Weissite
A valid IMA mineral species - grandfathered
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About Weissite
Formula:
Cu2-xTe
Previously given as Cu5Te3.
Colour:
Bluish black, black (tarnished)
Lustre:
Metallic
Hardness:
3
Specific Gravity:
5.83 (Calculated)
Crystal System:
Hexagonal
Name:
Named after Dr. Louis Weiss, pharmacist (July 20, 1854 Chicago, Illinois - Santa Monica, Calif. June 17, 1924), owner of the Good Hope Mine, Colorado (USA).
This page provides mineralogical data about Weissite.
Unique Identifiers
Mindat ID:
4263
Long-form identifier:
mindat:1:1:4263:1
GUID
(UUID V4):
(UUID V4):
f1048f7b-0e9d-4d6a-9f4c-4bf0a768f177
IMA Classification of Weissite
Approved, 'Grandfathered' (first described prior to 1959)
IMA Formula:
Cu2-xTe
Type description reference:
Classification of Weissite
2.BA.30
2 : SULFIDES and SULFOSALTS (sulfides, selenides, tellurides; arsenides, antimonides, bismuthides; sulfarsenites, sulfantimonites, sulfbismuthites, etc.)
B : Metal Sulfides, M: S > 1: 1 (mainly 2: 1)
A : With Cu, Ag, Au
2 : SULFIDES and SULFOSALTS (sulfides, selenides, tellurides; arsenides, antimonides, bismuthides; sulfarsenites, sulfantimonites, sulfbismuthites, etc.)
B : Metal Sulfides, M: S > 1: 1 (mainly 2: 1)
A : With Cu, Ag, Au
2.4.8.1
2 : SULFIDES
4 : AmBnXp, with (m+n):p = 2:1
2 : SULFIDES
4 : AmBnXp, with (m+n):p = 2:1
3.1.16
3 : Sulphides, Selenides, Tellurides, Arsenides and Bismuthides (except the arsenides, antimonides and bismuthides of Cu, Ag and Au, which are included in Section 1)
1 : Sulphides etc. of Cu
3 : Sulphides, Selenides, Tellurides, Arsenides and Bismuthides (except the arsenides, antimonides and bismuthides of Cu, Ag and Au, which are included in Section 1)
1 : Sulphides etc. of Cu
Mineral Symbols
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.
Please only use the official IMA–CNMNC symbol. Older variants are listed for historical use only.
Symbol | Source | Reference |
---|---|---|
Wst | IMA–CNMNC | Warr, L.N. (2021). IMA–CNMNC approved mineral symbols. Mineralogical Magazine, 85(3), 291-320. doi:10.1180/mgm.2021.43 |
Wst | The Canadian Mineralogist (2019) | The Canadian Mineralogist (2019) The Canadian Mineralogist list of symbols for rock- and ore-forming minerals (December 30, 2019). download |
Physical Properties of Weissite
Metallic
Transparency:
Opaque
Colour:
Bluish black, black (tarnished)
Streak:
Black
Hardness:
3 on Mohs scale
Hardness:
VHN100=145 - 158 kg/mm2 - Vickers
Fracture:
Irregular/Uneven
Density:
5.83 g/cm3 (Calculated)
Optical Data of Weissite
Anisotropism:
distinct
Pleochroism:
Visible
Chemistry of Weissite
Mindat Formula:
Cu2-xTe
Previously given as Cu5Te3.
Previously given as Cu5Te3.
