Named in honour of Ernst Florens Friedrich Chladni (30 November 1756, Wittenberg, Electorate of Saxony - 3 April 1827, Breslau, Prussia), physicist at the University of Riga, Latvia. He has been referred to as the "father" of meteoritics, for theorizing the origin of meteorites. He is also called the father of acoustics.

Type Locality:

ⓘ Carlton meteorite, Carlton, Hamilton County, Texas, USA

The Mg analogue of fillowite and johnsomervilleite.

Chemically close minerals (also anhydrous) include czochralskiite, brianite, and merrillite - all known from meteorites.

Originally found as a single grain (975 x 175 micrometers) with chlorapatite, olivine, pyroxene, plagioclase, schreibersite, and troilite.

Just recently a terrestrial occurrence evidence was reported by Rius (2016). It is of pegmatitic origin and was determined using a relatively new technique: through-the-substrate microdiffraction (tts-μXRD). This terrestrial chladniite is different from the meteoritic one in cation (Mg, Fe+Mn & Ca) ordering, and is said to have the M(1) site dominated by Mn (the question thus arises if this is still chladniite).

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Unique IdentifiersHide

Mindat ID:

1008

Long-form identifier:

mindat:1:1:1008:1

Similar NamesHide

Chladnite

A synonym of Enstatite

IMA Classification of ChladniiteHide

IMA status:

Approved

Approval year:

1993

First published:

1994

Approval history:

Formula redefinition: https://www.eur-j-mineral.net/32/275/2020/

Classification of ChladniiteHide

Strunz-mindat (2026):

8.AC.50

8 : PHOSPHATES, ARSENATES, VANADATES
A : Phosphates, etc. without additional anions, without H₂O
C : With medium-sized and large cations

Dana 7th ed.:

38.2.9.3

Dana 8th ed.:

38.2.5.3

38 : ANHYDROUS NORMAL PHOSPHATES, ARSENATES, AND VANADATES
2 : (AB)₅(XO₄)₃

Mineral SymbolsHide

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

Symbol	Source	Reference for Standard
Clad	IMA–CNMNC	Warr, L.N. (2021). IMA–CNMNC approved mineral symbols. Mineralogical Magazine, 85(3), 291-320. doi:10.1180/mgm.2021.43

Physical Properties of ChladniiteHide

Lustre:

Sub-Vitreous, Resinous

Transparency:

Transparent

Colour:

Colorless

Streak:

White

Hardness:

4½ - 5 on Mohs scale

Tenacity:

Brittle

Cleavage:

Imperfect/Fair
Rhombohedral

Fracture:

Irregular/Uneven

Density:

3.017(2) g/cm³ (Calculated)

Optical Data of ChladniiteHide

Type:

Uniaxial (+)

RI values:

n_ω = 1.60 n_ε = 1.62

Birefringence:

0.02

Max. Birefringence:

δ = 0.020
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

Rotation:

Surface Relief:

Moderate

Anisotropism:

weak

Colour in reflected light:

Gray

Internal Reflections:

orange-brown

Pleochroism:

Non-pleochroic

Comments:

Weakly anisotropic

Chemistry of ChladniiteHide

Mindat Formula:

Na₃CaMg₁₁(PO₄)₉

Element Weights:

Element	% weight
O	46.784 %
P	22.643 %
Mg	21.716 %
Na	5.602 %
Ca	3.255 %

Calculated from ideal end-member formula.

Elements listed:

Ca, Mg, Na, O, P - search for minerals with similar chemistry

Common Impurities:

Fe,Mn,Si

Chemical AnalysisHide

Empirical formulas:

Sample ID	Empirical Formula
1	^M13(Na_0.56◻_0.44)M²¹²(Na_0.81Ca0_.19)^M31₂(Na_0.97◻_0.03)^M126(Ca_0.64Na_0.36)M16MnM2(Mg0.54Ca0.46)M3-9Mg30M10(Mg0.94Ca0.06)^M116Mg₆(P_33.53As_2.47)O₁₄₄

Sample references:

ID	Locality	Reference	Notes
1	Arsenatnaya fumarole, Second scoria cone, Northern Breakthrough, Great Fissure eruption, Tolbachik Volcanic field, Milkovsky District, Kamchatka Krai, Russia	Pekov, I.V., Zubkova, N.V., Agakhanov, A.A., Turchova, A.G., Zhitova, E.S., Pushcharovskii, D.Yu. (2023): New Chladniite Variety from Volcanic Exhalations. The Genetic Crystal Chemistry of Chladniite. Doklady Earth Sciences, 512, 975-988.	the above is the structural formula

Crystallography of ChladniiteHide

Crystal System:

Trigonal

Class (H-M):

3 - Rhombohedral

Space Group:

Setting:

Cell Parameters:

a = 14.967(2) Å, c = 42.595(4) Å

Ratio:

a:c = 1 : 2.846

Unit Cell V:

8,263.40 Å³ (Calculated from Unit Cell)

Morphology:

Rims around other phosphates and silicates.

