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Kupletskite

A valid IMA mineral species - grandfathered

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Kupletskite

Poudrette quarry, Mont Saint-Hilaire, La Vallée-du-Richelieu RCM, Montérégie, Québec, Canada

Kupletskite, etc.

Pegmatite No. 47, Lepkhe-Nel'm Mt, Seidozero Lake, Lovozersky District, Murmansk Oblast, Russia

Kupletskite

Poudrette quarry, Mont Saint-Hilaire, La Vallée-du-Richelieu RCM, Montérégie, Québec, Canada

Kupletskite, etc.

Pegmatite No. 47, Lepkhe-Nel'm Mt, Seidozero Lake, Lovozersky District, Murmansk Oblast, Russia

Kupletskite

Poudrette quarry, Mont Saint-Hilaire, La Vallée-du-Richelieu RCM, Montérégie, Québec, Canada

Kupletskite

Poudrette quarry, Mont Saint-Hilaire, La Vallée-du-Richelieu RCM, Montérégie, Québec, Canada

Kupletskite, etc.

Pegmatite No. 47, Lepkhe-Nel'm Mt, Seidozero Lake, Lovozersky District, Murmansk Oblast, Russia

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About KupletskiteHide

Elsa Kupletskaya and Boris Kupletski

Formula:

K₂NaMn²⁺₇Ti₂[Si₄O₁₂]₂O₂(OH)₄F

Colour:

Dark brown to black, brown, yellow

Lustre:

Adamantine, Vitreous

Hardness:

3 - 4

Specific Gravity:

3.20 - 3.36

Crystal System:

Triclinic

Member of:

Kupletskite Group > Astrophyllite Supergroup

Name:

Named in honor of Boris Mikhailovich Kupletski (Борис Михайлович Куплетский) (10(22) January 1894, St. Petersburg, Russian Empire - 14 January 1964, Moscow, USSR), geologist and petrographer at the Institute of Geological Sciences of the USSR Academy of Sciences, and Elsa Maximilianovna Bohnshtedt Kupletskaya (Эльза Максимилиановна Бонштедт-Куплетская) (18(30) October 1897, St. Petersburg, Russian Empire - 10 July 1974, Moscow, USSR) mineralogist and professor at the Institute of Geology of Ore Deposits, Petrography, Mineralogy and Geochemistry (IGEM) of the Academy of Sciences of the USSR. The mineral bonshtedtite is also named after Kupletskaya.

Co-Type Localities:

ⓘ Kuivchorr Mountain, Lovozersky District, Murmansk Oblast, Russia
ⓘ Pegmatite No. 47, Lepkhe-Nel'm Mt, Seidozero Lake, Lovozersky District, Murmansk Oblast, Russia

Kupletskite-Kupletskite-(Cs) Series. The potassium analogue of Kupletskite-(Cs). Alters easily to porous black manganese oxides.

Unique IdentifiersHide

Mindat ID:

2290

Long-form identifier:

mindat:1:1:2290:9

Similar NamesHide

Kupletskite-(Cs)

A valid IMA mineral species

Cs₂NaMn₇²⁺Ti₂[Si₄O₁₂]₂O₂(OH)₄F

IMA Classification of KupletskiteHide

IMA status:

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

IMA Formula:

K₂NaMn²⁺₇Ti⁴⁺₂(Si₄O₁₂)₂O₂(OH)₄F

First published:

1956

Type description reference:

Semenov, E.I. (1956) Kupletskite - a new mineral of the astrophyllite group. Doklady Akademii Nauk SSSR: 108: 933-936 (in Russian).

Classification of KupletskiteHide

Strunz-mindat (2026):

9.DC.05

9 : SILICATES (Germanates)
D : Inosilicates
C : Inosilicates with branched 2-periodic single chains; Si₂O₆ + 2SiO₃ Si₄O₁₂

Dana 8th ed.:

69.1.1.2

69 : INOSILICATES Chains with Side Branches or Loops
1 : Chains with Side Branches or Loops with (P=2, and N=4, 2 branches)

Hey's CIM Ref.:

14.9.28

14 : Silicates not Containing Aluminum
9 : Silicates of Ti

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
Kpt	IMA–CNMNC	Warr, L.N. (2021). IMA–CNMNC approved mineral symbols. Mineralogical Magazine, 85(3), 291-320. doi:10.1180/mgm.2021.43
Kpt	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

Physical Properties of KupletskiteHide

Lustre:

Adamantine, Vitreous

Transparency:

Translucent

Colour:

Dark brown to black, brown, yellow

Comment:

dark brown to black when altered to manganese oxides.

