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Galuskinite

A valid IMA mineral species
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09448610014963843347836.jpg
Galuskinite

Birkhin gabbro massif, Narin-Kunta, Irkutsk Oblast, Russia
01494720017056143091953.jpg
Galuskinite

Birkhin gabbro massif, Narin-Kunta, Irkutsk Oblast, Russia
01513520014977989728241.jpg
Galuskinite

Birkhin gabbro massif, Narin-Kunta, Irkutsk Oblast, Russia
01494720017056143091953.jpg
Galuskinite

Birkhin gabbro massif, Narin-Kunta, Irkutsk Oblast, Russia
05775890014964467473799.jpg
Galuskinite

Birkhin gabbro massif, Narin-Kunta, Irkutsk Oblast, Russia
01494720017056143091953.jpg
Galuskinite

Birkhin gabbro massif, Narin-Kunta, Irkutsk Oblast, Russia
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About GaluskiniteHide

07077220014977220047421.jpg
Irina and Evgeny Galuskin
Formula:
Ca7(SiO4)3(CO3)
Colour:
Colourless, white, pale grey
Lustre:
Vitreous
Hardness:
5
Specific Gravity:
3.096 (Calculated)
Crystal System:
Monoclinic
Name:
Named in honour of the Russian mineralogists Irina Olegovna Galuskina (born 1961) and Evgeny Vadimovich Galuskin (born 1960), who work at the Faculty of Earth Sciences, University of Silesia, Sosnowiec, Poland.
This page provides mineralogical data about Galuskinite.


Unique IdentifiersHide

Mindat ID:
41778
Long-form identifier:
mindat:1:1:41778:3
GUID
(UUID V4):
7441a310-914c-430b-9969-dd833c6b807b

IMA Classification of GaluskiniteHide

Classification of GaluskiniteHide

Strunz-mindat (2024):
9.AH.15

9 : SILICATES (Germanates)
A : Nesosilicates
H : Nesosilicates with CO3, SO4, PO4, etc.

Mineral SymbolsHide

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

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

Physical Properties of GaluskiniteHide

Lustre:
Vitreous
Transparency:
Transparent
Colour:
Colourless, white, pale grey
Streak:
White
Hardness:
5 on Mohs scale
Hardness:
VHN20=440 kg/mm2 - Vickers
Tenacity:
Brittle
Cleavage:
Imperfect/Fair
on {001}, {100} and {010}
Parting:
Perfect on {001}
Fracture:
Irregular/Uneven
Density:
3.096 g/cm3 (Calculated)

Optical Data of GaluskiniteHide

Type:
Biaxial (-)
RI values:
nα = 1.660(3) nβ = 1.669(3) nγ = 1.676(3)
2V:
Measured: 60° (5), Calculated: 82.4°
Birefringence:
0.016
Max Birefringence:
δ = 0.016
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
Surface Relief:
Moderate
Pleochroism:
Non-pleochroic

Chemistry of GaluskiniteHide

Mindat Formula:
Ca7(SiO4)3(CO3)
Elements listed:
C, Ca, O, Si - search for minerals with similar chemistry

Crystallography of GaluskiniteHide

Crystal System:
Monoclinic
Class (H-M):
2/m - Prismatic
Space Group:
P21/b
Setting:
P1 21/c 1
Cell Parameters:
a = 18.7872(2) Å, b = 6.7244(2) Å, c = 10.4673(2) Å
β = 90.788(1)°
Ratio:
a:b:c = 2.794 : 1 : 1.557
Unit Cell V:
1322.24 ų
Z:
4
Twinning:
Simple and polysynthetic twins on {001}.

Crystal StructureHide

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IDSpeciesReferenceLinkYearLocalityPressure (GPa)Temp (K)
0018535GaluskiniteLazic B, Armbruster T, Savelyeva V B, Zadov A E, Pertsev N N, Dzierzanowski P (2011) Galuskinite, Ca7(SiO4)3(CO3), a new skarn mineral from the Birkhin gabbro massif, Eastern Siberia, Russia Mineralogical Magazine 75 2631-26482011Birkhin gabbro massif, Eastern Siberia, Russia0293
CIF Raw Data - click here to close

X-Ray Powder DiffractionHide

Powder Diffraction Data:
d-spacingIntensity
18.785 Å(56)
2.7338 Å(98)
2.7141 Å(78)
2.7032 Å(100)
2.7030 Å(85)
2.6706 Å(100)
2.6166 Å(82)
1.9251 Å(53)

Geological EnvironmentHide

Paragenetic Mode(s):
Paragenetic ModeEarliest Age (Ga)
High-𝑇 alteration and/or metamorphism
31 : Thermally altered carbonate, phosphate, and iron formations

