NH₄)Fe²⁺₃(AlSi₃O₁₀)(OH)₂	Mon. 2/m : B2/m
9.EC.20	Ephesite	NaLiAl₂(Al₂Si₂O₁₀)(OH)₂	Tric. 1 : P1
9.EC.20	Norrishite	KLiMn³⁺₂(Si₄O₁₀)O₂	Mon. 2/m : B2/m
9.EC.20	Phlogopite	KMg₃(AlSi₃O₁₀)(OH)₂	Mon. 2/m : B2/m
9.EC.20	Yangzhumingite	KMg_2.5(Si₄O₁₀)F₂	Mon. 2/m : B2/m
9.EC.20	Orlovite	KLi₂Ti(Si₄O₁₀)OF	Mon. 2 : B2
9.EC.20	Tetraferriannite	KFe²⁺₃(Si₃Fe³⁺)O₁₀(OH)₂	Mon. 2/m : B2/m
9.EC.20	Shirokshinite	K(NaMg₂)(Si₄O₁₀)F₂	Mon. 2/m : B2/m
9.EC.20	Trilithionite	K(Li_1.5Al_1.5)(AlSi₃O₁₀)(F,OH)₂	Mon. 2/m : B2/b
9.EC.20	Polylithionite	KLi₂Al(Si₄O₁₀)(F,OH)₂	Mon. 2/m : B2/b
9.EC.20	Shirozulite	KMn²⁺₃(Si₃Al)O₁₀(OH)₂	Mon. 2/m : B2/m
9.EC.20	Preiswerkite	NaMg₂Al(Al₂Si₂O₁₀)(OH)₂	Mon. 2/m : B2/b
9.EC.20	Fluorophlogopite	KMg₃(Si₃Al)O₁₀F₂	Mon. 2/m : B2/m
9.EC.20	Wonesite	(Na,K,◻)(Mg,Fe,Al)₆(Si,Al)₈O₂₀(OH,F)₄	Mon. 2/m : B2/m
9.EC.20	'UM2004-49-SiO:AlCsFHKLi'	(Cs,K)(Al,Li)_2.6((Si,Al)₄O₁₀)(F,OH)₂
9.EC.20	Fluorotetraferriphlogopite	KMg₃(Fe³⁺Si₃O₁₀)F₂	Mon. 2/m : B2/m
9.EC.20	Annite	KFe²⁺₃(AlSi₃O₁₀)(OH)₂	Mon. 2/m : B2/m
9.EC.20	Eastonite	KMg₂Al(Al₂Si₂O₁₀)(OH)₂	Mon.
9.EC.22	'Pimelite'	Ni₃Si₄O₁₀(OH)₂ · 4H₂O	Hex.
9.EC.30	Margarite	CaAl₂(Al₂Si₂O₁₀)(OH)₂	Mon. 2/m : B2/b
9.EC.35	Kinoshitalite	(Ba,K)(Mg,Mn²⁺,Al)₃(Al₂Si₂O₁₀)(OH)₂	Mon. 2/m : B2/m
9.EC.35	Ferrokinoshitalite	(Ba,K)(Fe²⁺,Mg)₃(Al₂Si₂O₁₀)(OH,F)₂	Mon. 2/m : B2/m
9.EC.35	Clintonite	CaAlMg₂(SiAl₃O₁₀)(OH)₂	Mon. 2/m : B2/m
9.EC.35	Oxykinoshitalite	(Ba,K)(Mg,Ti,Fe³⁺,Fe²⁺)₃((Si,Al)₄O₁₀)(O,OH,F)₂	Mon. 2/m : B2/m
9.EC.35	Fluorokinoshitalite	BaMg₃(Al₂Si₂O₁₀)F₂	Mon. 2/m : B2/m
9.EC.35	Bityite	CaLiAl₂(AlBeSi₂O₁₀)(OH)₂	Mon. 2/m : B2/b
9.EC.35	Anandite	(Ba,K)(Fe²⁺,Mg)₃((Si,Al,Fe)₄O₁₀)(S,OH)₂	Mon. 2/m : B2/b
9.EC.40	Montmorillonite	(Na,Ca)_0.33(Al,Mg)₂(Si₄O₁₀)(OH)₂ · nH₂O	Mon. 2/m : B2/m
9.EC.40	Beidellite	(Na,Ca_0.5)_0.3Al₂((Si,Al)₄O₁₀)(OH)₂ · nH₂O	Mon. 2/m : B2/m
9.EC.40	Volkonskoite	Ca_0.3(Cr,Mg,Fe)₂((Si,Al)₄O₁₀)(OH)₂ · 4H₂O	Mon.
9.EC.40	Nontronite	Na_0.3Fe₂((Si,Al)₄O₁₀)(OH)₂ · nH₂O	Mon. 2/m : B2/m
9.EC.40	Kurumsakite	(Zn,Ni,Cu)₈Al₈V⁵⁺₂Si₅O₃₅ · 27H₂O (?)	Orth.
9.EC.40	Yakhontovite	(Ca,Na)_0.5(Cu,Fe,Mg)₂(Si₄O₁₀)(OH)₂ · 3H₂O	Mon.
9.EC.45	Swinefordite	Li(Al,Li,Mg)₃((Si,Al)₄O₁₀)₂(OH,F)₄ · nH₂O	Mon. 2/m : B2/m
9.EC.45	Hectorite	Na_0.3(Mg,Li)₃(Si₄O₁₀)(F,OH)₂	Mon. 2/m : B2/m