Streak:

Brown

Hardness:

3 - 4 on Mohs scale

Cleavage:

Perfect
on [100]

Density:

3.20 - 3.36 g/cm³ (Measured) 3.274 g/cm³ (Calculated)

Optical Data of KupletskiteHide

Type:

Biaxial (-)

RI values:

n_α = 1.656 - 1.660 n_β = 1.699 - 1.702 n_γ = 1.731 - 1.734

2V:

Measured: 79° to 85°, Calculated: 78°

Max. Birefringence:

δ = 0.074 - 0.075
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:

Very High (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:

relatively weak

Pleochroism:

Visible

Comments:

Pleochroic with Z brown to X orange-yellow.

Chemistry of KupletskiteHide

Mindat Formula:

K₂NaMn²⁺₇Ti₂[Si₄O₁₂]₂O₂(OH)₄F

Element Weights:

Element	% weight
O	36.663 %
Mn	29.375 %
Si	17.162 %
Ti	7.313 %
K	5.973 %
Na	1.756 %
F	1.451 %
H	0.308 %

Calculated from ideal end-member formula.

Elements listed:

F, H, K, Mn, Na, O, Si, Ti - search for minerals with similar chemistry

Common Impurities:

Zr,Al,Mg,Ca,Ba,H₂O

Chemical AnalysisHide

Oxide wt%:

	1
Na₂O	3.52 %
K₂O	5.69 %
Rb₂O	0.37 %
Cs₂O	0.03 %
CaO	0.41 %
SrO	0.07 %
MgO	0.36 %
MnO	17.63 %
FeO	16.01 %
ZnO	0.47 %
Ce₂O₃	0.23 %
TiO₂	9.74 %
ZrO₂	1.07 %
Nb₂O₅	2.27 %
Ta₂O₅	0.09 %
SiO₂	34.92 %
Al₂O₃	0.10 %
F	1.65 %
H₂O	2.52 %
O=F	-0.69 %
Total:	96.46 %

Sample references:

ID	Locality	Reference	Notes
1	Gjerdingselva, Lunner, Akershus, Norway	Piilonen, P. C., Lalonde, A. E., McDonald, A. M., Gault, R. A., Larsen, A. O. (2003) Insights into astrophyllite-group minerals. I. Nomenclature, composition and development of standardized general formula. The Canadian Mineralogist, 41 (1). 1-26 doi:10.2113/gscanmin.41.1.1

Crystallography of KupletskiteHide

Crystal System:

Triclinic

Class (H-M):

1 - Pinacoidal

Space Group:

Cell Parameters:

a = 5.3976 Å, b = 11.9431 Å, c = 11.7092 Å
α = 113.066°, β = 94.702°, γ = 103.086°

Ratio:

a:b:c = 0.452 : 1 : 0.98

Unit Cell V:

664.06 Å³ (Calculated from Unit Cell)

Morphology:

Lamellar masses; fine plates; lamellar and acicular crystals

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	Year	Locality	Temp (K)
0005820	Kupletskite	Piilonen P C, McDonald A M, Lalonde A E (2003) Insights into astrophyllite-group minerals II: Crystal chemistry The Canadian Mineralogist 41 27-54	2003	altered nepheline syenite pegmatite at Mont Saint-Hilaire, Quebec, Canada	293
0005817	Kupletskite	Piilonen P C, McDonald A M, Lalonde A E (2003) Insights into astrophyllite-group minerals II: Crystal chemistry The Canadian Mineralogist 41 27-54	2003	nepheline syenite pegmatite at Mont Saint-Hilaire, Quebec, Canada	293
0005816	Kupletskite	Piilonen P C, McDonald A M, Lalonde A E (2003) Insights into astrophyllite-group minerals II: Crystal chemistry The Canadian Mineralogist 41 27-54	2003	nepheline syenite pegmatite at Mont Saint-Hilaire, Quebec, Canada	293
0005815	Kupletskite	Piilonen P C, McDonald A M, Lalonde A E (2003) Insights into astrophyllite-group minerals II: Crystal chemistry The Canadian Mineralogist 41 27-54	2003	nepheline syenite pegmatite at Mont Saint-Hilaire, Quebec, Canada	293
0005814	Kupletskite	Piilonen P C, McDonald A M, Lalonde A E (2003) Insights into astrophyllite-group minerals II: Crystal chemistry The Canadian Mineralogist 41 27-54	2003	nepheline syenite pegmatite at Mont Saint-Hilaire, Quebec, Canada	293
0005813	Kupletskite	Piilonen P C, McDonald A M, Lalonde A E (2003) Insights into astrophyllite-group minerals II: Crystal chemistry The Canadian Mineralogist 41 27-54	2003	nepheline syenite pegmatite at Mont Saint-Hilaire, Quebec, Canada	293
0005812	Kupletskite	Piilonen P C, McDonald A M, Lalonde A E (2003) Insights into astrophyllite-group minerals II: Crystal chemistry The Canadian Mineralogist 41 27-54	2003	nepheline syenite pegmatite at Mont Saint-Hilaire, Quebec, Canada	293
0005811	Kupletskite	Piilonen P C, McDonald A M, Lalonde A E (2003) Insights into astrophyllite-group minerals II: Crystal chemistry The Canadian Mineralogist 41 27-54	2003	nepheline syenite pegmatite at Mont Saint-Hilaire, Quebec, Canada	293
0005810	Kupletskite	Piilonen P C, McDonald A M, Lalonde A E (2003) Insights into astrophyllite-group minerals II: Crystal chemistry The Canadian Mineralogist 41 27-54	2003	nepheline syenite pegmatite at Mont Saint-Hilaire, Quebec, Canada	293
0005808	Kupletskite	Piilonen P C, McDonald A M, Lalonde A E (2003) Insights into astrophyllite-group minerals II: Crystal chemistry The Canadian Mineralogist 41 27-54	2003	Lovozero massif, Kola Peninsula, Russia	293
0005807	Kupletskite	Piilonen P C, McDonald A M, Lalonde A E (2003) Insights into astrophyllite-group minerals II: Crystal chemistry The Canadian Mineralogist 41 27-54	2003	Lovozero massif, Kola Peninsula, Russia	293
0005804	Kupletskite	Piilonen P C, McDonald A M, Lalonde A E (2003) Insights into astrophyllite-group minerals II: Crystal chemistry The Canadian Mineralogist 41 27-54	2003	Gjerdingen intrusion, Norway	293
0006908	Kupletskite	Piilonen P C, McDonald A M, LaLonde A E (2001) Kupletskite polytypes from the Lovozero massif, Kola Peninsula, Russia: Kupletskite-1A and kupletskite-Ma2b2c European Journal of Mineralogy 13 973-984	2001	Lovozero massif, Kola Peninsula, Russia	293
0006907	Kupletskite	Piilonen P C, McDonald A M, LaLonde A E (2001) Kupletskite polytypes from the Lovozero massif, Kola Peninsula, Russia: Kupletskite-1A and kupletskite-Ma2b2c European Journal of Mineralogy 13 973-984	2001	Lovozero massif, Kola Peninsula, Russia	293