Crystal StructureHide

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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)
0004225	Stornesite-(Y)	Grew E S, Armbruster T, Medenbach O, Yates M G, Carson C J (2006) Stornesite-(Y), (Y, Ca)Vacancy2Na6(Ca,Na)8(Mg,Fe)43(PO4)36, the first terrestrial Mg-dominant member of the fillowite group, from granulite-facies paragneiss in the Larsemann Hills, Prydz Bay, East Antarctica American Mineralogist 91 1412-1424		2006	Larsemann Hills, Prydz Bay, East Antarctica	0	293

CIF Raw Data - click here to close

data_global
_chemical_name_mineral 'Stornesite-(Y)'
loop_
_publ_author_name
'Grew E S'
'Armbruster T'
'Medenbach O'
'Yates M G'
'Carson C J'
_journal_name_full 'American Mineralogist'
_journal_volume 91 
_journal_year 2006
_journal_page_first 1412
_journal_page_last 1424
_publ_section_title
;
 Stornesite-(Y), (Y, Ca)Vacancy2Na6(Ca,Na)8(Mg,Fe)43(PO4)36, the first
 terrestrial Mg-dominant member of the fillowite group, from granulite-facies
 paragneiss in the Larsemann Hills, Prydz Bay, East Antarctica
 Note: Isostructural with chladniite
;
_database_code_amcsd 0004225
_chemical_compound_source 'Larsemann Hills, Prydz Bay, East Antarctica'
_chemical_formula_sum 'Y.677 Ca5.107 Yb.06 Na9.282 Mg31.81 Fe11.19 P36 O144'
_cell_length_a 14.9628
_cell_length_b 14.9628
_cell_length_c 42.756
_cell_angle_alpha 90
_cell_angle_beta 90
_cell_angle_gamma 120
_cell_volume 8289.979
_exptl_crystal_density_diffrn      3.188
_symmetry_space_group_name_H-M 'R -3'
loop_
_space_group_symop_operation_xyz
  'x,y,z'
  '2/3+x,1/3+y,1/3+z'
  '1/3+x,2/3+y,2/3+z'
  'y,-x+y,-z'
  '2/3+y,1/3-x+y,1/3-z'
  '1/3+y,2/3-x+y,2/3-z'
  '-x+y,-x,z'
  '2/3-x+y,1/3-x,1/3+z'
  '1/3-x+y,2/3-x,2/3+z'
  '-x,-y,-z'
  '2/3-x,1/3-y,1/3-z'
  '1/3-x,2/3-y,2/3-z'
  '-y,x-y,z'
  '2/3-y,1/3+x-y,1/3+z'
  '1/3-y,2/3+x-y,2/3+z'
  'x-y,x,-z'
  '2/3+x-y,1/3+x,1/3-z'
  '1/3+x-y,2/3+x,2/3-z'
loop_
_atom_site_label
_atom_site_fract_x
_atom_site_fract_y
_atom_site_fract_z
_atom_site_occupancy
_atom_site_U_iso_or_equiv
Y2   0.00000   0.00000   0.00000   0.67700   0.00823
CaY2   0.00000   0.00000   0.00000   0.26300   0.00823
YbY2   0.00000   0.00000   0.00000   0.06000   0.00823
NaX   0.00000   0.00000   0.17600   0.06300   0.01013
Na1  -0.41080  -0.09410   0.16822   1.00000   0.03052
Ca1   0.02630  -0.26800   0.00022   0.58100   0.01672
NaCa1   0.02630  -0.26800   0.00022   0.41900   0.01672
Ca2   0.66667   0.33333   0.08913   0.67900   0.01697
NaCa2   0.66667   0.33333   0.08913   0.32100   0.01697
Mg1   0.00000   0.00000   0.10570   0.97300   0.01267
Fe1   0.00000   0.00000   0.10570   0.02700   0.01267
Mg2   0.66667   0.33333   0.00830   0.96700   0.01013
Fe2   0.66667   0.33333   0.00830   0.03300   0.01013
Mg3   0.33333   0.66667   0.06300   1.00000   0.01659
Mg4  -0.53930  -0.11010   0.03880   0.54500   0.01431
Fe4  -0.53930  -0.11010   0.03880   0.45500   0.01431
Mg5  -0.68000  -0.00270   0.08198   0.88800   0.01013
Fe5  -0.68000  -0.00270   0.08198   0.11200   0.01013
Mg6  -0.10890   0.11160   0.13588   0.66900   0.01634
Fe6  -0.10890   0.11160   0.13588   0.33100   0.01634
Mg7  -0.25300   0.17580   0.05190   0.72000   0.01343
Fe7  -0.25300   0.17580   0.05190   0.28000   0.01343
Mg8  -0.32930  -0.06770   0.08584   0.62600   0.01026
Fe8  -0.32930  -0.06770   0.08584   0.37400   0.01026
Mg9  -0.42360   0.08100   0.12567   0.79200   0.01874
Fe9  -0.42360   0.08100   0.12567   0.20800   0.01874