9.EC.45	Zincsilite	Zn₃Si₄O₁₀(OH)₂ · 4H₂O (?)	Mon.
9.EC.45	Hanjiangite	Ba₂CaV³⁺Al(H₂AlSi₃O₁₂)(CO₃)₂F	Mon. 2 : B2
9.EC.45	Spadaite	MgSiO₂(OH)₂ · H₂O (?)
9.EC.45	Ferrosaponite	Ca_0.3(Fe²⁺,Mg,Fe³⁺)₃((Si,Al)₄O₁₀)(OH)₂ · 4H₂O	Mon.
9.EC.45	Stevensite	(Ca,Na)_xMg_3-x(Si₄O₁₀)(OH)₂	Mon.
9.EC.45	Saponite	Ca_0.25(Mg,Fe)₃((Si,Al)₄O₁₀)(OH)₂ · nH₂O	Mon.
9.EC.45	Sauconite	Na_0.3Zn₃((Si,Al)₄O₁₀)(OH)₂ · 4H₂O	Mon.
9.EC.50	Vermiculite	Mg_0.7(Mg,Fe,Al)₆(Si,Al)₈O₂₀(OH)₄ · 8H₂O	Mon. 2/m
9.EC.52	'Tarasovite'	near NaKAl₁₁Si₁₃O₄₀(OH)₉ · 3H₂O
9.EC.55	Clinochlore	Mg₅Al(AlSi₃O₁₀)(OH)₈	Mon. 2/m : B2/m
9.EC.55	Borocookeite	(LiAl₄◻)[BSi₃O₁₀](OH)₈	Mon. m : Bb
9.EC.55	Franklinfurnaceite	Ca₂Fe³⁺Mn²⁺₃Mn³⁺(Zn₂Si₂O₁₀)(OH)₈	Mon. 2 : B2
9.EC.55	Pennantite	Mn²⁺₅Al(AlSi₃O₁₀)(OH)₈	Tric.
9.EC.55	Vakhrushevaite	Mg₅Cr(AlSi₃O₁₀)(OH)₈	Tric. 1
9.EC.55	Nimite	Ni₅Al(AlSi₃O₁₀)(OH)₈	Mon. 2/m : B2/m
9.EC.55	Gonyerite	Mn²⁺₅Fe³⁺(Fe³⁺Si₃O₁₀)(OH)₈	Orth.
9.EC.55	Chamosite	Fe²⁺₅Al(AlSi₃O₁₀)(OH)₈	Mon. 2/m : B2/m
9.EC.55	'Orthochamosite'	(Fe²⁺,Mg,Fe³⁺)₅Al(AlSi₃O₁₀)(OH,O)₈
9.EC.55	Baileychlore	Zn₅Al(AlSi₃O₁₀)(OH)₈	Tric. 1
9.EC.55	Sudoite	Mg₂Al₃(AlSi₃O₁₀)(OH)₈	Mon. 2/m : B2/m
9.EC.55	Glagolevite	Na(Mg,Al)₆(AlSi₃O₁₀)(OH,O)₈	Tric. 1 : P1
9.EC.55	Donbassite	Al_4.33(AlSi₃O₁₀)(OH)₈	Mon. 2 : B2
9.EC.60	Dozyite	Mg₇Al₂(Al₂Si₄O₁₅)(OH)₁₂	Mon.
9.EC.60	Rectorite	(Na,Ca)Al₄((Si,Al)₈O₂₀)(OH)₄ · 2H₂O	Mon.
9.EC.60	Corrensite	(Mg,Fe)₉((Si,Al)₈O₂₀)(OH)₁₀ · nH₂O	Orth.
9.EC.60	Aliettite	Ca_0.2Mg₆((Si,Al)₈O₂₀)(OH)₄ · 4H₂O	Mon.
9.EC.60	Karpinskite	(Ni,Mg)₂Si₂O₅(OH)₂ (?)	Mon.
9.EC.60	Lunijianlaite	Li_0.7Al_6.2(AlSi₇O₂₀)(OH,O)₁₀	Mon.
9.EC.60	Tosudite	Na_0.5(Al,Mg)₆((Si,Al)₈O₁₈)(OH)₁₂ · 5H₂O	Mon. 2 : B2
9.EC.60	Hydrobiotite	K(Mg,Fe²⁺)₆((Si,Al)₈O₂₀)(OH)₄ · nH₂O	Mon. 2/m : B2/m
9.EC.60	Saliotite	(Li,Na)Al₃(AlSi₃O₁₀)(OH)₅	Mon. 2/m : B2/m
9.EC.60	Kulkeite	Mg₈Al(AlSi₇O₂₀)(OH)₁₀	Mon.
9.EC.60	Brinrobertsite	Na_0.3Al₄(Si₄O₁₀)₂(OH)₄ · 3.5 H₂O	Mon.
9.EC.65	Macaulayite	(Fe,Al)₂₄Si₄O₄₃(OH)₂	Mon.
9.EC.70	Burckhardtite	Pb₂(Fe³⁺Te⁶⁺)[AlSi₃O₈]O₆	Trig. 3m(32/m) : P31m
9.EC.75	Niksergievite	(Ba,Ca)₂Al₃(AlSi₃O₁₀)(CO₃)(OH)₆ · nH₂O	Mon.
9.EC.75	Ferrisurite	(Pb,Ca)_2.4Fe³⁺₂(Si₄O₁₀)(CO₃)_1.7(OH)₃ · nH₂O	Mon.
9.EC.75	Surite	(Pb,Ca)₃(Al,Fe²⁺,Mg)₂((Si,Al)₄O₁₀)(CO₃)₂(OH)₂	Mon. 2 : P2₁
9.EC.80	Kegelite	Pb₈Al₄(Si₈O₂₀)(SO₄)₂(CO₃)₄(OH)₈	Mon.