CIF Raw Data - click here to close

data_global
_chemical_name_mineral 'Kupletskite'
loop_
_publ_author_name
'Piilonen P C'
'McDonald A M'
'Lalonde A E'
_journal_name_full 'The Canadian Mineralogist'
_journal_volume 41 
_journal_year 2003
_journal_page_first 27
_journal_page_last 54
_publ_section_title
;
 Insights into astrophyllite-group minerals II: Crystal chemistry
 Sample: MSH38a
;
_database_code_amcsd 0005820
_chemical_compound_source 'altered nepheline syenite pegmatite at Mont Saint-Hilaire, Quebec, Canada'
_chemical_formula_sum 'Mn6.243 Na.772 (Ti1.574 Nb.426) Si8 K1.82 Ca.114 O30 F.5 H4'
_cell_length_a 5.4028
_cell_length_b 11.9178
_cell_length_c 11.7000
_cell_angle_alpha 113.036
_cell_angle_beta 94.671
_cell_angle_gamma 103.163
_cell_volume 662.729
_exptl_crystal_density_diffrn      3.181
_symmetry_space_group_name_H-M 'P -1'
loop_
_space_group_symop_operation_xyz
  'x,y,z'
  '-x,-y,-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
Mn(1)   0.85031   0.20574   0.47956   0.89700   0.01190
Na(1)   0.85031   0.20574   0.47956   0.10300   0.01190
Mn(2)   0.27958   0.06735   0.48803   0.99500   0.01310
Mn(3)   0.42231   0.35200   0.48492   0.98500   0.01320
Mn(4)   0.00000   0.50000   0.50000   0.48900   0.01150
Ti   0.07825   0.08504   0.19447   0.78700   0.01250
Nb   0.07825   0.08504   0.19447   0.21300   0.01250
Si(1)   0.67850   0.27211   0.23113   1.00000   0.01190
Si(2)   0.81320   0.54620   0.25257   1.00000   0.01400
Si(3)   0.37830   0.67446   0.25518   1.00000   0.01410
Si(4)   0.50580   0.93099   0.23521   1.00000   0.01180
K   0.13650   0.26790   0.99580   0.91000   0.05270
Na   0.13650   0.26790   0.99580   0.09000   0.05270
Na   0.50000   0.00000   0.00000   0.38600   0.02560
Ca   0.50000   0.00000   0.00000   0.11400   0.02560
O(1)   0.72650   0.31820   0.38350   1.00000   0.01440
O(2)   0.14750   0.16030   0.36990   1.00000   0.01540
O(3)   0.12950   0.39240   0.59480   1.00000   0.01380
O-H(4)   0.29700   0.46240   0.39980   1.00000   0.01770
O-H(5)   0.99240   0.11780   0.59380   1.00000   0.01770
O(6)   0.55920   0.25790   0.59150   1.00000   0.01460
O(7)   0.57280   0.01420   0.38830   1.00000   0.01400
O(8)   0.07340   0.59090   0.19990   1.00000   0.02860
O(9)   0.24940   0.04080   0.82810   1.00000   0.03540
O(10)   0.42970   0.41460   0.80050   1.00000   0.02860
O(11)   0.12590   0.80680   0.83150   1.00000   0.03640
O(12)   0.26420   0.95670   0.17110   1.00000   0.03640
O(13)   0.26810   0.60700   0.80710   1.00000   0.02660
O(14)   0.57200   0.22170   0.80320   1.00000   0.02770
O(15)   0.38430   0.19100   0.16740   1.00000   0.03640
F(16)   0.00000   0.00000   0.00000   0.50000   0.02170
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
Mn(1) 0.01080 0.01110 0.01410 0.00330 0.00300 0.00530
Na(1) 0.01080 0.01110 0.01410 0.00330 0.00300 0.00530
Mn(2) 0.01150 0.01310 0.01620 0.00430 0.00470 0.00690
Mn(3) 0.01230 0.01270 0.01670 0.00500 0.00510 0.00720
Mn(4) 0.01010 0.00990 0.01370 0.00280 0.00190 0.00420
Ti 0.00900 0.01250 0.01680 0.00390 0.00350 0.00630
Nb 0.00900 0.01250 0.01680 0.00390 0.00350 0.00630
Si(1) 0.01300 0.01010 0.01160 0.00300 0.00230 0.00360
Si(2) 0.01690 0.01050 0.01350 0.00280 0.00230 0.00470
Si(3) 0.01710 0.01180 0.01370 0.00370 0.00280 0.00600
Si(4) 0.01350 0.01150 0.01120 0.00360 0.00270 0.00550
K 0.07100 0.04910 0.03190 0.01300 0.00670 0.01360
Na 0.07100 0.04910 0.03190 0.01300 0.00670 0.01360
Na 0.03940 0.02040 0.01380 0.00700 0.00300 0.00530
Ca 0.03940 0.02040 0.01380 0.00700 0.00300 0.00530
O(1) 0.01460 0.01470 0.01150 0.00280 0.00180 0.00380
O(2) 0.01590 0.01490 0.01220 0.00340 0.00260 0.00290
O(3) 0.01500 0.01360 0.01170 0.00340 0.00240 0.00450
O-H(4) 0.01810 0.01820 0.01650 0.00600 0.00410 0.00620
O-H(5) 0.01910 0.01790 0.01650 0.00710 0.00460 0.00640
O(6) 0.01680 0.01420 0.01220 0.00410 0.00260 0.00510
O(7) 0.01600 0.01350 0.01130 0.00450 0.00180 0.00390
O(8) 0.02640 0.03130 0.01780 -0.00410 0.00400 0.00670
O(9) 0.02890 0.03770 0.01900 -0.01240 0.01070 0.00170
O(10) 0.03950 0.03080 0.01800 0.02180 0.00450 0.00660
O(11) 0.05810 0.04790 0.02140 0.04580 0.01630 0.01460
O(12) 0.04750 0.03620 0.02120 0.03140 -0.00870 0.00000
O(13) 0.04780 0.01110 0.01770 0.00330 0.00370 0.00600
O(14) 0.04990 0.01370 0.01890 0.00530 0.00650 0.00840
O(15) 0.02320 0.04870 0.02180 -0.01780 -0.00350 0.01620
F(16) 0.02280 0.02300 0.01530 0.00480 0.00170 0.00530