Fe10   0.00000   0.00000   0.50000   0.51000   0.00633
Mg10   0.00000   0.00000   0.50000   0.49000   0.00633
P1   0.53290   0.11620   0.03848   1.00000   0.01001
P2   0.44600   0.20700   0.12282   1.00000   0.01165
P3   0.19710   0.11650   0.05547   1.00000   0.01165
P4   0.12300   0.24290   0.13363   1.00000   0.01102
P5   0.18980   0.43480   0.02793   1.00000   0.00874
P6   0.12760   0.56940   0.11069   1.00000   0.01026
O1   0.55740   0.03500   0.05090   1.00000   0.01773
O2   0.63900   0.21830   0.03930   1.00000   0.01393
O3   0.45580   0.12890   0.05900   1.00000   0.01431
O4   0.49020   0.09330   0.00510   1.00000   0.01520
O5   0.53710   0.18900   0.12410   1.00000   0.01900
O6   0.34320   0.10910   0.11460   1.00000   0.01153
O7   0.43060   0.25110   0.15280   1.00000   0.02913
O8   0.47210   0.29320   0.09800   1.00000   0.01900
O9   0.24710   0.05020   0.05040   1.00000   0.01482
O10   0.13510   0.08790   0.08560   1.00000   0.02913
O11   0.13730   0.11580   0.02650   1.00000   0.02913
O12   0.28670   0.23230   0.05930   1.00000   0.01393
O13   0.22650   0.24350   0.13120   1.00000   0.01646
O14   0.03460   0.13090   0.13470   1.00000   0.01418
O15   0.11870   0.29910   0.10380   1.00000   0.01520
O16   0.12520   0.30320   0.16270   1.00000   0.01520
O17   0.25660   0.39920   0.04510   1.00000   0.01406
O18   0.16190   0.38250  -0.00430   1.00000   0.01254
O19   0.08930   0.40950   0.04480   1.00000   0.01191
O20   0.25310   0.55390   0.02540   1.00000   0.01393
O21   0.04400   0.45400   0.11010   1.00000   0.01355
O22   0.19090   0.60390   0.08010   1.00000   0.01153
O23   0.19530   0.59380   0.13930   1.00000   0.01773
O24   0.06310   0.62570   0.11280   1.00000   0.01393
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
Y2 0.00820 0.00820 0.00800 0.00410 0.00000 0.00000
CaY2 0.00820 0.00820 0.00800 0.00410 0.00000 0.00000
YbY2 0.00820 0.00820 0.00800 0.00410 0.00000 0.00000
Na1 0.04700 0.04100 0.02200 0.03700 0.00500 0.00800
Ca1 0.01000 0.02300 0.01400 0.00600 -0.00060 0.00180
NaCa1 0.01000 0.02300 0.01400 0.00600 -0.00060 0.00180
Ca2 0.01600 0.01600 0.01900 0.00790 0.00000 0.00000
NaCa2 0.01600 0.01600 0.01900 0.00790 0.00000 0.00000
O1 0.02400 0.01300 0.01900 0.01200 -0.00400 -0.00100
O2 0.01200 0.01300 0.01500 0.00500 0.00200 0.00300
O3 0.01200 0.01500 0.01500 0.00600 0.00500 0.00200
O4 0.01800 0.01700 0.01000 0.00800 0.00000 0.00000
O5 0.01400 0.01900 0.02700 0.01100 -0.00300 0.00000
O6 0.00800 0.01300 0.01000 0.00200 0.00000 -0.00300
O7 0.03900 0.04200 0.02300 0.03200 -0.01100 -0.02100
O8 0.01800 0.01400 0.02200 0.00600 -0.00600 -0.00100
O9 0.01600 0.01600 0.01700 0.01100 0.00200 0.00200
O10 0.02500 0.02000 0.03400 0.00600 0.01400 -0.00400
O11 0.02900 0.02900 0.03500 0.01900 -0.02000 -0.01200
O12 0.00900 0.01100 0.02000 0.00400 0.00200 -0.00200
O13 0.01400 0.01300 0.02300 0.00800 0.00000 0.00200
O14 0.01300 0.01300 0.01500 0.00500 0.00500 -0.00100
O15 0.01300 0.01600 0.01500 0.00600 0.00100 0.00200
O16 0.01600 0.01500 0.01300 0.00700 0.00100 -0.00100
O17 0.01400 0.01800 0.01300 0.01100 -0.00100 0.00400
O18 0.01100 0.01300 0.01100 0.00500 -0.00100 -0.00200
O19 0.01100 0.01400 0.01200 0.00700 0.00200 0.00200
O20 0.01900 0.01200 0.01000 0.00700 0.00200 0.00300
O21 0.01300 0.00900 0.01400 0.00200 0.00100 -0.00200
O22 0.01400 0.01500 0.00800 0.01000 0.00100 0.00000
O23 0.01500 0.02300 0.01300 0.00700 -0.00100 0.00300
O24 0.01800 0.01500 0.01300 0.01100 0.00300 0.00300