Fluorescence of CookeiteHide

In UV light:

May fluoresce creamy yellow SW

Other InformationHide

Health Risks:

No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.

Internet Links for CookeiteHide

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https://www.mindat.org/min-1121.html
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Raman and XRD data at RRUFF project

References and PDF downloads at RRUFF project

American Mineralogist Crystal Structure Database

Handbook of Mineralogy page PDF

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References for CookeiteHide

Reference List:

Brush, G.J. (1866) On cookeite, a new mineral species. American Journal Of Science, 91. p.246-248.

Sahama, Th.G., Knorring, Oleg v., Lehtinen, Martti (1968) Cookeite from the Muiane pegmatite, Zambezia, Mozambique. Lithos, 1 (1) 12-19 doi:10.1016/s0024-4937(68)80031-3

Cerny, Petr (1970) Compositional variations in cookeite. The Canadian Mineralogist, 10 (4). p.636-647.

Černý, P, Povondra, P, Staněk, J (1971) Two cookeites from Czechoslovakia: A boron-rich variety and a IIb polytype. Lithos, 4 (1) 7-15 doi:10.1016/0024-4937(71)90111-3

Flehmig, W.; Menschel, G. (1972) Über die Lithiumgehalte und das Auftreten von Cookeit (Lithiumchlorit) in permischen Sandsteinen von Nordhessen. Contributions to Mineralogy and Petrology, 34 (3). 211-223 doi:10.1007/bf00373293

Goffé, Bruno (1977) Présence de cookéite dans les bauxites métamorphiques du Dogger de la Vanoise (Savoie). Bulletin de Minéralogie, 100 (5). 254-257 doi:10.3406/bulmi.1977.7145

Ren, Shuang K.; Eggleton, Richard A.; Walshe, John L. (1988) The formation of hydrothermal cookeite in the breccia pipes of the Ardlethan tin field, New South Wales, Australia. The Canadian Mineralogist, 26 (2). p.407-412.

Goffé, Bruno, Azañon, Jοsé Miguel, Bouybaouene, Mοhamed Larbi, Jullien, Michel (1996) Metamorphic cookeite in Alpine metapelites from Rif, northern Morocco, and the Betic Chain, southern Spain. European Journal of Mineralogy, 8 (2) 335-348 doi:10.1127/ejm/8/2/0335

Zheng, Hong, Bailey, Sturges W. (1997) Refinement of the cookeite "r" structure. American Mineralogist, 82 (9) 1007-1013 doi:10.2138/am-1997-9-1017

(2001) Cookeite. Handbook of Mineralogy. Mineralogical Society of America

Mata, M. Pilar, Peacor, Donald R., López-Aguayo, Francisco (2004) Polytypism of cookeite in low-grade metapelites of the Cameros Basin, Spain: Lack of correlation of well-ordered polytypes with pressure. American Mineralogist, 89 (10) 1510-1515 doi:10.2138/am-2004-1020

Novák, Milan, Čopjaková, Renata, Dosbaba, Marek, Galiová, Michaela VAŠINOVÁ, Všianský, Dalibor, Staněk, Josef (2015) Two Paragenetic Types of Cookeite From the Dolní Bory-Hatě Pegmatites, Moldanubian Zone, Czech Republic: Proximal and Distal Alteration Products of Li-Bearing Sekaninaite. The Canadian Mineralogist, 53 (6) 1035-1048 doi:10.3749/canmin.1400090

Ding, Xin, Li, Jiankang, Chou, I-Ming, Chen, Zhenyu, Li, Shenghu (2020) Raman spectroscopic identification of cookeite in the crystal-rich inclusions in spodumene from the Jiajika lithium pegmatite deposit, China, and its geological implications. European Journal of Mineralogy, 32 (1) 67-75 doi:10.5194/ejm-32-67-2020

Localities for CookeiteHide

Showing 262 localities.

This map shows a selection of localities that have latitude and longitude coordinates recorded. Click on the

symbol to view information about a locality. The

symbol next to localities in the list can be used to jump to that position on the map.

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Locality ListHide

- This locality has map coordinates listed.

- This locality has estimated coordinates. ⓘ - Click for references and further information on this occurrence. ? - Indicates mineral may be doubtful at this locality.

- Good crystals or important locality for species.

- World class for species or very significant. (TL) - Type Locality for a valid mineral species. (FRL) - First Recorded Locality for everything else (eg varieties). ~~Struck out~~ - Mineral was erroneously reported from this locality. Faded * - Never found at this locality but inferred to have existed at some point in the past (e.g. from pseudomorphs).

All localities listed without proper references should be considered as questionable.


