UM2000-44-S:AgAsPbSb
Valid as an unnamed mineral
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Formula:
Pb9Ag(Sb,As)13S29
Specific Gravity:
5.51 (Calculated)
Crystal System:
Monoclinic
Co-described with UM2000-45-S:AgAsSb, UM1982-10-S:AsSbTl and UM1970-20-S:AsSbTl.
As acicular crystals, in aggregates with zinkenite.
Electron microprobe data, wt.%:
Pb 43.6
Tl 3.1
Ag 2.6
Sb 22.4
As 8.5
S 20.8
total 101.0
This corresponds to (Pb9.15Tl0.66)Σ9.81Ag1.05(Sb8.00As4.93)Σ12.93S28.21.
As acicular crystals, in aggregates with zinkenite.
Electron microprobe data, wt.%:
Pb 43.6
Tl 3.1
Ag 2.6
Sb 22.4
As 8.5
S 20.8
total 101.0
This corresponds to (Pb9.15Tl0.66)Σ9.81Ag1.05(Sb8.00As4.93)Σ12.93S28.21.
Unique Identifiers
Mindat ID:
54208
Long-form identifier:
mindat:1:1:54208:9
GUID
(UUID V4):
(UUID V4):
e6fabcd4-4a28-440c-8d09-95d7db4f61ea
Classification of UM2000-44-S:AgAsPbSb
IMA status notes:
Unnamed (probably valid)
Physical Properties of UM2000-44-S:AgAsPbSb
Hardness:
VHN25=157 - 170 kg/mm2 - Vickers
Comment:
mean VHN is 165
Density:
5.51 g/cm3 (Calculated)
Optical Data of UM2000-44-S:AgAsPbSb
Anisotropism:
strong, polarization colors from brown to deep blue
Bireflectance:
readily observable, gray tints
Reflectivity:
Wavelength | R1 | R2 |
---|---|---|
460nm | 42.5% | 37.1% |
540nm | 40.4% | 35.9% |
580nm | 39.3% | 33.9% |
660nm | 36.2% | 31.4% |
Graph shows reflectance levels at different wavelengths (in nm). Top of box is 100%. Peak reflectance is 42.5%.
R1 shown in black, R2 shown in red
Colour in reflected light:
white; white-gray in oil
Internal Reflections:
rare, purple-red
Chemical Properties of UM2000-44-S:AgAsPbSb
Formula:
Pb9Ag(Sb,As)13S29
Crystallography of UM2000-44-S:AgAsPbSb
Crystal System:
Monoclinic
Cell Parameters:
a = 17.640(8) Å, b = 18.464(8) Å, c = 3.967(3) Å
β = 90.8°
β = 90.8°
Ratio:
a:b:c = 0.955 : 1 : 0.215
Unit Cell V:
1,291.95 ų (Calculated from Unit Cell)
Z:
1
Twinning:
some crystals are twinned parallel to their elongation
X-Ray Powder Diffraction
Powder Diffraction Data:
d-spacing | Intensity |
---|---|
3.406 Å | (100) |
2.960 Å | (80) |
2.821 Å | (70) |
2.730 Å | (70) |
2.089 Å | (80) |
1.866 Å | (60) |
Comments:
pattern similar to that of jamesonite
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.
References for UM2000-44-S:AgAsPbSb
Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Johan, Z., Mantienne, J. (2000): Thallium-rich mineralization at Jas Roux, Hautes-Alpes, France: a complex epithermal, sediment-hosted, ore-forming system. J. Czech Geol. Soc.: 45: 63-77; in: Jambor, J.L., Roberts, A.C (2000): New mineral names. Am. Min.: 86(7-8): 941.
Smith, D.G.W., Nickel, E.H. (2007): A System of Codification for Unnamed Minerals: Report of the SubCommittee for Unnamed Minerals of the IMA Commission on New Minerals, Nomenclature and Classification (2012 Update). Canadian Mineralogist: 45: 983-1055; http://nrmima.nrm.se (2016) (Update: 2012-01)
Internet Links for UM2000-44-S:AgAsPbSb
mindat.org URL:
https://www.mindat.org/min-54208.html
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Localities for UM2000-44-S:AgAsPbSb
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.
France | |
| Johan, Z., Mantienne, J. (2000) Thallium-rich mineralization at Jas Roux, Hautes-Alpes, France: a complex epithermal, sediment-hosted, ore-forming system. Journal of the Czech Geological Society: 45: 63-77.; Jambor, J.L., Roberts, A.C. (2000) New mineral names. American Mineralogist: 86(7-8): 941. |