UM1974-16-Se:CoFe
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Formula:
(Co,Fe)S2
Not the Fe-bearing discredited hastite; possibly equal to trogtalite (however differs in optical properties).
Very fine star-shaped crystals; subhedral and anhedral grains, up to 100 microns, in calcite from Habři, Žďár nad Sázavou area, Czech Republic. Associated with berzelianite, eskebornite, eucairite, and umangite.
Very fine star-shaped crystals; subhedral and anhedral grains, up to 100 microns, in calcite from Habři, Žďár nad Sázavou area, Czech Republic. Associated with berzelianite, eskebornite, eucairite, and umangite.
Unique Identifiers
Mindat ID:
47331
Long-form identifier:
mindat:1:1:47331:8
Similar Names
| UM1970-24-S:CuFe | (Fe,Cu)S | |
| UM1970-25-S:CuFeH | A synonym of Ferrovalleriite | 2(Fe,Cu)S · 1.5Fe(OH)2 |
| UM1979-02-AsO:CuFe | Cu-Fe-Ca-As-Sb-O | |
| UM1981-12-S:CoFe | ~(Co,Fe)4S3 | |
| UM1983-05-E:CoFe | Fe2Co | |
| UM1983-12-S:CuFe | Cu2FeS3 | |
| UM1986-42-S:CuFe | Cu2Fe3S5 | |
| UM1987-10-S:AgFe | Ag2Fe15S20 | |
| UM1988-17-S:CuFe | Cu7Fe8S16 | |
| UM1988-18-S:CuFe | Cu5Fe9S14 | |
| UM1994-22-S:CuFe | CuFe3S4 | |
| UM2002-12-OS:CuFe | Valid as an unnamed mineral | ~(Cu,Fe)SO ? |
| UM2003-19-S:CuFe | Valid as an unnamed mineral | (Cu0.96K0.04)(Fe0.6Cu0.4)(S1.98O0.02) |
Optical Data of UM1974-16-Se:CoFe
Anisotropism:
strong, brownish-yellow to brown (air), yellowish-brown to brown (oil)
Bireflectance:
strong, creamy to yellow
Reflectivity:
| Wavelength | R1 (%) | R2 (%) |
|---|---|---|
| 589nm | 40.6% | 44.4% |
Graph shows reflectance levels at different wavelengths (in nm). Peak reflectance is 44.4%.
R1 shown in black, R2 shown in red
Colour in reflected light:
bright yellowish-white with a slight pink tint
Chemistry of UM1974-16-Se:CoFe
Mindat Formula:
(Co,Fe)S2
Elements listed:
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 UM1974-16-Se:CoFe
mindat.org URL:
https://www.mindat.org/min-47331.html
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References for UM1974-16-Se:CoFe
Reference List:
Localities for UM1974-16-Se:CoFe
Showing 1 localities.
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The 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).
All localities listed without proper references should be considered as questionable.
Czech Republic | |
| De Montreuil (1974) +1 other reference |
