Cuprobismutite (original) (raw)
A valid IMA mineral species - grandfathered
About CuprobismutiteHide
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Crystal System:
Monoclinic
Name:
In allusion to its content of copper and bismuth.
Unique IdentifiersHide
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Long-form identifier:
mindat:1:1:1177:4
8962d367-0e25-42d8-9225-3a6491a49bce
IMA Classification of CuprobismutiteHide
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Approved, 'Grandfathered' (first described prior to 1959)
Classification of CuprobismutiteHide
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2.JA.10a
2 : SULFIDES and SULFOSALTS (sulfides, selenides, tellurides; arsenides, antimonides, bismuthides; sulfarsenites, sulfantimonites, sulfbismuthites, etc.)
J : Sulfosalts of PbS archetype
A : Galena derivatives with little or no Pb
3.8.2.1
3 : SULFOSALTS
8 : 1 < ø < 2
5.1.8
5 : Sulphosalts - Sulpharsenites and Sulphobismuthites (those containing Sn, Ge,or V are in Section 6)
1 : Sulpharsenites etc. of Cu
Mineral SymbolsHide
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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.
| Symbol | Source | Reference |
|---|---|---|
| Cbit | IMA–CNMNC | Warr, L.N. (2021). IMA–CNMNC approved mineral symbols. Mineralogical Magazine, 85(3), 291-320. doi:10.1180/mgm.2021.43 |
| Cbs | 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 CuprobismutiteHide
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Density:
6.36 g/cm3 (Measured) 6.24 g/cm3 (Calculated)
Optical Data of CuprobismutiteHide
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Reflectivity:
| Wavelength | R1 | R2 |
|---|---|---|
| 400nm | 31.8% | 35.2% |
| 440nm | 33.1% | 36.4% |
| 480nm | 34.9% | 37.6% |
| 520nm | 35.4% | 38.4% |
| 560nm | 36.2% | 39.4% |
| 600nm | 36.8% | 40.1% |
| 640nm | 37.2% | 40.4% |
| 680nm | 37.2% | 40.5% |
| 700nm | 37.2% | 40.5% |
Graph shows reflectance levels at different wavelengths (in nm). Top of box is 100%. Peak reflectance is 40.5%.
R1 shown in black, R2 shown in red
Chemistry of CuprobismutiteHide
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Mindat Formula:
Cu8AgBi13S24
Crystallography of CuprobismutiteHide
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Crystal System:
Monoclinic
Class (H-M):
2/m - Prismatic
Cell Parameters:
a = 17.520(1) Å, b = 3.926(3) Å, c = 15.261(1) Å
β = 100.18(1)°
Ratio:
a:b:c = 4.463 : 1 : 3.887
Unit Cell V:
1,033.18 ų (Calculated from Unit Cell)
Morphology:
Massive, prismatic crystals, thin blades
Crystal StructureHide
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| ID | Species | Reference | Link | Year | Locality | Pressure (GPa) | Temp (K) |
|---|---|---|---|---|---|---|---|
| 0005923 | Cuprobismutite | Topa D, Makovicky E, Balic-Zunic T (2003) Crystal structures and crystal chemistry of members of the cuprobismutite homologous series of sulfosalts The Canadian Mineralogist 41 1481-1501 |  |
2003 | Felbertal Austria | 0 | 293 |
CIF Raw Data - click here to close
X-Ray Powder DiffractionHide
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Powder Diffraction Data:
| d-spacing | Intensity |
|---|---|
| 3.10 Å | (100) |
| 2.73 Å | (60) |
| 3.65 Å | (40b) |
| 4.31 Å | (30) |
| 1.961 Å | (30) |
| 1.719 Å | (30) |
| 6.24 Å | (20) |
Comments:
Hall’s Valley, Colorado, USA. An analysis is also given in Nuffield (1952).
Geological EnvironmentHide
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Geological Setting:
Quartz veins
Type Occurrence of CuprobismutiteHide
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General Appearance of Type Material:
Small slender crystals, generally bronzed by oxidation and deeply striated. Occasionally they are joined together laterally, forming thin corrugated plates.
Place of Conservation of Type Material:
Harvard University, Cambridge, Massachusetts, USA, number 94989.
National Museum of Natural History (Smithsonian), Washington, D.C., USA, number 92902.
Associated Minerals at Type Locality:
Other Language Names for CuprobismutiteHide
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Simplified Chinese:辉铜铋矿
Traditional Chinese:輝鉍銅礦
Relationship of Cuprobismutite to other SpeciesHide
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Other Members of this group:
Common AssociatesHide
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Associated Minerals Based on Photo Data:
Related Minerals - Strunz-mindat GroupingHide
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Other InformationHide
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Notes:
Soluble in HNO3. Also soluble in HCl, with precipitation of silver chloride.
Heating in closed tube gives a sublimate of sulfur. On charcoal it gives a strong bismuth reaction.
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 CuprobismutiteHide
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References for CuprobismutiteHide
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Reference List:
Localities for CuprobismutiteHide
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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
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- 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.