X-Ray Powder DiffractionHide

Powder Diffraction Data:

d-spacing	Intensity
3.69 Å	(strong)
3.56 Å	(medium)
3.08 Å	(weak)
2.96 Å	(strong)
2.50 Å	(medium)
2.75 Å	(strong)
2.13 Å	(medium)
1.851 Å	(medium)

Comments:

American Mineralogist 79:375 (1994)

Geological EnvironmentHide

Paragenetic Mode(s):

Paragenetic Mode	Earliest Age (Ga)
Stage 2: Planetesimal differentiation and alteration	4.566-4.550
5 : Primary asteroid phases	4.566–4.560
6 : Secondary asteroid phases	4.566-4.560

Geological Setting:

Iron and primitive achondrite meteorites

Type Occurrence of ChladniiteHide

Type Locality:

ⓘ Carlton meteorite, Carlton, Hamilton County, Texas, USA

General Appearance of Type Material:

A single grain, which measures 175 x 975 µm.

Place of Conservation of Type Material:

National Museum of Natural History (Smithsonian Institution), Washington, D.C., USA, number 2707.

Geological Setting of Type Material:

In type IIICD iron meteorite and primitive achondrite meteorite.

Associated Minerals at Type Locality:

Synonyms of ChladniiteHide

IMA1993-010

Other Language Names for ChladniiteHide

Dutch:Chladniiet

German:Chladniit

Spanish:Chladniita

Varieties of ChladniiteHide

Stornesite-(Y)

An Y-bearing chladniite. Originally described as a new mineral, the Y-dominant analogue of Chladniite by Grew et al. (2006).

Discredited by the IMA in February 2020 (IMA Newsletter 54).

Relationship of Chladniite to other SpeciesHide

Member of:

Fillowite Group

Other Members of Fillowite Group:

Fillowite	Na₃CaMn²⁺₁₁(PO₄)₉	Trig. 3 : R3
Galileiite	Na₃Fe²⁺Fe²⁺₁₁(PO₄)₉	Trig. 3 : R3
Johnsomervilleite	Na₃CaFe₁₁(PO₄)₉	Trig. 3 : R3