X-Ray Powder DiffractionHide

Powder Diffraction Data:

d-spacing	Intensity
3.505 Å	(8)
2.642 Å	(8)
2.573 Å	(4)
2.099 Å	(3)
1.732 Å	(3)
3.249 Å	(1)
2.998 Å	(1)

Geological EnvironmentHide

Paragenetic Mode(s):

Paragenetic Mode	Earliest Age (Ga)
Stage 4b: Highly evolved igneous rocks	>3.0
35 : Ultra-alkali and agpaitic igneous rocks

Type Occurrence of KupletskiteHide

Co-Type Localities:

ⓘ Kuivchorr Mountain, Lovozersky District, Murmansk Oblast, Russia
ⓘ Pegmatite No. 47, Lepkhe-Nel'm Mt, Seidozero Lake, Lovozersky District, Murmansk Oblast, Russia

General Appearance of Type Material:

In lamellar masses up to 5 X 3 X 1 cm, consisting of individual plates with perfect cleavage

Geological Setting of Type Material:

In natrolite central part of nepheline syenite pegmatites

Associated Minerals at Type Locality:

Aegirine

Eudialyte

'Manganese-bearing Pectolite'

Natrolite

Neptunite

Reference:

Semenov, E.I. (1956) Kupletskite - a new mineral of the astrophyllite group. Doklady Akademii Nauk SSSR: 108: 933-936 (in Russian).

Other Language Names for KupletskiteHide

Dutch:Kupletskiet

German:Kupletskit

Russian:Куплетскит

Simplified Chinese:锰星叶石

Spanish:Kupletskita

Traditional Chinese:錳星葉石

Varieties of KupletskiteHide

Zinc-bearing Kupletskite

Relationship of Kupletskite to other SpeciesHide

Member of:

Kupletskite Group > Astrophyllite Supergroup

Other Members of Kupletskite Group:

Heyerdahlite	Na₂NaMn²⁺₇Ti₂[Si₄O₁₂]₂O₂(OH)₄F(H₂O)₂	Tric. 1 : P1
Kupletskite-(Cs)	Cs₂NaMn²⁺₇Ti₂[Si₄O₁₂]₂O₂(OH)₄F	Tric. 1 : P1
Laverovite	K₂NaMn²⁺₇Zr₂[Si₄O₁₂]₂O₂(OH)₄F	Tric. 1 : P1
Niobokupletskite	K₂NaMn²⁺₇(NbTi)[Si₄O₁₂]₂O₂(OH)₄O	Tric. 1 : P1

Forms a series with:

Astrophyllite	Astrophyllite-Kupletskite Series
Kupletskite-(Cs)	Kupletskite-Kupletskite-(Cs) Series

Common AssociatesHide

Associations Based on Photo Data:

56 photos of Kupletskite associated with Aegirine	NaFe³⁺Si₂O₆
27 photos of Kupletskite associated with Analcime	Na(AlSi₂O₆) · H₂O
16 photos of Kupletskite associated with Microcline	K(AlSi₃O₈)
15 photos of Kupletskite associated with Natrolite	Na₂Al₂Si₃O₁₀ · 2H₂O
14 photos of Kupletskite associated with Catapleiite	Na₂Zr(Si₃O₉) · 2H₂O
11 photos of Kupletskite associated with Albite	Na(AlSi₃O₈)
10 photos of Kupletskite associated with Pectolite	NaCa₂Si₃O₈(OH)
10 photos of Kupletskite associated with Genthelvite	Be₃Zn₄(SiO₄)₃S
10 photos of Kupletskite associated with Serandite	NaMn²⁺₂Si₃O₈(OH)
9 photos of Kupletskite associated with Monazite-(Ce)	Ce(PO₄)

