Tsnigriite
A valid IMA mineral species
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Formula:
Ag9SbTe3S3
Colour:
Grey
Lustre:
Metallic
Hardness:
3½
Specific Gravity:
7.38 (Calculated)
Crystal System:
Monoclinic
Name:
Named after the acronym TSNIGRI from the Russian name for the Central Scientific Research Institute of Geological Prospecting (Moscow).
Unique Identifiers
Mindat ID:
4038
Long-form identifier:
mindat:1:1:4038:5
GUID
(UUID V4):
(UUID V4):
d27951f9-a884-4e55-add5-5d128dd22b58
IMA Classification of Tsnigriite
Approved
Approval year:
1991
First published:
1992
Classification of Tsnigriite
2.LA.55
2 : SULFIDES and SULFOSALTS (sulfides, selenides, tellurides; arsenides, antimonides, bismuthides; sulfarsenites, sulfantimonites, sulfbismuthites, etc.)
L : Unclassified Sulfosalts
A : Without essential Pb
2 : SULFIDES and SULFOSALTS (sulfides, selenides, tellurides; arsenides, antimonides, bismuthides; sulfarsenites, sulfantimonites, sulfbismuthites, etc.)
L : Unclassified Sulfosalts
A : Without essential Pb
3.1.12.1
3 : SULFOSALTS
1 : ø > 4
3 : SULFOSALTS
1 : ø > 4
Mineral Symbols
As of 2021 there are now IMA–CNMNC approved mineral symbols (abbreviations) for each mineral species, useful for tables and diagrams.
Symbol | Source | Reference |
---|---|---|
Tng | 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 Tsnigriite
Metallic
Transparency:
Opaque
Colour:
Grey
Hardness:
3½ on Mohs scale
Hardness:
VHN20=125 kg/mm2 - Vickers
Density:
7.38 g/cm3 (Calculated)
Chemistry of Tsnigriite
Mindat Formula:
Ag9SbTe3S3
Elements listed:
Common Impurities:
Cu,Pb,As,Bi
Crystallography of Tsnigriite
Crystal System:
Monoclinic
Cell Parameters:
a = 8.89(1) Å, b = 8.292(8) Å, c = 19.50(1) Å
β = 97.02(3)°
β = 97.02(3)°
Ratio:
a:b:c = 1.072 : 1 : 2.352
Unit Cell V:
1,426.68 ų (Calculated from Unit Cell)
Z:
4
Comment:
Point Group: 2/m or m.; Space Group: P2/m or Pm.
X-Ray Powder Diffraction
Powder Diffraction Data:
d-spacing | Intensity |
---|---|
4.26 Å | (50) |
3.78 Å | (70) |
2.89 Å | (40) |
2.85 Å | (40) |
2.29 Å | (40) |
2.20 Å | (100) |
2.10 Å | (40) |
2.00 Å | (40) |
1.781 Å | (40) |
1.708 Å | (40) |
1.674 Å | (40) |
Geological Environment
Paragenetic Mode(s):
Paragenetic Mode | Earliest Age (Ga) |
---|---|
High-𝑇 alteration and/or metamorphism | |
33 : Minerals deposited by hydrothermal metal-rich fluids (see also [#12]) |
Type Occurrence of Tsnigriite
General Appearance of Type Material:
Anhedral grains, a few tens of micrometers across, rarely up to 0.1 mm across; some grains have nearly rhombic cross sections.
Place of Conservation of Type Material:
A.E. Fersman Mineralogical Museum of the Russian Academy of Sciences, Moscow, Russia.
Geological Setting of Type Material:
Gold and silver deposit
Associated Minerals at Type Locality:
Reference:
Sandomirskaya, S.M., Arifulov, C.K., Botova, M.M., Mozgova, N.N., Nenasheva, S.N., Tsepin, A.I., Sivtsov, A.V. (1992) Tsnigriite Ag9SbTe3(S,Se)3 — a new mineral. Zapiski Vserossijskogo Mineralogicheskogo Obshchestva: 121(5): 95-101.
Synonyms of Tsnigriite
Other Language Names for Tsnigriite
German:Tsnigriit
Spanish:Tsnigriita
Related Minerals - Strunz-mindat Grouping
2.LA. | Gladkovskyite | MnTlAs3S6 |
2.LA. | Biagioniite | Tl2SbS2 |
2.LA. | Thunderbayite | TlAg3Au3Sb7S6 |
2.LA. | Auerbakhite | MnTl2As2S5 |
2.LA. | Ferrofettelite | [Ag6As2S7][Ag10FeAs2S8] |
2.LA.10 | Dervillite | Ag2AsS2 |
2.LA.15 | Daomanite | CuPtAsS2 |
2.LA.20 | Vaughanite | TlHgSb4S7 |
2.LA.25 | Criddleite | TlAg2Au3Sb10S10 |
2.LA.30 | Fettelite | [Ag6As2S7][Ag10HgAs2S8] |
2.LA.35 | Chaméanite | (Cu,Fe)4As(Se,S)4 |
2.LA.40 | Arcubisite | Ag6CuBiS4 |
2.LA.45 | Mgriite | Cu3AsSe3 |
2.LA.50 | Benleonardite | [Ag6(Sb,As)2S6Te][Ag9Cu(S,Te)2Te2] |
2.LA.60 | Borovskite | Pd3SbTe4 |
2.LA.65 | Jonassonite | AuBi5S4 |
2.LA.65 | Nuwaite | Ni6GeS2 |
2.LA.65 | Butianite | Ni6SnS2 |
2.LA.70 | Raberite | Tl5Ag4As6SbS15 |
2.LA.75 | Spaltiite | Tl2Cu2As2S5 |
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.
Internet Links for Tsnigriite
mindat.org URL:
https://www.mindat.org/min-4038.html
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External Links:
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References for Tsnigriite
Reference List:
Jambor, John L., Grew, Edward S. (1994) New Mineral Names. American Mineralogist, 79 (3-4) 387-391 pp.389-390
Localities for Tsnigriite
Locality List
- 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.
All localities listed without proper references should be considered as questionable.
Austria | |
| Paar et al. (2018) |
India | |
| Pekov (1998) |
Poland | |
| Kozłowski et al. (2022) |
Russia | |
| Vakh et al. (2016) |
| Kasatkin et al. (2020) |
Uzbekistan (TL) | |
| Sandomirskaya et al. (1992) +1 other reference |