Elements listed:
Crystallography of Weissite
Crystal System:
Hexagonal
Class (H-M):
6/mmm (6/m 2/m 2/m) - Dihexagonal Dipyramidal
Space Group:
P6/mmm
Setting:
P6/mmm
Cell Parameters:
a = 12.54 Å, c = 21.71 Å
Ratio:
a:c = 1 : 1.731
Unit Cell V:
2,956.55 ų (Calculated from Unit Cell)
Z:
15
Crystal Structure
Load
Unit Cell | Unit Cell Packed
2x2x2 | 3x3x3 | 4x4x4
Unit Cell | Unit Cell Packed
2x2x2 | 3x3x3 | 4x4x4
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Data courtesy of the American Mineralogist Crystal Structure Database. Click on an AMCSD ID to view structure
ID | Species | Reference | Link | Year | Locality | Pressure (GPa) | Temp (K) |
---|---|---|---|---|---|---|---|
0020112 | Weissite | Bindi L, Carbone C, Belmonte D, Cabella R, Bracco R (2013) Weissite from Gambatesa mine, Val Graveglia, Liguria, Italy: occurrence, composition and determination of the crystal structure Mineralogical Magazine 77 475-483 | 2013 | Gambatesa mine, Val Graveglia, Liguria, Italy | 0 | 293 | |
0015565 | Weissite | Baranova R V, Avilov A S, Pinsker Z G (1974) Determination of the crystal structure of the hexagonal phase betaIII in the copper-tellurium system by electron diffraction Soviet Physics Crystallography 18 736-740 | 1974 | synthetic | 0 | 293 |
CIF Raw Data - click here to close
X-Ray Powder Diffraction
Powder Diffraction Data:
d-spacing | Intensity |
---|---|
2.09 Å | (100) |
3.61 Å | (70) |
2.01 Å | (70) |
3.24 Å | (60) |
1.80 Å | (50) |
2.55 Å | (30) |
2.17 Å | (30) |
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 Weissite
Place of Conservation of Type Material:
National Museum of Natural History, Washington, D.C., USA, 95782
Associated Minerals at Type Locality:
Reference:
Crawford W P (1927) Weissite - a new mineral. American Journal of Science series 5: 13: 345-346.
Synonyms of Weissite
Other Language Names for Weissite
Common Associates
Associated Minerals Based on Photo Data:
3 photos of Weissite associated with Gold | Au |
1 photo of Weissite associated with Kostovite | CuAuTe4 |
1 photo of Weissite associated with Rickardite | Cu7Te5 |
1 photo of Weissite associated with Goldfieldite | (Cu4◻2)(Cu4Cu+2)Te4S12S |
Related Minerals - Strunz-mindat Grouping
2.BA. | Orileyite | (Fe,Cu)2As |
2.BA. | Alburnite | Ag8GeTe2S4 |
2.BA. | Dzierżanowskite | CaCu2S2 |
2.BA. | Makotoite | Ag12(Cu3Au)S8 |
2.BA. | Xuwenyuanite | Ag9Fe3+Te2S4 |
2.BA.05 | Chalcocite | Cu2S |
2.BA.05 | Djurleite | Cu31S16 |
2.BA.05 | Geerite | Cu8S5 |
2.BA.05 | Roxbyite | Cu9S5 |
2.BA.10 | Anilite | Cu7S4 |
2.BA.10 | Digenite | Cu9S5 |
2.BA.15 | Bornite | Cu5FeS4 |
2.BA.20 | Bellidoite | Cu2Se |
2.BA.20 | Berzelianite | Cu2-xSe (x ≈ 0.12) |
2.BA.25 | Athabascaite | Cu5Se4 |
2.BA.25 | Umangite | Cu3Se2 |
2.BA.30 | Rickardite | Cu7Te5 |
2.BA.35 | Acanthite | Ag2S |
2.BA.35 | Spryite | Ag8(As3+0.5As5+0.5)S6 |
2.BA.40 | Mckinstryite | Ag5-xCu3+xS4 |
2.BA.40 | Stromeyerite | AgCuS |
2.BA.40d | UM2003-13-S:AgAuCu | Ag6AuCu2S5 |
2.BA.42 | Honeaite | Au3TlTe2 |
2.BA.45 | Jalpaite | Ag3CuS2 |
2.BA.45 | Kurilite | Ag8Te3Se |