Afghanistan
ⓘ Laghman

Argentina
San Luis Province Chacabuco Department Sierra de la Estanzuela ⓘ La Viquita pegmatite	Galliski et al. (1999)
ⓘ San Elías mine	minsocam.org (2003)

Australia
New South Wales Auckland Co. Pambula ⓘ Back Creek deposit	Loughnan et al. (1976)
Bourke Co. Ardlethan Ardlethan mineral field Ardlethan Tin Mines ⓘ Carpathia Mine	...
ⓘ White Crystal Mine	Ren et al. (1995)
Victoria ⓘ Dorchap Dyke Swarm	Ryan Eagle et al. (2018)
Western Australia Coolgardie Shire Nepean ⓘ Lepidolite Hill pegmatite	Jacobson et al. (2007)
ⓘ Londonderry Li deposit
Dundas Shire Norseman ⓘ Sinclair Caesium Deposit	Crook et al. (2019)
Ravensthorpe Shire Ravensthorpe ⓘ Mount Cattlin Mine	B. Grguric

Austria
Salzburg Zell am See District Rauris Wörth Vorsterbach valley ⓘ Flatscher Alp	Niedermayr et al. (1992) +1 other reference

Belgium
Wallonia Hainaut Montigny-le-Tilleul ⓘ Landelies	Anceau (1996) +1 other reference
Liège Olne ⓘ Bay-Bonnet quarry	Anceau (1996) +1 other reference
Luxembourg Vielsalm ⓘ Salmchâteau	Blondieau et al. (2017)

Bolivia
Potosí Antonio Quijarro Province Tomave Municipality Caracota district ⓘ Caracota Mine (Santa Teresita Mine)	Shimada et al. (1985)
Rafael Bustillo Province Llallagua ⓘ Siglo Veinte Mine	Petrov et al. (2006)

Brazil
Minas Gerais ⓘ Araçuaí ?	BHounds
Conselheiro Pena Barra do Cuieté ⓘ Urucum claim	Atencio et al. (2004)
ⓘ Conselheiro Pena pegmatite district	- (n.d.)
Divino das Laranjeiras Linópolis ⓘ Jaime Pacheco claim	Menezes (n.d.)
Governador Valadares Golconda mining district ⓘ Alto da Golconda mine	Acquired with owner of mine.
ⓘ Faria claim	Menezes (n.d.)
ⓘ Golconda pegmatite field	Pecora et al. (1950)
Itinga Taquaral Piauí valley ⓘ Cachoeira mine	Dias et al. (2015)
ⓘ Teixerinha mine	Russ Rizzo specimens
São José da Safira ⓘ Chiá mine	Russ Rizzo Collection via Luiz Menezes
ⓘ Cruzeiro mine
Rio Grande do Norte Equador ⓘ Alto do Giz pegmatite	Fernandes et al. (2022)
Parelhas ⓘ Alto dos Quintos Mine	www.sbgeo.org.br (2002) +2 other references
ⓘ Capoeira 1 pegmatite (Boqueirãozinho pegmatite)	de Brito Barreto et al. (2010)
ⓘ Capoeira 2 pegmatite (Mulungu pegmatite)	de Brito Barreto et al. (2010)

Canada
British Columbia Golden Mining Division ⓘ Bugaboo Castles	Canadian Museum of Nature collection +1 other reference
Donald ⓘ Waitabit Creek Cookeite Occurrence	Peatfield (n.d.)
Manitoba Lac-du-Bonnet area Bernic Lake ⓘ Tanco Mine	153-155. +5 other references
Red Cross Lake ⓘ Red Cross Lake pegmatites	Cerny et al. 2012 +1 other reference
Nova Scotia Yarmouth Co. ⓘ Brazil Lake pegmatite	Hughes (1995)
Ontario Frontenac County Bedford Township ⓘ Richardson Feldspar Mine	Traill (1983)
Kenora District ⓘ Separation Rapids Lithium Project (Separation Lake area)	Avalon Advanced Materials Inc.

Chile
O'Higgins Cachapoal Province Rancagua El Teniente ⓘ La Huifa deposit	Piquer et al. (2023)

China
Guangxi Guilin Yangshuo Co. ⓘ Puyi	Zhang et al. (2026)
Nanning Shanglin County Xian’an Coalfield ⓘ Wanfu mine	Zhang et al. (2024)
ⓘ Guizhou	Gaokui Liu and Wenshi Peng (1987)
Guiyang Kaiyang County ⓘ Maoping village	Xiao et al. (2025)
Liupanshui Liuzhi District ⓘ Pingqiao F-Li deposit	Zou et al. (2022)
ⓘ Henan	Gaokui Liu and Wenshi Peng (1987)
Sanmenxia Lushi County Nanyangshan pegmatite field ⓘ Nanyangshan 703 deposit	Qu et al. (2020)
Mianchi County ⓘ Mianchi area	Wang et al. (2025)
Hubei ⓘ Jinyinshan Li deposit	Wang et al. (2025)
Xianning Chongyang Co. ⓘ Huangdi'nao Li deposit	Wang et al. (2025)
Hunan Chenzhou Yizhang Co. Yaogangxian W-Sn ore field ⓘ Yaogangxian Mine ?	Jensen (2009) +1 other reference
Inner Mongolia Ordos City (E'erduosi Prefecture) Jungar Banner (Zhunge'er Co.) Jungar coal field (Zhunge'er coal field) ⓘ Guanbanwusu Mine	Zhang et al. (2025)
Jiangxi Yichun Yifeng Co. ⓘ Xikeng Li deposit	Xu et al. (2024)
Yuanzhou District Yichun complex (Yashan batholith) ⓘ Yichun Mine (Mine No. 414)	Xiao'e Huang and Zhihua Xu (2005)
Liaoning Tieling Xifeng Co. ⓘ Jiangjiayan village	Xiao et al. (2025)
Qinghai Haixi Mongol and Tibetan Autonomous Prefecture Tianjun County ⓘ Chakabeishan rare-element pegmatites	Luo et al. (2026)
Shaanxi Hanzhong Zhenba County ⓘ Heishuichi section	Qin et al. (2025)
Shanxi Jincheng ⓘ Sihe mine	Zhang et al. (2024)
Yangquan ⓘ Borehole No. 7602	Wang et al. (2025)
Yuncheng Pinglu Co. ⓘ Caochuan bauxite deposit	Zhang et al. (2022)
Sichuan Dazhou Wanyuan Co. ⓘ Tongxing coal mine	Yuzhuang Sun et al. (2010)
Garzê Autonomous Prefecture (Ganzi Autonomous Prefecture) Yajiang County Kangding pegmatite field ⓘ Jiajika Mine	Ding et al. (2020)
ⓘ No. 134 Pegmatite	Wang et al. (2021)
ⓘ Murong pegmatite-type Li deposit	Lei et al. (2025)
Ngawa Autonomous Prefecture (Aba Autonomous Prefecture) Jinchuan Co. Ke'eryin pegmatite field ⓘ Dangba deposit	Chen et al. (2026)
Yunnan Yuxi ⓘ Xiaoshiqiao	Ye et al. (2025) +1 other reference