Related Minerals - Strunz-mindat Grouping Hide

8.AC.	'Crocobelonite-1M'	CaFe³⁺₂O(PO₄)₂	Mon. 2/m : P2₁/m
8.AC.	Magnesioqingheiite	Na₂Mg(MgAl)(PO₄)₃	Mon. 2/m
8.AC.	Manganobadalovite	NaNaMn(MgFe³⁺)(AsO₄)₃	Mon. 2/m : B2/b
8.AC.	Changesite-(Y)	(Ca₈Y)◻Fe²⁺(PO₄)₇	Trig. 3m : R3c
8.AC.	Babunaite-(Nd)	NdAsO₄	Tet. 4/m : I4₁/a
8.AC.	Crocobelonite	CaFe³⁺₂O(PO₄)₂	Orth. mmm(2/m2/m2/m) : Pnma
8.AC.	Wopmayite	Ca₆Na₃◻Mn(PO₄)₃(PO₃OH)₄	Trig. 3m : R3c
8.AC.	Beershevaite	CaFe³⁺₃(PO₄)₃O	Mon. 2/m : P2₁/m
8.AC.	Epiebnerite	(NH₄)Zn(PO₄)	Mon. 2 : P2₁
8.AC.	Ebnerite	(NH₄)Zn(PO₄)	Hex. 6 : P6₃
8.AC.X	Dyrnaesite-(La)	Na₈Ce⁴⁺(La,REE)₂(PO₄)₆	Orth. mmm(2/m2/m2/m) : Pnma
8.AC.	Edtollite	K₂NaCu₅Fe³⁺O₂(AsO₄)₄	Tric. 1 : P1
8.AC.	Angarfite	NaFe³⁺₅(PO₄)₄(OH)₄ · 4H₂O	Orth. 222 : C222₁
8.AC.	Kabalovite	Fe²⁺₃Fe³⁺₄(PO₄)₆	Tric. 1 : P1
8.AC.	Nazarchukite	Ca₂NiFe³⁺₂(PO₄)₄	Orth. mmm(2/m2/m2/m) : Pbca
8.AC.	Calciohatertite	NaNaCa(CaFe³⁺)(AsO₄)₃	Mon. 2/m : B2/b
8.AC.	Alumoedtollite	K₂NaCu₅AlO₂(AsO₄)₄	Tric. 1 : P1
8.AC.02	Grigorievite	Cu₃Fe³⁺₂Al₂(VO₄)₆	Tric. 1 : P1
8.AC.02	Koksharovite	CaMg₂Fe³⁺₄(VO₄)₆	Tric. 1 : P1
8.AC.02	Ziminaite	Fe³⁺ ₆ (VO₄)₆	Tric. 1 : P1
8.AC.05	Hatertite	Na₂(Ca,Na)(Fe³⁺,Cu)₂(AsO₄)₃	Mon. 2/m : B2/b
8.AC.05	Erikapohlite	Cu₃(Zn,Cu,Mg)₄Ca₂(AsO₄)₆ · 2H₂O	Mon. 2/m : B2/m
8.AC.05	'Unnamed (Na-Mg Arsenate Hydroxyarsenate)'	NaMg₃(AsO₄)(AsO₃OH)₂	Mon. 2/m : B2/b
8.AC.05	'Unnamed (Na-Zn-H Arsenate Hydroxyarsenate)'	Na(Na_0.6Zn_0.4)Zn₂(H_0.6AsO₄)(AsO₃OH)₂	Mon. 2/m : B2/b
8.AC.05	Calciojohillerite	NaCaMg₃(AsO₄)₃	Mon. 2/m : B2/b
8.AC.05	Magnesiohatertite	(Na,Ca)₂Ca(Mg,Fe³⁺)₂(AsO₄)₃	Mon. 2/m : B2/b
8.AC.05 va	'Alluaudite-Na[]'	◻₄Na₄Mn²⁺₄Fe³⁺₈(PO₄)₁₂	Mon. 2/m : B2/b
8.AC.05 va	'Alluaudite-Ca[]'	◻₄Ca₄Mn²⁺₄Fe³⁺₈(PO₄)₁₂	Mon. 2/m : B2/b
8.AC.05 va	'Ferroalluaudite-NaNa'	Na₄Na₄Fe²⁺₄Fe³⁺₈(PO₄)₁₂	Mon. 2/m : B2/m
8.AC.05	'Hagendorfite-NaNa'	NaNaFe²⁺(Mn²⁺,Mn³⁺)(PO₄)₃ (?)	Mon. 2/m : B2/b
8.AC.05	O'Danielite	Na(Zn,Mg)₃(AsO₄)(AsO₃OH)₂	Mon. 2/m : B2/b
8.AC.05	Howardevansite	NaCuFe₂(VO₄)₃	Tric. 1 : P1