Type Occurrence of GaluskiniteHide

Type Locality:
ⓘ Birkhin gabbro massif (Ozernovskii), Narin-Kunta, Irkutsk Oblast, Russia
General Appearance of Type Material:
Heavily fractured and twinned grains up to 0.5 mm in size.
Place of Conservation of Type Material:
A.E. Fersman Mineralogical Museum of the Russian Academy of Sciences, Moscow, Russia: 4050/1; Natural History Museum, Berne, Switzerland: NMBE-40811.
Geological Setting of Type Material:
It was found in altered silicate-carbonate xenoliths a few metres in diameter in the Birkhin gabbro massif. Galuskinite occurs in thin veins cutting calcio-olivine skarn with relict larnite and is a retrograde product of skarn alteration.
Associated Minerals at Type Locality:
PavlovskyiteLarniteDellaiteCalcio-olivine
Reference:
Lazic, B., Armbruster, T., Savelyeva, V.B., Zadov, A.E., Pertsev, N.N. and Dzierzanowski, P. (2011) Galuskinite, Ca7(SiO4)3(CO3), a new skarn mineral from the Birkhin gabbro massif, Eastern Siberia, Russia. Mineralogical Magazine: 75: 2631-2648.
Download:
https://rruff.info/rruff_1.0/uploads/MM75_2631.pdf

Synonyms of GaluskiniteHide

Related Minerals - Strunz-mindat GroupingHide

9.AH.Fluorbritholite-(Nd)Ca2Nd3(SiO4)3FHex. 6/m : P63/m
9.AH.05Iimoriite-(Y)Y2[SiO4][CO3]Tric. 1 : P1
9.AH.10Tundrite-(Ce)Na2Ce2Ti(SiO4)(CO3)2O2Tric. 1 : P1
9.AH.10Tundrite-(Nd)Na2(Nd,Ce)2Ti(SiO4)(CO3)2O2
9.AH.15SpurriteCa5(SiO4)2(CO3)Mon. 2/m : P21/b
9.AH.20TernesiteCa5(SiO4)2(SO4)Orth. mmm (2/m 2/m 2/m) : Pnma
9.AH.20SilicocarnotiteCa5[(SiO4)(PO4)](PO4)Orth. mmm (2/m 2/m 2/m) : Pnma
9.AH.25Britholite-(Ce)(Ce,Ca)5(SiO4)3OHHex. 6/m : P63/m
9.AH.25Britholite-(Y)(Y,Ca)5(SiO4)3OHHex. 6/m : P63/m
9.AH.25ChlorellestaditeCa5(SiO4)1.5(SO4)1.5ClHex. 6/m : P63/m
9.AH.25Fluorbritholite-(Ce)(Ce,Ca)5(SiO4)3FHex. 6/m : P63/m
9.AH.25FluorellestaditeCa5(SiO4)1.5(SO4)1.5FHex. 6/m : P63/m
9.AH.25HydroxylellestaditeCa5(SiO4)1.5(SO4)1.5(OH)Hex. 6/mmm (6/m 2/m 2/m) : P63/mcm
9.AH.25MattheddleitePb5(SiO4)1.5(SO4)1.5(Cl,OH)Hex. 6/m : P63/m
9.AH.25Tritomite-(Ce)Ce5(SiO4,BO4)3(OH,O)
9.AH.25Tritomite-(Y)Y5(SiO4,BO4)3(O,OH,F)
9.AH.25Fluorcalciobritholite(Ca,REE)5(SiO4,PO4)3FHex. 6/m : P63/m
9.AH.25Fluorbritholite-(Y)(Y,Ca)5(SiO4)3FHex. 6/m : P63/m
9.AH.25Britholite-(La)Ca2(La,Ce,Ca)3(SiO4,PO4)3(OH,F)
9.AH.25Calciobritholite(Ca,Y)5(SiO4,PO4)3(OH)
9.AH.35NabimusaiteKCa12(SiO4)4(SO4)2O2FTrig. 3m (3 2/m) : R3m
9.AH.35DargaiteBaCa12(SiO4)4(SO4)2O3Trig. 3m : R3m
9.AH.40ZadoviteBaCa6[(SiO4)(PO4)](PO4)2FTrig. 3m : R3m
9.AH.40GazeeviteBaCa6(SiO4)2(SO4)2OTrig. 3m (3 2/m) : R3m
9.AH.40StracheriteBaCa6(SiO4)2[(PO4)(CO3)]2FTrig. 3m (3 2/m) : R3m
9.AH.45FlamiteCa8-x(Na,K)x(SiO4)4-x(PO4)xOrth. mm2
9.AH.50ByzantieviteBa5(Ca,REE,Y)22(Ti,Nb)18(SiO4)4[(PO4),(SiO4)]4(BO3)9O22[(OH),F]43(H2O)1.5Trig. 3 : R3
9.AH.55Greenwoodite(Ba,V3+O)2V3+9(Fe3+,Fe2+)2Si2O22Trig. 3m (3 2/m) : P3m1
9.AH.60Kihlmanite-(Ce)Ce2TiO2(SiO4)(HCO3)2(H2O)Tric. 1 : P1
9.AH.65TsangpoiteCa5(PO4)2(SiO4)Hex.
9.AH.70Enalite(Th,REE,Al) [(PO4),(SiO4),(OH)]Tet.

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 GaluskiniteHide

References for GaluskiniteHide

Localities for GaluskiniteHide

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.

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.
Russia (TL)
 
  • Irkutsk Oblast
    • Narin-Kunta
Armbruster et al. (2011) +2 other references
  • Kabardino-Balkaria
    • Baksan Valley
Galuskin et al. (2015)
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