Croatia
Sisak-Moslavina County Petrova Gora Mountains ⓘ Petrova Gora ore field ?	Šoštarić (2009)

Czech Republic
Central Bohemian Region Kutná Hora District Vlkaneč ⓘ Přibyslavice	Povondra et al. (eds.) +1 other reference
Karlovy Vary Region Sokolov District Krásno ⓘ Huber stock (Huber shaft; Hub stock)	Sejkora et al. (2006)
Vysočina Region Třebíč District ⓘ Radkovice u Hrotovic	Bull. Minéral. +1 other reference
Žďár nad Sázavou District Bory ⓘ Dolní Bory	Staněk (1991) +4 other references
ⓘ Pegmatite vein No. 1	Staněk (1997)
ⓘ Pegmatite vein No. 21	Němec D.: Ein Pegmatit mit Li-Mineralisierung von Dolní Bory in Westmahren (ČSSR)
ⓘ Pegmatite vein No. 3	Novák et al. (2008)
ⓘ Pegmatite vein Oldřich	Staněk (1997)
ⓘ Dobrá Voda	Cerny (1970) +1 other reference
Rožná ⓘ Rožná pegmatite (Rozna; Roschna)	[Lapis 1994:6 p49-50]

DR Congo
Tanganyika ⓘ Manono-Kitotolo mine	Cerny (1970)

Finland
Central Ostrobothnia Kaustinen ⓘ Leviäkangas	Geologian tutkimuskeskus et al. (ed.)
Pirkanmaa Orivesi Eräjärvi area ⓘ Maantienvarsi pegmatite	Lahti (1981)
ⓘ Viitaniemi pegmatite	Sandström et al. (2009)
South Ostrobothnia Alavus ⓘ Hunnakko	Lynch et al. (2025)
Kuortane ⓘ Kaatiala pegmatite	Lahti +1 other reference
Seinäjoki ⓘ Pajuluoma	Alviola
Peräseinäjoki ⓘ Haapaluoma pegmatite	Hytönen (1999)
ⓘ Syväjärvi	Lynch et al. (2025)
Southwest Finland Kimitoön (Kemiönsaari) Kimitoön Island ⓘ Rosendal pegmatite	Sarapää (2013)
ⓘ Lemn‪äs	Laitakari (1967)
Salo Kisko ⓘ Maantienleikkaus Li-pegmatite	Ilkka Mikkola collection
Somero ⓘ Faaraonhauta	Ilkka Mikkola collection
ⓘ Luolamäki	Teertstra et al. (1998)

France
Auvergne-Rhône-Alpes Isère Grenoble ⓘ La Mure	The présence of cookéite in ... +1 other reference
Savoie Saint-Jean-de-Maurienne Saint-Sorlin-d'Arves ⓘ Upper Arvan valley	De Ascenção Guedes et al. (2010)
Centre-Val de Loire Indre Le Blanc Chaillac ⓘ Chaillac Mines	Christophe Boutry collection
Occitanie Haute-Garonne Couledoux ⓘ Goutasson	Queneau (n.d.)
Provence-Alpes-Côte d'Azur Alpes-de-Haute-Provence Barcelonnette Saint-Pons ⓘ Riou Bourdoux ravine	Loubet (2011)
ⓘ Saint-Pons outcrops	Loubet (2011) +1 other reference
Hautes-Alpes Briançon La Grave ⓘ Le Chazelet mine	Self collected S. Maury +1 other reference
Gap Chorges ⓘ Chanteloube Bay	S. MAURY Collection
Var Draguignan Fréjus Reyran valley ⓘ Rhyolitic lava flows	MAURY (S)

Georgia
Racha-Lechkhumi and Kvemo Svaneti Ambrolauri District ⓘ Lukhumi As deposit	Zhabin et al. (1990)

Germany
Baden-Württemberg Freiburg Region Waldshut St Blasien Menzenschwand ⓘ Krunkelbach Valley Uranium deposit	Walenta (1992)

Greece
North Aegean Samos Eastern Samos ⓘ Eastern coast	Feenstra et al. (2003)

Greenland
Kujalleq ⓘ Ilímaussaq complex	Petersen et al. (1993)

India
Jammu and Kashmir Kishtwar district Pádar ⓘ Kashmir sapphire mines	Tom D. La Touche (1890)

Indian Plate
ⓘ Bastar Craton	Singh et al. (1991)