Related Minerals - Strunz-mindat Grouping Hide

9.DC.	Bulgakite	Li₂CaFe²⁺₇Ti₂[Si₄O₁₂]₂O₂(OH)₄O(H₂O)₂	Tric. 1 : P1
9.DC.05	Devitoite	Ba₄Ba₂Fe²⁺₇Fe³⁺₂[Si₄O₁₂]₂[PO₄]₂[CO₃]O₂(OH)₄◻₂	Tric. 1 : P1
9.DC.05	Zircophyllite	K₂NaFe²⁺₇Zr₂[Si₄O₁₂]₂O₂(OH)₄F	Tric.
9.DC.05	Nalivkinite	Li₂NaFe²⁺₇Ti₂[Si₄O₁₂]₂O₂(OH)₄F(H₂O)₂	Tric. 1 : P1
9.DC.05	Sveinbergeite	(H₂O)₂[Ca(H₂O)](Fe²⁺₆Fe³⁺)Ti₂[Si₄O₁₂]₂O₂(OH)₄[(OH)(H₂O)]	Tric. 1 : P1
9.DC.05	Niobophyllite	K₂NaFe²⁺₇(NbTi)[Si₄O₁₂]₂O₂(OH)₄O	Tric.
9.DC.05	Heyerdahlite	Na₂NaMn²⁺₇Ti₂[Si₄O₁₂]₂O₂(OH)₄F(H₂O)₂	Tric. 1 : P1
9.DC.05	Tarbagataite	(K◻)CaFe²⁺₇Ti₂[Si₄O₁₂]₂O₂(OH)₄(OH)	Tric. 1 : P1
9.DC.05	Astrophyllite	K₂NaFe²⁺₇Ti₂[Si₄O₁₂]₂O₂(OH)₄F	Tric. 1 : P1
9.DC.05	'Hydroastrophyllite'	[H₃O]⁺₂CaFe²⁺₇Ti₂[Si₄O₁₂]₂O₂(OH)₄O	Tric.
9.DC.05	Lobanovite	K₂Na(Fe²⁺₄Mg₂Na)Ti₂[Si₄O₁₂]₂O₂(OH)₄◻	Mon. 2/m : B2/m
9.DC.05	Niobokupletskite	K₂NaMn²⁺₇(NbTi)[Si₄O₁₂]₂O₂(OH)₄O	Tric. 1 : P1
9.DC.05	Kupletskite-(Cs)	Cs₂NaMn²⁺₇Ti₂[Si₄O₁₂]₂O₂(OH)₄F	Tric. 1 : P1
9.DC.05	Laverovite	K₂NaMn²⁺₇Zr₂[Si₄O₁₂]₂O₂(OH)₄F	Tric. 1 : P1

RadioactivityHide

Radioactivity:

Element	% Content	Activity (Bq/kg)	Radiation Type
Uranium (U)	0.0000%	0	α, β, γ
Thorium (Th)	0.0000%	0	α, β, γ
Potassium (K)	5.9729%	1,852	β, γ

For comparison:

Banana: ~15 Bq per fruit
Granite: 1,000–3,000 Bq/kg
EU exemption limit: 10,000 Bq/kg

Note: Risk is shown relative to daily recommended maximum exposure to non-background radiation of 1000 µSv/year. Note that natural background radiation averages around 2400 µSv/year so in reality these risks are probably extremely overstated! With infrequent handling and safe storage natural radioactive minerals do not usually pose much risk.

Interactive Simulator:

Note: The mass selector refers to the mass of radioactive mineral present, not the full specimen, also be aware that the matrix may also be radioactive, possibly more radioactive than this mineral!

Mass of radioactive mineral:

Shielding material:

Activity: –

Distance	Dose rate	Risk
1 cm
10 cm
1 m

The external dose rate (D) from a radioactive mineral is estimated by summing the gamma radiation contributions from its Uranium, Thorium, and Potassium content, disregarding daughter-product which may have a significant effect in some cases (eg 'pitchblende'). This involves multiplying the activity (A, in Bq) of each element by its specific gamma ray constant (Γ), which accounts for its unique gamma emissions. The total unshielded dose at 1 cm is then scaled by the square of the distance (r, in cm) and multiplied by a shielding factor (μ_shield). This calculation provides a 'worst-case' or 'maximum risk' estimate because it assumes the sample is a point source and entirely neglects any self-shielding where radiation is absorbed within the mineral itself, meaning actual doses will typically be lower. The resulting dose rate (D) is expressed in microsieverts per hour (μSv/h).

D = ((A_U × Γ_U) + (A_Th × Γ_Th) + (A_K × Γ_K)) / r² × μ_shield

Other InformationHide

Notes:

Melts easily before the blowpipe to a weakly magnetic dark
globule.

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 KupletskiteHide

mindat.org URL:

https://www.mindat.org/min-2290.html
Please feel free to link to this page.

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Look for Kupletskite in the Rock H. Currier Digital Library

External Links:

Look for Kupletskite on Webmineral

Look for Kupletskite on Wikipedia

Look for Kupletskite on Mineralien Atlas

Raman and XRD data at RRUFF project

References and PDF downloads at RRUFF project

American Mineralogist Crystal Structure Database

Handbook of Mineralogy page PDF

Mineral Dealers:

Buy from D. Joyce minerals

References for KupletskiteHide

Reference List:

Scientia Sinica: 13(7): 1180-1183 (abstract in Chemical Abstracts: 64: 7460).

Semenov, E.I. (1956) Kupletskite - a new mineral of the astrophyllite group. Doklady Akademii Nauk SSSR: 108: 933-936 (in Russian).

Fleischer, M. (1957) New mineral names. American Mineralogist, 42 (1-2). 117-124

Christiansen, Claes C.; Johnsen, Ole; Ståhl, Kenny (1998) Crystal structure of kupletskite from the Kangerdlugssuaq intrusion, East Greenland. Neues Jahrbuch für Mineralogie - Monatshefte, 1998 (6). 253-264

Piilonen, Paula C., McDonald, Andrew M., Lalonde, André e E. (2001) Kupletskite polytypes from the Lovozero massif, Kola Peninsula, Russia: Kupletskite-1A and kupletskite-Ma2b2c. European Journal of Mineralogy, 13 (5) 973-984 doi:10.1127/0935-1221/2001/0013/0973

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

Piilonen, P. C., Lalonde, A. E., McDonald, A. M., Gault, R. A., Larsen, A. O. (2003) Insights into astrophyllite-group minerals. I. Nomenclature, composition and development of standardized general formula. The Canadian Mineralogist, 41 (1). 1-26 doi:10.2113/gscanmin.41.1.1

Sokolova, Elena, Cámara, Fernando, Hawthorne, Frank C., Ciriotti, Marco E. (2017) The astrophyllite supergroup: nomenclature and classification. Mineralogical Magazine, 81 (1) 143-153 doi:10.1180/minmag.2016.080.077

Zhitova, Elena S.; Zolotarev, Andrey A.; Sheveleva, Rezeda M.; Shendrik, Roman Yu.; Hawthorne, Frank C.; Nuzhdaev, Anton A.; Vlasenko, Natalia S.; Kaneva, Ekaterina V.; Yakovenchuk, Victor N. (2025) Heat-Induced Mn2+ and Fe2+ Oxidation in Heterophyllosilicates: Kupletskite and Kupletskite-(Cs). Minerals, 15 (6). doi:10.3390/min15060587

Localities for KupletskiteHide

Showing 45 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.


Brazil
Minas Gerais Poços de Caldas ⓘ Bortolan quarry	Atencio et al. (1999)
ⓘ Poços de Caldas alkaline complex	Gomes et al. (2023)
Rio de Janeiro Itatiaia ⓘ Itatiaia alkaline complex	Rosa et al. (2018)

Canada
Québec Montérégie La Vallée-du-Richelieu RCM Mont Saint-Hilaire ⓘ Poudrette quarry (De-Mix quarry; Demix quarry; Uni-Mix quarry; Carrière Mont Saint-Hilaire; MSH)	Grice (1989) +4 other references

China
Sichuan Liangshan Yi Huili County ⓘ Baicao Nb-Ta deposit	Falu Liu and Jiahui Chen (1982)