8.AC.05	Khrenovite	Na₃Fe³⁺₂(AsO₄)₃	Mon. 2/m : B2/b
8.AC.05	Zincobradaczekite	NaZn₂Cu₂(AsO₄)₃	Mon. 2/m : B2/b
8.AC.05	Paraberzeliite	NaCa₂Mg₂(AsO₄)₃	Mon. 2/m : B2/b
8.AC.05	Badalovite	Na₂Mg₂Fe(AsO₄)₃	Mon. 2/m : B2/b
8.AC.05	Magnesiocanutite	NaMnMg₂[AsO₄]₂[AsO₂(OH)₂]	Mon. 2/m : B2/b
8.AC.05	Manganohatertite	NaNaCa(MnFe³⁺)(AsO₄)₃	Mon. 2/m : B2/b
8.AC.05	Camanchacaite	NaCaMg₂[AsO₄][AsO₃(OH)]₂	Mon. 2/m : B2/b
8.AC.07	Zhanghuifenite	Na₃Mn₄Mg₂Al(PO₄)₆	Mon. 2/m
8.AC.07	Ferrobobfergusonite	Na₂Fe²⁺₅Fe³⁺Al(PO₄)₆	Mon.
8.AC.10	Hagendorfite	NaCaMn²⁺Fe²⁺₂(PO₄)₃	Mon. 2/m : B2/b
8.AC.10	'Ferrohagendorfite'	NaCaFe²⁺Fe²⁺₂(PO₄)₃	Mon.
8.AC.10	Johillerite	Na(Mg,Zn)₃Cu(AsO₄)₃	Mon. 2/m : B2/b
8.AC.10	Varulite	NaCaMn²⁺Mn²⁺₂(PO₄)₃	Mon. 2/m : B2/b
8.AC.10	Nickenichite	Na_0.8Ca_0.4Cu_0.4(Mg,Fe)₃(AsO₄)₃	Mon. 2/m : B2/b
8.AC.10	Arseniopleite	NaCaMnMn₂(AsO₄)₃	Mon. 2/m
8.AC.10	Groatite	NaCaMn₂(PO₄)[PO₃(OH)]₂	Mon. 2/m : B2/b
8.AC.10	Alluaudite	(Na,Ca)Mn²⁺(Fe³⁺,Mn²⁺,Fe²⁺,Mg)₂(PO₄)₃	Mon. 2/m : B2/b
8.AC.10	Bradaczekite	NaCu₄(AsO₄)₃	Mon. 2/m : B2/b
8.AC.10	Caryinite	(Na,Pb)(Ca,Na)CaMn²⁺₂(AsO₄)₃	Mon. 2/m
8.AC.10	Ferroalluaudite	(Na,Ca)Fe²⁺(Fe³⁺,Mn²⁺,Fe²⁺)₂(PO₄)₃	Mon. 2/m : B2/b
8.AC.10	Maghagendorfite	(Na,◻)MgMn²⁺(Fe²⁺,Fe³⁺)₂(PO₄)₃	Mon. 2/m
8.AC.15	Ferrowyllieite	(Na,Ca,Mn)(Fe,Mn)(Fe,Fe,Mg)Al(PO₄)₃	Mon. 2/m : P2₁/b
8.AC.15	Qingheiite	NaNaMn²⁺(MgAl)(PO₄)₃	Mon. 2/m : P2₁/b
8.AC.15	Rosemaryite	(Na,Ca,Mn)(Mn,Fe²⁺)(Fe³⁺,Mg)Al(PO₄)₃	Mon. 2/m : P2₁/b
8.AC.15	Ferroqingheiite	NaNaFe²⁺(MgAl)(PO₄)₃	Mon. 2/m : P2₁/m
8.AC.15	Ferrorosemaryite	◻NaFe²⁺Fe³⁺Al(PO₄)₃	Mon. 2/m
8.AC.15	Bobfergusonite	Na₂Mn₅FeAl(PO₄)₆	Mon. 2/m : P2/b
8.AC.15	Wyllieite	(Na,Ca,Mn)(Mn,Fe)(Fe,Mg)Al(PO₄)₃	Mon. 2/m
8.AC.17	Czochralskiite	Na₄Ca₃Mg(PO₄)₄	Orth. mmm(2/m2/m2/m) : Pnma
8.AC.18	Manitobaite	Na₁₆Mn²⁺ ₂₅Al₈(PO₄)₃₀	Mon. m : Pb
8.AC.20	Marićite	NaFe²⁺(PO₄)	Orth. mmm(2/m2/m2/m) : Pmna
8.AC.25	Schäferite	(NaCa₂)Mg₂(VO₄)₃	Iso. m3m(4/m32/m) : Ia3d
8.AC.25	Berzeliite	(NaCa₂)Mg₂(AsO₄)₃	Iso. m3m(4/m32/m) : Ia3d
