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Genplesite

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Formula:
Ca3Sn(SO4)2(OH)6·3H2O
Colour:
colorless
Lustre:
Vitreous
Hardness:
3
Specific Gravity:
2.78
Crystal System:
Hexagonal
Name:
Genplesite is named in honour of Gennadiy N. Plesin (b. 1963), a mine surveyor at the Oktyabr'sky mine and an amateur mineralogist who found the mineral.
The Sn analogue of despujolsite and schaurteite. Also the Ca-Sn analogue of fleischerite.

Currently the only natural tin sulfate known. One of a few non-silicate oxysalts of tin, the other being tin-rich borates mengxianminite, nordenskiöldine, and tusionite.


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Classification of GenplesiteHide

IMA status:
Approved
Approval Year:
2014

Physical Properties of GenplesiteHide

Lustre:
Vitreous
Transparency:
Transparent
Colour:
colorless
Hardness:
3 on Mohs scale
Tenacity:
Brittle
Cleavage:
None Observed
Fracture:
Conchoidal
Density:
2.78 g/cm3 (Measured)    2.773 g/cm3 (Calculated)

Optical Data of GenplesiteHide

Type:
Uniaxial (-)
RI values:
nω = 1.597() nε = 1.572(2)
Max Birefringence:
δ = 0.025
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
Surface Relief:
Moderate

Chemical Properties of GenplesiteHide

Formula:
Ca3Sn(SO4)2(OH)6·3H2O
IMA Formula:
Ca3Sn(SO4)2(OH)6 · 3H2O
Elements listed:
Ca, H, O, S, Sn - search for minerals with similar chemistry

Crystallography of GenplesiteHide

Crystal System:
Hexagonal
Class (H-M):
6/mmm (6/m 2/m 2/m) - Dihexagonal Dipyramidal
Space Group:
P63/mmc
Setting:
P63/mmc
Cell Parameters:
a = 8.5139(2) Å, c = 11.1408(3) Å
Ratio:
a:c = 1 : 1.309
Unit Cell V:
699.37 ų (Calculated from Unit Cell)
Z:
2

X-Ray Powder DiffractionHide

Powder Diffraction Data:
d-spacingIntensity
7.38(68)
4.259(46)
3.503(15)
3.383(100)
2.616(13)
2.493(14)
2.249(14)
2.130(17)
Comments:
From Type Description.

Occurrences of GenplesiteHide

Paragenetic Mode(s):

Type Occurrence of GenplesiteHide

Type Locality:
ⓘ No. 1 shaft, Oktyabrsky Mine (Oktyabr'skoe Cu-Ni deposit; Oktyabr'skoye; Oktyabr'sky), Talnakh Cu-Ni Deposit, Noril'sk, Putoran Plateau, Taimyr Peninsula, Taymyrskiy Autonomous Okrug, Krasnoyarsk Krai, Russia
General Appearance of Type Material:
equant, short prismatic or thick tabular hexagonal crystals up to 0.5 mm and crystal clusters up to 0.6 x 1.2 mm.
Place of Conservation of Type Material:
Type material is deposited in the collections of the Fersman Mineralogical Museum of the Russian Academy of Sciences, Moscow, Russia, registration number 4566/1
Geological Setting of Type Material:
found in cavities in massive chalcopyrite
Associated Minerals at Type Locality:
PectoliteGreenaliteFluorapatiteFerro-actinoliteChamosite
Calcite

Synonyms of GenplesiteHide

Relationship of Genplesite to other SpeciesHide

Member of:
Fleischerite Group
Other Members of this group:
DespujolsiteCa3Mn4+(SO4)2(OH)6 · 3H2OHex. 6 m2 : P62c
FleischeritePb3Ge(SO4)2(OH)6 · 3H2OHex. 6/mmm (6/m 2/m 2/m) : P63/mmc
MallestigitePb3Sb5+(SO4)(AsO4)(OH)6 · 3H2OHex. 6 : P63
SchaurteiteCa3Ge(SO4)2(OH)6 · 4H2OHex. 6/mmm (6/m 2/m 2/m) : P63/mmc
Unnamed (Ba-Sb Silicate-Sulphate-Hydroxide-Hydrate)Ba3Sb5+[(Si,S)O3(OH)]2(OH,O)6 · 3H2O Trig. 3 : P3

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.

References for GenplesiteHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Pekov, I.V., Sereda, E.V., Zubkova, N.V., Yapaskurt, V.O., Chukanov, N.V., Britvin, S.N., Lykova, I.S. and Pushcharovsky, D.Y. (2014) Genplesite, IMA 2014-034. CNMNC Newsletter No. 21, August 2014, page 803; Mineralogical Magazine, 78, 797-804.
Pekov, I. V., Sereda, E. V., Zubkova, N. V., Yapaskurt, V. O., Chukanov, N. V., Britvin, S. N., ... & Pushcharovsky, D. Y. (2018). Genplesite, Ca3Sn (SO4) 2 (OH) 6∙ 3H2O, a new mineral of the fleischerite group: first occurrence of a tin sulfate in nature. European Journal of Mineralogy.

Internet Links for GenplesiteHide

Localities for GenplesiteHide

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 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 (eg from pseudomorphs.)

All localities listed without proper references should be considered as questionable.
Russia (TL)
 
  • Krasnoyarsk Krai
    • Taymyrskiy Autonomous Okrug
      • Taimyr Peninsula
        • Putoran Plateau
          • Noril'sk
            • Talnakh Cu-Ni Deposit
              • Oktyabrsky Mine (Oktyabr'skoe Cu-Ni deposit; Oktyabr'skoye; Oktyabr'sky)
Pekov, I.V., Sereda, E.V., Zubkova, N.V., Yapaskurt, V.O., Chukanov, N.V., Britvin, S.N., Lykova, I.S. and Pushcharovsky, D.Y. (2014) Genplesite, IMA 2014-034. CNMNC Newsletter No. 21, August 2014, page 803; Mineralogical Magazine, 78, 797-804.
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