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
Member of:
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.
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.
Classification of Genplesite
Approved
Approval Year:
2014
Physical Properties of Genplesite
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 Genplesite
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.
and does not take into account mineral colouration.
Surface Relief:
Moderate
Chemical Properties of Genplesite
Formula:
Ca3Sn(SO4)2(OH)6·3H2O
IMA Formula:
Ca3Sn(SO4)2(OH)6 · 3H2O
Crystallography of Genplesite
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 Diffraction
Powder Diffraction Data:
d-spacing | Intensity |
---|---|
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 Genplesite
Paragenetic Mode(s):
• Carbonate veins
Type Occurrence of Genplesite
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:
Synonyms of Genplesite
Relationship of Genplesite to other Species
Member of:
Other Members of this group:
Despujolsite | Ca3Mn4+(SO4)2(OH)6 · 3H2O | Hex. 6 m2 : P62c |
Fleischerite | Pb3Ge(SO4)2(OH)6 · 3H2O | Hex. 6/mmm (6/m 2/m 2/m) : P63/mmc |
Mallestigite | Pb3Sb5+(SO4)(AsO4)(OH)6 · 3H2O | Hex. 6 : P63 |
Schaurteite | Ca3Ge(SO4)2(OH)6 · 4H2O | Hex. 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 Information
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 Genplesite
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 Genplesite
mindat.org URL:
https://www.mindat.org/min-46176.html
Please feel free to link to this page.
Please feel free to link to this page.
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Localities for Genplesite
Locality List




All localities listed without proper references should be considered as questionable.
Russia (TL) | |
| 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. |