UM1986-47-S:CuFeSn
A material that is NOT an approved mineral species
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Formula:
Cu9Fe2Sn2S12
author's formula is most likely Cu+10Cu2+Fe3+4Sn3S16
Crystal System:
Tetragonal
Most likely corresponds to "Mineral II"; co-described with 'UM1986-44-S:CuFeSn' (Mineral IV), 'UM1986-45-S:CuFeSn' (Mineral V), 'UM1986-49-S:CuSn' (Mineral VI), 'UM1986-46-S:CuFeSn' (Mineral VII), 'UM1986-48-S:CuFeSn' (Mineral I), and 'UM1986-43-S:CuFeSn' (Mineral III), from unspecified Au-Ag volcanic deposits of the Soviet Central Asia.
Unique Identifiers
Mindat ID:
50328
Long-form identifier:
mindat:1:1:50328:4
GUID
(UUID V4):
(UUID V4):
20683d10-8a71-4370-bbab-a3e807deab80
Physical Properties of UM1986-47-S:CuFeSn
Hardness:
VHN100=250 - Vickers
Comment:
average
Optical Data of UM1986-47-S:CuFeSn
Anisotropism:
marked (yellow-red to dark blue colour effects)
Bireflectance:
weak
Reflectivity:
| Wavelength | R1 | R2 |
|---|---|---|
| 580nm | 24.5% | 22.7% |
Graph shows reflectance levels at different wavelengths (in nm). Top of box is 100%. Peak reflectance is 24.5%.
R1 shown in black, R2 shown in red
Colour in reflected light:
orange-red
Pleochroism:
Visible
Comments:
orange to orange-red
Chemistry of UM1986-47-S:CuFeSn
Mindat Formula:
Cu9Fe2Sn2S12
author's formula is most likely Cu+10Cu2+Fe3+4Sn3S16
author's formula is most likely Cu+10Cu2+Fe3+4Sn3S16
Elements listed:
Crystallography of UM1986-47-S:CuFeSn
Crystal System:
Tetragonal
Cell Parameters:
a = 10.78 Å, c = 5.29 Å
Ratio:
a:c = 1 : 0.491
Unit Cell V:
614.74 ų (Calculated from Unit Cell)
Comment:
Space group P421m or P4212
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 UM1986-47-S:CuFeSn
mindat.org URL:
https://www.mindat.org/min-50328.html
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Please feel free to link to this page.
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References for UM1986-47-S:CuFeSn
Reference List:
