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UM1995-36-SOSiO:AlHPb
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Formula:
Pb27(Al1.6Mn0.4)(Si6O15)2(SO4)2O10(OH)24
Colour:
white
Specific Gravity:
6.37 (Calculated)
Crystal System:
Hexagonal
Round masses (100 microns in diameter), consisting of white, platy crystals.
Occurs within cavities in weathered rock fragments that are debris from a sphalerite-chalcopyrite-galena skarn deposit.
Electron microprobe data (mean & range, wt.%): MnO 0.40 (0.34â0.46), PbO 83.75 (83.16â84.33), Al2O3 1.04 (0.95â1.11), SiO2 9.35 (8.65â9.86), SO3 1.83 (1.67â1.93), H2O (by difference) 3.63, total 100.
Occurs within cavities in weathered rock fragments that are debris from a sphalerite-chalcopyrite-galena skarn deposit.
Electron microprobe data (mean & range, wt.%): MnO 0.40 (0.34â0.46), PbO 83.75 (83.16â84.33), Al2O3 1.04 (0.95â1.11), SiO2 9.35 (8.65â9.86), SO3 1.83 (1.67â1.93), H2O (by difference) 3.63, total 100.
Unique Identifiers
Mindat ID:
42947
Long-form identifier:
mindat:1:1:42947:8
Physical Properties of UM1995-36-SOSiO:AlHPb
Transparency:
Translucent
Colour:
White
Comment:
not determinable
Tenacity:
Brittle
Cleavage:
Perfect
Density:
6.37 g/cm3 (Calculated)
Chemistry of UM1995-36-SOSiO:AlHPb
Mindat Formula:
Pb27(Al1.6Mn0.4)(Si6O15)2(SO4)2O10(OH)24
Element Weights:
Crystallography of UM1995-36-SOSiO:AlHPb
Crystal System:
Hexagonal
Cell Parameters:
a = 9.203(4) Å, c = 25.72(2) Å
Ratio:
a:c = 1 : 2.795
Unit Cell V:
1,886.52 Ã
Âģ (Calculated from Unit Cell)
Comment:
Class or space group unknown.
X-Ray Powder Diffraction
Powder Diffraction Data:
| d-spacing | Intensity |
|---|---|
| 25.7 Ã | (70) |
| 3.20 Ã | (80) |
| 2.86 Ã | (100) |
| 1.95 Ã | (40) |
| 1.92 Ã | (35) |
| 1.87 Ã | (80) |
Other Information
IR Spectrum:
bands [cm-1]: t 3350 ("retained after heating to
104 oC", possibly from structural water"), 1551,
1347, 1142, 976
104 oC", possibly from structural water"), 1551,
1347, 1142, 976
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 UM1995-36-SOSiO:AlHPb
mindat.org URL:
https://www.mindat.org/min-42947.html
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References for UM1995-36-SOSiO:AlHPb
Reference List:
Localities for UM1995-36-SOSiO:AlHPb
Showing 3 localities.
symbol to view information about a locality.
The Locality List
- This locality has map coordinates listed.
- This locality has estimated coordinates.
â - 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.
France | |
| LesÃĐnÃĐchal et al. (06/21) |
Italy | |
| Cipriani et al. (1995) |
| Cipriani et al. (1995) |