Italy
Piedmont Verbano-Cusio-Ossola Province Trontano Pizzo Marcio ⓘ Pizzo Marcio North dyke ?	Appiani et al. (1995) +2 other references
Tuscany Grosseto Province ⓘ Monte Argentario	Theye et al. (1997)
Livorno Province Campo nell'Elba San Piero in Campo ⓘ Fonte del Prete	Alessandro Genazzani collection
ⓘ Grotta d'Oggi	Orlandi P. & Pezzotta (1996)
ⓘ Rosina vein (Rosina pegmatite)	Giuliano bettini collection

Japan
Fukuoka Prefecture Fukuoka City ⓘ Nagatare (Nagatareyama; Nagatare mine)	Sakurai et al (1973) +2 other references
Oita Prefecture Bungo-Ono City ⓘ ~~Obira Mine~~	- (Name "cookeite" occasionally seen on dealer labels, but this is a misidentification of the spheroidal chlorite inclusions in quartz.)

Kazakhstan
East Kazakhstan Region Ulan District ⓘ Asubulak ore field	Oitseva et al. (2017)

Madagascar
Amoron'i Mania Ambatofinandrahana District Mandrosonoro ⓘ Sarondambo	Behier (1960)
Vakinankaratra Antsirabe II District Ibity ⓘ Pegmatite SE of Mt.Kiboy	Behier (1960)
Sahatany Valley ⓘ Ambatomalaza (Vohimasina)	Behier (1960)
ⓘ Ampatsikahitra pegmatites	Michel Arliguie collection & photo (Photo ID: 962637 , EX J. Behier specimen)
ⓘ Andrianampy	Behier (1960)
ⓘ Antsira	Ella Masciulli Collection
ⓘ Ilapa	Ranorosoa (1986)
ⓘ Soalafadahy	Knut Edvard Larsen collection # M-601
ⓘ Tompoambohitra (Tokambohitra)	Larsen (2003)
Tsarafara Pegmatites ⓘ Tsarafara Sud (Ankadilava)	Ranorosoa (1986) +2 other references

Mozambique
Zambezia Province ⓘ Alto Ligonha Pegmatite Field	Freitas Tavares (1973) +1 other reference
Alto Mólocuè District ⓘ Moneia Mine	Neves et al. (1974)
ⓘ Morro Conco mine	Neves et al. (1974)
ⓘ Namacotche LCT pegmatites	Gomes et al. (2022)
Gilé District Muiane-Naipa group ⓘ Muiâne pegmatite (Muiâne mine; Emdal mines)	Behier (1957) +2 other references
ⓘ Naipa mine	Sahama et al. (1968)
ⓘ Namivu Pegmatite (Namivo Pegmatite)	Pavel M. Kartashov (n.d.) +2 other references
Mulevala District ⓘ Morrua Mine	Wolfgang Hampel

Namibia
Erongo Region Karibib Constituency Okongava Ost Farm 72 ⓘ Rubikon Mine	Bezing et al. (2007)

Nigeria
Nasarawa ⓘ Nasarawa Egon	Akintola et al. (2008)

North Macedonia
Prilep Municipality ⓘ Vitolište	Altherr et al. (2017)

Norway
Nordland Hamarøy Drag ⓘ Store Grønnhola Quarry	Husdal (2020)
Meløy Holandsfjorden ⓘ Ågskardet LCT Pegmatite	Kristiansen (1972) +1 other reference

Poland
Lower Silesian Voivodeship Dzierżoniów County Piława Górna DSS Piława Górna Quarry ⓘ Julianna pegmatite	Pieczka et al. (2018)

Portugal
Porto Amarante Rebordelo ⓘ Vieiros Mines	Maijer 1965
Vila Real Alijó São Mamede de Ribatua ⓘ Alijó spodumene pegmatite	Garate-Olave et al. (2024)

Russia
Murmansk Oblast Northern Karelia ⓘ Alakurtti pegmatite	[World of Stones 95:5-6
Sverdlovsk Oblast Rezhevsky District Lipovsk pegmatite field ⓘ Lipovka Mine (Lipovskoe Mine; Lipovskaya Mine; Lipovaya Mine)	Cerny (1970) +1 other reference
Zabaykalsky Krai Krasnochikoysky District Krasnyi Chikoy Malkhan pegmatite field ⓘ Mokhovaya pegmatite vein	Grant (2001) +1 other reference
ⓘ Sosedka pegmatite vein	Zagorsky et al. (2003) +2 other references

Rwanda
Eastern Province Rwamagana District ⓘ Musha-Ntunga	J. Acke et al. (2023) +1 other reference

South Africa
Limpopo Waterberg District Municipality Mogalakwena Local Municipality Mokopane ⓘ Zaaiplaats tin field	Cairncross et al. (1995)

Spain
Andalusia Almería Adra ⓘ Metapelite outcrops	B. Goffé et al. (1996)
Tabernas ⓘ Schist outcrops	Goffé +3 other references
Granada Otívar ⓘ Schist outcrops	Azañón et al. (1997)
Salobreña occurrence ⓘ Metapelite outcrops	Goffé +3 other references
ⓘ Schist outcrops	Azañón et al. (1997)
Canary Islands Santa Cruz de Tenerife Province Tenerife ⓘ ~~Alcala~~	Dill et al. (2023)
Candelaria Barranco Hondo ⓘ ~~Lava flow~~	Dill et al. (2023)
Granadilla de Abona ⓘ ~~La Mareta~~	Dill et al. (2023)
ⓘ ~~Playa de Enramada~~	Dill et al. (2023)
Castile and Leon ⓘ Fregeneda–Almendra pegmatite field	Errandonea-Martin et al. (2022)
Zamora Villar del Buey Pinilla de Fermoselle ⓘ Teso de la Calera pegmatite (Pinilla de Fermoselle pegmatite; Pinilla pegmatite)	Roda (2005)
Community of Madrid ⓘ Bustarviejo ?
La Rioja Muro de Aguas ⓘ Ambas Aguas	García (2003)
Navajún ⓘ Ampliación a Victoria Mine	Mata et al. (1991)