8.AC.25	Matyhite	Ca₁₈(Ca,◻)₂Fe²⁺₂(PO₄)₁₄	Trig. 3m : R3c
8.AC.25	Hedegaardite	(Ca,Na)₉(Ca,Na)Mg(PO₄)₆(PO₃OH)	Trig. 3m : R3c
8.AC.25	Manganberzeliite	(NaCa₂)Mn²⁺₂(AsO₄)₃	Iso. m3m(4/m32/m) : Ia3d
8.AC.25	Palenzonaite	(NaCa₂)Mn²⁺₂(VO₄)₃	Iso. m3m(4/m32/m) : Ia3d
8.AC.30	Brianite	Na₂CaMg(PO₄)₂	Mon. 2/m : P2₁/b
8.AC.35	Vitusite-(Ce)	Na₃(Ce,La,Nd)(PO₄)₂	Orth. mm2 : Pca2₁
8.AC.40	Bario-olgite	(Ba,Sr)(Na,Sr,REE)₂Na(PO₄)₂ ·	Trig. 3 : P3
8.AC.40	Olgite	(Sr,Ba)(Na,Sr,REE)₂Na(PO₄)₂	Trig. 3m(32/m) : P3m1
8.AC.45	Magnesiochangesite-(Ce)	(Ca₈Ce)◻Mg(PO₄)₇	Trig. 3m : R3c
8.AC.45	Tuite	Ca₃(PO₄)₂	Trig. 3m(32/m) : R3m
8.AC.45	Ferromerrillite	Ca₉NaFe²⁺(PO₄)₇	Trig. 3m : R3c
8.AC.45	Strontiowhitlockite	Sr₉Mg(PO₄)₆(PO₃OH)	Trig. 3m : R3c
8.AC.45	Magnesiochangesite-(Y)	(Ca₈Y)◻ Mg(PO₄)₇	Trig. 3m : R3m
8.AC.45	Changesite-(Ce)	(Ca₈Ce)◻Fe²⁺(PO₄)₇	Trig. 3m : R3c
8.AC.45	Merrillite	Ca₉NaMg(PO₄)₇	Trig. 3m : R3m
8.AC.45	Whitlockite	Ca₉Mg(PO₄)₆(PO₃OH)	Trig. 3m : R3c
8.AC.47	Iwateite	Na₂BaMn(PO₄)₂	Trig. 3 : P3
8.AC.47	Ozerovaite	Na₂KAl₃(AsO₄)₄	Orth. mmm(2/m2/m2/m) : Cmca
8.AC.47	Yurmarinite	Na₇(Fe³⁺,Mg,Cu)₄(AsO₄)₆	Trig. 3m(32/m) : R3c
8.AC.47	Pansnerite	K₃Na₃(Fe³⁺,Al)₆(AsO₄)₈	Orth. mmm(2/m2/m2/m)
8.AC.47	Anatolyite	Na₆(Ca,Na)(Mg,Fe³⁺)₃Al(AsO₄)₆	Trig. 3m(32/m) : R3c
8.AC.50	Fillowite	Na₃CaMn²⁺₁₁(PO₄)₉	Trig. 3 : R3
8.AC.50	Galileiite	Na₃Fe²⁺Fe²⁺₁₁(PO₄)₉	Trig. 3 : R3
8.AC.50	Johnsomervilleite	Na₃CaFe₁₁(PO₄)₉	Trig. 3 : R3
8.AC.50	Xenophyllite	Na₄Fe²⁺₇(PO₄)₆	Tric. 1 : P1
8.AC.50	Udinaite	NaMg₄(VO₄)₃	Tet. 42m : I42d
8.AC.50	Arsenudinaite	NaMg₄(AsO₄)₃	Tet. 42m : I42d
8.AC.52	Lasnierite	(Ca,Sr)(Mg,Fe²⁺)₂Al(P[O,F]₄)₃	Orth. mmm(2/m2/m2/m) : Pbcn
8.AC.55	Pharmazincite	KZnAsO₄	Hex. 6 : P6₃
8.AC.57	Zubkovaite	Ca₃Cu₃(AsO₄)₄	Mon. 2 : B2
8.AC.60	Kosnarite	KZr₂(PO₄)₃	Trig. 3m(32/m) : R3c
8.AC.65	Panethite	(Na,Ca)₂(Mg,Fe²⁺)₂(PO₄)₂	Mon. 2/m : P2₁/b
8.AC.70	Stanfieldite	Ca₄Mg₅(PO₄)₆	Mon.
8.AC.75	Ronneburgite	K₂MnV₄O₁₂	Mon. 2/m
8.AC.80	Tillmannsite	Ag₃Hg[(V,As)O₄]	Tet. 4 : I4
8.AC.85	Filatovite	K(Al,Zn)₂(As,Si)₂O₈	Mon. 2/m

