UM1989-24-S:CuFeZn
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Formula:
(Zn,Fe,Cu)S
Colour:
black (Chinese material)
Lustre:
Metallic
Hardness:
3½ - 4
Said not to be identical with sphalerite.
Co-desribed with coexisting phase similar to 'Unnamed (Cu-Zn-In Sulphide)'; also associated are roquesite, sakuraiite, kesterite, and indian sphalerite.
Forms dendritic aggregates within chalcopyrite.
A similar mineral of Inner Mongolia occurs in skarn-embedded veins (2-3 cm wide), rarely, in form aggregated anhedral grains, localized in interstices between chalcopyrite and sphalerite. The Cu distribution is likely to be homogenous.
Note: it is not sure, if the Japan material is systematically identical to the Chinese one.
Co-desribed with coexisting phase similar to 'Unnamed (Cu-Zn-In Sulphide)'; also associated are roquesite, sakuraiite, kesterite, and indian sphalerite.
Forms dendritic aggregates within chalcopyrite.
A similar mineral of Inner Mongolia occurs in skarn-embedded veins (2-3 cm wide), rarely, in form aggregated anhedral grains, localized in interstices between chalcopyrite and sphalerite. The Cu distribution is likely to be homogenous.
Note: it is not sure, if the Japan material is systematically identical to the Chinese one.
Unique Identifiers
Mindat ID:
51646
Long-form identifier:
mindat:1:1:51646:4
Similar Names
| UM1982-12-S:CuFeSn | Cu3FeSnS5 | |
| UM1984-30-S:CuFeSn | Cu2Fe2Sn3S7 | |
| UM1984-31-S:CuFeSn | Cu8Fe2Sn3S12 | |
| UM1986-43-S:CuFeSn | Cu11Fe2Sn4S16 | |
| UM1986-44-S:CuFeSn | Cu5FeSn2S8 | |
| UM1986-45-S:CuFeSn | Cu10Fe3Sn3S16 | |
| UM1986-46-S:CuFeSn | Cu13Fe4Sn3S18 | |
| UM1986-47-S:CuFeSn | Cu9Fe2Sn2S12 | |
| UM1986-48-S:CuFeSn | Cu12Fe3Sn3S16 | |
| UM1998-15-S:CuFeZn | Cu2Fe3Zn5S10 | |
| UM2002-23-S:CuFeZn | Zn2(Fe,Cu)S3 |
Physical Properties of UM1989-24-S:CuFeZn
Metallic
Transparency:
Opaque
Comment:
Chinese material
Colour:
Black (Chinese material)
Hardness:
3½ - 4 on Mohs scale
Comment:
Chinese material
Optical Data of UM1989-24-S:CuFeZn
Anisotropism:
strong (Japan); weak, dark gray to gray with a weak bluish tint (to brown) (China)
Reflectivity:
| Wavelength | R1 (%) |
|---|---|
| 405nm | 19.80% |
| 436nm | 19.65% |
| 480nm | 19.01% |
| 526nm | 18.85% |
| 546nm | 18.23% |
| 589nm | 17.80% |
| 644nm | 17.31% |
| 656nm | 16.10% |
Graph shows reflectance levels at different wavelengths (in nm). Peak reflectance is 19.80%.
Colour in reflected light:
brownish gray with a violet tint (Japan); gray with a slight bluish tint (China)
Pleochroism:
Non-pleochroic
Comments:
reflectivity dana to Chinese material; slightly yellowish brown relative to sphalerite (China)
Chemistry of UM1989-24-S:CuFeZn
Mindat Formula:
(Zn,Fe,Cu)S
Elements listed:
X-Ray Powder Diffraction
Powder Diffraction Data:
| d-spacing | Intensity |
|---|---|
| 3.1080 Å | (100) |
| 1.9060 Å | (50) |
| 1.628 Å | (30) |
| 1.240 Å | (20) |
| 1.103 Å | (20) |
| 1.040 Å | (20) |
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 UM1989-24-S:CuFeZn
mindat.org URL:
https://www.mindat.org/min-51646.html
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References for UM1989-24-S:CuFeZn
Reference List:
Localities for UM1989-24-S:CuFeZn
symbol to view information about a locality.
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.
China | |
| Lei et al. (1991) +1 other reference |
Japan | |
| Ohta (1989) +1 other reference |