Sweden
Gävleborg County Gävle Bergby ⓘ Bergby pegmatite	- (n.d.)
Stockholm County Haninge Utö ⓘ Utö Mines	Langhof et al. (1998) +1 other reference
Västerbotten County Skellefteå ⓘ Varuträsk	Sandström (2008)
Västernorrland County Örnsköldsvik Sidensjö ⓘ Orrvik	Lynch et al. (2025)

Switzerland
Grisons Surselva Region Lumnezia Vrin ⓘ Ramosa Alp	Stalder et al. (1998)
Viamala Region Muntogna da Schons Mathon ⓘ Wergenstein	Stalder et al. (1998)
Valais Leuk Turtmann-Unterems Turtmann Valley ⓘ Barrhorn series outcrops	Feenstra et al. (2003)
ⓘ Brunegg pass	Stalder et al. (1998) +1 other reference
Martigny Mont Chemin mining district ⓘ Jeur Durant
Saint-Maurice Collonges ⓘ Coal mine	Stalder et al. (1998)

Tajikistan
Gorno-Badakhshan Shughnon Shakhdara Range ⓘ Vez-Dara River Valley	Pavel M. Kartashov analytical data of ...

UK
Wales Carmarthenshire Pumpsaint ⓘ Ogofau Mine (Roman Deep Mine; Dolaucothi Mine; Cothy Mine)	Brammall