2.BA.45 | Selenojalpaite | Ag3CuSe2 |
2.BA.47 | Spiridonovite | (Cu1-xAgx)2Te |
2.BA.50 | Eucairite | AgCuSe |
2.BA.50 | Wuyanzhiite | Cu2S |
2.BA.52 | Argentite | Ag2S |
2.BA.55 | Aguilarite | Ag4SeS |
2.BA.55 | Naumannite | Ag2Se |
2.BA.60 | Cervelleite | Ag4TeS |
2.BA.60 | Hessite | Ag2Te |
2.BA.60 | Chenguodaite | Ag9Fe3+Te2S4 |
2.BA.65 | Henryite | (Cu,Ag)3+xTe2 , with x ~ 0.40 |
2.BA.65 | Stützite | Ag5-xTe3, x = 0.24-0.36 |
2.BA.70 | Argyrodite | Ag8GeS6 |
2.BA.70 | Canfieldite | Ag8SnS6 |
2.BA.70 | Putzite | (Cu4.7Ag3.3)GeS6 |
2.BA.75 | Fischesserite | Ag3AuSe2 |
2.BA.75 | Penzhinite | (Ag,Cu)4Au(S,Se)4 |
2.BA.75 | Petrovskaite | AuAgS |
2.BA.75 | Petzite | Ag3AuTe2 |
2.BA.75 | Uytenbogaardtite | Ag3AuS2 |
2.BA.80 | Bezsmertnovite | (Au,Ag)4Cu(Te,Pb) |
2.BA.80 | Bilibinskite | PbCu2Au3Te2 |
2.BA.80 | Bogdanovite | (Au,Te,Pb)3(Cu,Fe) |
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 Weissite
mindat.org URL:
https://www.mindat.org/min-4263.html
Please feel free to link to this page.
Please feel free to link to this page.
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External Links:
Mineral Dealers:
References for Weissite
Reference List:
Thompson, R. M. (1949) The telluride minerals and their occurrence in Canada. American Mineralogist, 34 (5-6) 341-382
Localities for Weissite
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.
Australia | |
| Roberts et al. (1974) |
| Noble (2017) |
Econ Geol (1997) | |
Simpson (1948) | |
Bulgaria | |
| Cook et al. (2002) |
| Tsonev et al. (Eds.) |
| Cook et al. (2002) |
| Singer et al. (2008) |
Chile | |
| Jannas et al. (1990) |
China | |
| Zhenkuan Luo et al. (1999) |
| Shuzhang Tian et al. (1993) |
| Xu et al. (2014) |
| Yongrui Zhao and Yunqing Zhen (2006) |
Yongrui Zhao and Yunqing Zhen (2006) | |
Ghana | |
| Mineralogical Magazine 1990 54 : 617-627 +1 other reference |
Greece | |
| Bonev et al. (2005) +2 other references |
Italy | |
| Bindi et al. (2013) +1 other reference |
Japan | |
| Ishibashi (1960) |
Kazakhstan | |
| Глоба В.А. Месторождение Манка - новый геолого-промышленный тип месторождений золота. // Изв. НАН РК et al. (403) |
Poland | |
| Harańczyk (1983) |
Romania | |
| Afifi et al. (1988) |
Russia | |
| Lehmann et al. (1999) +2 other references |
| Bazai et al. (2009) |
| Lehmann et al. (1999) |
Slovakia | |
| Duda et. all. |
Sweden | |
| |
| Scherbina (1941) +2 other references |
Ukraine | |
| Bondarenko +2 other references |
USA | |
| Williams et al. (1975) +1 other reference |
| Eckel et al. (1997) |
| Eckel et al. (1997) |
| Eckel et al. (1997) |
Eckel et al. (1997) | |
| Dana 7:I:199. |
| HB1 (1990) +1 other reference |
| POHL et al. (1990) |
Eckel et al. (1997) | |
| Northrop et al. (1996) |
Northrop et al. (1996) | |
Northrop et al. (1996) | |
| Anthony et al. (1990) |
Uzbekistan | |
| Kovalenker et al. (1997) +2 other references |
Zimbabwe | |
| Afifi et al. (1988) +1 other reference |
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Good Hope Mine, Vulcan, Vulcan Mining District, Gunnison County, Colorado, USA