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References for ChladniiteHide

Reference List:

Pekov, I.V., Zubkova, N.V., Agakhanov, A.A., Turchova, A.G., Zhitova, E.S., Pushcharovskii, D.Yu. (2023): New Chladniite Variety from Volcanic Exhalations. The Genetic Crystal Chemistry of Chladniite. Doklady Earth Sciences, 512, 975-988.

McCoy, T.J., Steele, I.M., Keil, K., Leonard, B.F., Endress, M. (1993) Chladniite: A New Mineral Honoring the Father of Meteoritics. Meteoritics: 28(3): 394.

McCoy, Timothy J.; Steele, Ian M.; Keil, Klaus; Leonard, B. F.; Endreç, Magnus (1994) Chladniite, Na2CaMg7(PO4)6: A new mineral from the Carlton (IIICD) iron meteorite. American Mineralogist, 79 (3-4). 375-380

Floss, Christine (1999) Fe, Mg, Mn-bearing phosphates in the GRA 95209 meteorite; occurrences and mineral chemistry. American Mineralogist, 84 (9) 1354-1359 doi:10.2138/am-1999-0912

(2005) Chladniite. Handbook of Mineralogy. Mineralogical Society of America

Grew, E. S., Yates, M. G., Beane, R. J., Floss, C., Gerbi, C. (2010) Chopinite-sarcopside solid solution, [(Mg,Fe)3 ](PO4)2, in GRA95209, a transitional acapulcoite: Implications for phosphate genesis in meteorites. American Mineralogist, 95 (2) 260-272 doi:10.2138/am.2010.3153

Rius, J. (2016) Terrestrial Chladniite Embedded In Polished Thin Sections Refined From Tts Microdiffraction Data. MISCA2016, MS6-OP2; http://forum.amiminerals.it/viewtopic.php?f=5&t=12854 (2016)

Vallcorba, Oriol, Casas, Lluís, Colombo, Fernando, Frontera, Carlos, Rius, Jordi (2017) First terrestrial occurrence of the complex phosphate chladniite: crystal-structure refinement by synchrotron through-the-substrate microdiffraction. European Journal of Mineralogy, 29 (2) 287-293 doi:10.1127/ejm/2017/0029-2590

Hatert, Frédéric, Grew, Edward S., Vignola, Pietro, Rotiroti, Nicola, Nestola, Fabrizio, Keller, Paul, Baijot, Maxime, Bruni, Yannick, Fransolet, André-Mathieu, Dal Bo, Fabrice, Depret, Martin (2021) Crystal chemistry and nomenclature of fillowite-type phosphates. The Canadian Mineralogist, 59 (4) 781-796 doi:10.3749/canmin.2000043

Localities for ChladniiteHide

Showing 11 localities.

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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.


Antarctica
East Antarctica Princess Elizabeth Land Ingrid Christensen Coast Prydz Bay Larsemann Hills ⓘ Brattnevet Peninsula	[var: Stornesite-(Y)] Grew et al. (2006)
Stornes Peninsula ⓘ Johnston Firth	[var: Stornesite-(Y)] Grew et al. (2006) +1 other reference
Wisconsin Range ⓘ Graves Nunataks meteorites	Floss (1999)
ⓘ Graves Nunataks 12510 meteorite	Anzures et al. (2024)
ⓘ Graves Nunataks 95209 meteorite	Floss (1999)

Argentina
ⓘ Córdoba Province	Vallcorba et al. (2017)
Pocho Department Parroquia District ⓘ Tablada I pegmatite	Vallcorba et al. (2017)

Brazil
Minas Gerais Galiléia Sapucaia do Norte ⓘ Sapucaia mine	Hatert et al. (2021)

Russia
Kamchatka Krai Milkovsky District Tolbachik Volcanic field Great Fissure eruption (Main Fracture) Northern Breakthrough (North Breach) Second scoria cone ⓘ Arsenatnaya fumarole	Pekov et al. (2023)
Sakha Oymyakonsky District ⓘ Elga meteorite	Litasov et al. (2017) +1 other reference

USA (TL)
Texas Hamilton County Carlton ⓘ Carlton meteorite (TL)	McCoy et al. (1994)

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Chladniite

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