Greenland
Kujalleq Ilímaussaq complex ⓘ Kangerluarsuk Fjord	Christiansen et al. (1998)
Northeast Greenland National Park ⓘ Werner Bjerge Complex	Brooks et al. (1982, June) +1 other reference
Sermersooq Kangerlussuaq Fjord Amdrup Firth ⓘ Kentbrooksite occurrence	Perchiazzi et al. (2000)
Kangerlussuaq Fjord (Søndre Strømfjord) ⓘ Kangerlussuaq Alkaline Complex	Brooks (2011)

Guinea
Conakry Region ⓘ Los Archipelago (Los Islands)	Gerasimovskii et al. (Guinea) +8 other references
ⓘ Rouma Island	Moreau et al. (1996) +2 other references

Kazakhstan
Abai Region Tarbagatai Range Akzhaylyautas Mts (Akzhailyautas Mts; Akjaylautas Mts; Akzhalautas Mts) ⓘ Verkhnee Espe Massif (Verkhnee Espe deposit)	Stepanov et al. (2012)

Malawi
Southern Region Machinga ⓘ Junguni Hill	Bloomfield (1965) +5 other references

Morocco
Drâa-Tafilalet Region Midelt Province Midelt Cercle Aït Oufella Caïdat Amersid ⓘ Jebel Bou-Agrao	Khadem Allah (1993)

Norway
Akershus Lunner ⓘ Gjerdingselva	Raade (1981) +2 other references
Nittedal ⓘ Delebekken Quarry ?	Kvamsdal (2018)
Telemark Porsgrunn Siktesøya ⓘ Brønnebukta	Larsen et al. (2010)
Vestfold Larvik Commune Hedrum Lågendalen ⓘ Bratthagen 1	Larsen et al. (2010) +1 other reference
ⓘ Bratthagen 2	Berge (n.d.)
Lysebo ⓘ Lysebo roadcut	Larsen et al. (2010)

Romania
Harghita County ⓘ Ditrău Complex	Hirtopanu (2006)

Russia
Buryatia Mama River Basin Maigunda River ⓘ Burpala alkaline massif	Pekov (1998) +1 other reference
Murmansk Oblast Kihlman Mountain ⓘ Khibiny Station	Pavel M. Kartashov (n.d.)
ⓘ Koashva Mt	PEKOV et al. (2013)
ⓘ Kukisvumchorr Mt	Pekov et al. (2004)
Lovozersky District ⓘ Karnasurt Mountain	Pakhomovsky et al. (2014)
ⓘ Kuivchorr Mountain (TL)	World of Stones 95: 5-6 +3 other references
Seidozero Lake ⓘ Lepkhe-Nel'm Mt	Pekov (2003)
ⓘ Pegmatite No. 47 (TL)	Semenov E.I. (1972) +3 other references
ⓘ Maly Mannepakhk Mt (Malyi Mannepakhk Mt)
Yukspor Mountain ⓘ Hackman Valley	Pavel M. Kartashov (n.d.)
ⓘ Lovchorrite Mine	Pekov et al. (2003)
Tuva Sangilen Upland ⓘ Korgeredaba alkaline massif	Kapustin et al. (1965)

South Africa
North West Bojanala Platinum District Municipality Moses Kotane Local Municipality ⓘ Pilanesberg Alkaline Ring Complex	Mitchell et al. (2004) +1 other reference

Tajikistan
Districts of Republican Subordination ⓘ Dara-i-Pioz Massif	Agakhanov et al. (2017)

Ukraine
Donetsk Oblast ⓘ Oktyabr'skii Massif	[var: Zinc-bearing Kupletskite] Sharygin (2015)
Volnovakha Raion ⓘ Dmitrievskii quarry	Pekov I.V. et al. (Priazovie) +1 other reference
Mazurovskoe Zr deposit ⓘ Donskoy quarry	Pavel M. Kartashov (n.d.)

USA
Arkansas Hot Spring County Magnet Cove ⓘ Diamond Jo Quarry	Smith (1988)
ⓘ Jones Mill Quarry	H. Barwood - unpublished (2010)
Pulaski County Little Rock ⓘ Granite Mountain area	Smith (1988) +1 other reference
ⓘ Big Rock Quarry (3M Quarry; Arch Street Pike Quarry)	Smith (1988) +2 other references
ⓘ Holiday Inn Quarry	Ron Layton Collection
New Mexico Colfax County Springer Point of Rocks Mesa ⓘ Point of Rocks Quarry	Rocks & Min.:60:229. +1 other reference

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Kupletskite

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