USA
Arizona Maricopa County ⓘ White Picacho Mining District	Jahns (1952) +1 other reference
Arkansas ⓘ Perry County	Howard (2007)
ⓘ Pulaski County	Howard (1987)
Jeffrey ⓘ Jeffrey Quarry	Miser et al. (in coop. with the U.S.G.S.) +3 other references
Little Rock ⓘ Granite Mountain area
ⓘ Big Rock Quarry (3M Quarry; Arch Street Pike Quarry)	Rocks & Min.:63:120. +1 other reference
ⓘ North Little Rock	Cerny (1970)
ⓘ Big Rock Quarry (Big Rock Sandstone Quarry)	Smith (1988)
ⓘ Kellogg Mine (Confederate Mine; German shaft; Welldiggen claim)	Dana 6: 140 & 692. +1 other reference
Saline County Bland ⓘ Stand-on-Your-Head No. 1 mine (Alum Creek prospect)	Wilson (1986) +1 other reference
Paron ⓘ Green's Crystal Mine (Clouds Mine)	Smith (1997)
ⓘ Stand on Your Head 2 Mine	Rocks & Min.: 62:318-319. +1 other reference
ⓘ Williams Junction Quartz Workings	Rocks & Minerals (1988)
ⓘ Sevier County	Howard (1987) +1 other reference
California Riverside County Cahuilla Mining District Little Cahuilla Mountain ⓘ Sly Rick prospect (Green Centipede claim)	San Diego Mining Company (1998)
San Bernardino County Oro Grande Mining District ⓘ Oro Grande	Murdoch (1966)
San Diego County Mesa Grande Mining District Gem Hill ⓘ Himalaya Mine	Foord et al. (1986) +1 other reference
Mesa Grande ⓘ Esmeralda Mine	illus. +1 other reference
Pala Mining District Pala Chief Mountain Elizabeth R. Mine (Hazel W. claim) ⓘ Oceanview Mine (Oceanview adits; new Oceanview workings)	Mark Mauthner +2 other references
ⓘ Pala Chief Mine	Jahns et al. (1951)
Hiriart Mountain Vanderberg-Katerina pegmatites ⓘ Katerina Mine	Jahns et al. (1951)
ⓘ Vanderberg Mine	Jahns et al. (1951)
Tourmaline Queen Mountain (Pala Mtn; Queen Mtn) ⓘ Stewart Mine	www.gemandmineral.com/stewartmine.html.
ⓘ Tourmaline King Mine	Jahns et al. (1951) +2 other references
ⓘ Tourmaline Queen Mine	Schaller +4 other references
Ramona Mining District Ramona ⓘ Hercules Mine (Beryl claim; Hercules claim; Hercules group; Hercules prospect)	Foord et al. (1989)
Little Three Mine area ⓘ Cable Mine (Little Three Extension prospect; New A.B.C. prospect; New ABC prospect)	plate 5 +3 other references
ⓘ Little Three Mine	Foord et al. (1989)
ⓘ Lookout Mine (Hercules group; Lookout prospect; Upper Hercules mine)	San Diego Mining Company
Rincon Mining District Rincon Rincon Mountain ⓘ Victor Mine (Big Buck mine; Big Buck prospect)	Rogers
Warner Springs Mining District Warner Springs ⓘ Cryo-Genie Mine	Rocks & Minerals
Colorado El Paso County ⓘ Stove Mountain (Cookstove Mountain)	Eckel et al. (1997)
Gunnison County ⓘ Little Katherine Mine (Bazooka Mine)	Eckel et al. (1997)
Quartz Creek Pegmatite Mining District ⓘ Bazooka	Hanley et al. (1950) +1 other reference
Connecticut Hartford County Glastonbury East Glastonbury ⓘ Brack Gem prospect (Brack prospect)	King (n.d.)
South Glastonbury ⓘ Simpson Quarry (Wiarda Quarry)	Jeremy Zolan Micromount Collection
Middlesex County East Hampton ⓘ Anderson No. 1 Mica Mine	Schooner (circa 1990) +1 other reference
ⓘ State Forest Quarry No. 1	Anthony Scalzi collection
Haddam Haddam Neck ⓘ Gillette Quarry (J-J Mine; Haddam Neck Quarry)	Bowman (1902) +3 other references
ⓘ Quarry Hill (Brainerd Quarries; Shailor Quarries)	Moritz (n.d.)
ⓘ Hewitt Gem Quarry (Herb's Gem Quarry; Sawmill Quarry)	Leif DeValentino collection
Middletown White Rock Mining District ⓘ Riverside Quarry (Western Quarry)	Moritz (n.d.)
ⓘ White Rocks Quarry (Consolidated Quarry)	Moritz (n.d.) +1 other reference
Portland Collins Hill Strickland pegmatite ⓘ Strickland Quarry	Ralph Lieser of Pappy’s Beryl Shop +3 other references
Maine Androscoggin County Auburn East Mount Apatite Mining District ⓘ Greenlaw Quarry	Thompson et al. (1998)
ⓘ Hatch Farm prospect
ⓘ Maine Feldspar Quarry	Bastin (1911) +1 other reference
ⓘ Turner Quarries
West Mount Apatite Mining District ⓘ Groves Quarry (Hole in the Ground Quarry)
ⓘ Keith Quarry (Towne Quarry)	USGS Bull 445
ⓘ Pulsifer Quarry & Dionne extension	Wilson (1977) +1 other reference
ⓘ Wade Quarry (Androscoggin Tourmaline prospect)
Poland ⓘ Berry-Havey Quarry	King et al. (1994) +1 other reference
Oxford County Albany ⓘ ~~Bumpus Quarry~~	King (2009)
ⓘ Songo Pond Quarry (Kimball Ledge Quarry)	King (2009)
ⓘ Buckfield	Cerny (1970)
ⓘ Bennett Quarry	King et al. (1991) +1 other reference
ⓘ Larrivee prospect	King (n.d.)
Greenwood ⓘ Hayes Ledge Quarries (East and West)	Henry Minot collection
ⓘ Morgan Quarry (Morgan Pit; Upper Noyes Mountain Quarry; Upper Harvard Quarry)	Maine Pegmatite Workshop 2004
ⓘ Noyes Mountain Quarry (Harvard Quarry)	Cameron +2 other references
ⓘ Outback prospect (Gross prospect)	Steve Bonney Collection.
ⓘ Tamminen Quarry	Mineral News (1993) +1 other reference
Uncle Tom Mountain ⓘ Emmons Quarry	Thompson et al. (1998) +2 other references
ⓘ Waisanen Quarry (Tamminen-Waisanen Quarry)	Thompson et al. (1998)
Hebron Mount Rubellite ⓘ Mount Rubellite Quarries (TL)	USGS Bull 445 +3 other references
Newry ⓘ Crooker Gem Pegmatite Quarries	King et al. (1994) +1 other reference
ⓘ Dunton Gem Quarry	King et al. (1994) +1 other reference
ⓘ Nevel Quarry	King et al. (1994) +1 other reference
Norway ⓘ B.B. No. 7 Quarry
Paris ⓘ Mount Marie Quarries
ⓘ Mount Mica Quarry (TL)	King et al. (1994) +1 other reference
ⓘ Ryerson Hill Quarries
Peru ⓘ Perry Petalite prospect	Dionne et al. (2014)
Rumford ⓘ Black Mountain Quarry	Thompson et al. (1998)
West Paris ⓘ Ski Pike Quarry
Sagadahoc County Georgetown ⓘ Howard-Collins Quarry	King et al. (1994)
Topsham ⓘ Fisher Quarry	Yatesvitch (1935)
Massachusetts Hampden County Blandford ⓘ Blandford mica mines ?	"Western Massachusetts Mineral ...
Hampshire County Chesterfield ⓘ Clark Ledge pegmatite locality ?	"Western Massachusetts Mineral ...
Goshen ⓘ Barrus farm pegmatite localities ?	"Western Massachusetts Mineral ...
Montana Madison County ⓘ Stone Creek pegmatite	Heinrich (Pegmatites of Montana, Economic Geology, Vol. 44, No. 4, June-July 1949)
New Hampshire Rockingham County Raymond ⓘ Chandler Mine
Strafford County Strafford ⓘ Parker Mountain Mine	Rocks & Min.:64:504. +1 other reference
North Carolina Cleveland County Kings Mountain ⓘ Foote Lithium Co. Mine	Hanahan (1985)
South Dakota Custer County Custer Mining District Fourmile ⓘ Tin Mountain Mine	Smith et al. (2000)
Virginia Amelia County Winterham ⓘ Morefield Mine (Morefield pegmatite)	Kearns et al. (2016)
Wisconsin Florence County Fern Pine River pegmatites ⓘ Animikie Red Ace pegmatite	Falster et al. (1996)
Marathon County ⓘ Wausau Intrusive Complex	Falster (1981) +1 other reference
ⓘ "Rotten granite" quarries	Falster (1987)

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Cookeite

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