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Allargentum Mineral Data
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General Allargentum Information
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 Chemical Formula: |
Ag1-xSbx(x=0.009-0.16) |
| Composition: |
Molecular Weight = 108.01 gm |
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Silver 98.87 % Ag |
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Antimony 1.13 % Sb |
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______ |
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100.00 % |
| Empirical Formula: |
Ag0.99Sb0.01 |
| Environment: |
Found in high-grade silver ores. |
| IMA Status: |
Valid Species (Pre-IMA) 1949 |
| Locality: |
Hi-Ho mine, Cobalt, Ontario, Canada Link to MinDat.org Location Data. |
| Name Origin: |
Named from the Greek for 'another' and the Latin 'argentum'. |
| Name Pronunciation: |
Allargentum + Pronunciation  |
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Allargentum Image |
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Images:
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Allargentum
Comments: Irregular crystalline aggregate grain of allargentum.
Location: Shaft 371, Schlema-Hartenstein area, Erzgebirge, Saxony, Germany.
Scale: Specimen size 43 mm.
© Thomas Witzke / Abraxas-Verlag |
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Allargentum Crystallography
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| Axial Ratios: |
a:c = 1:1.61969 |
| Cell Dimensions: |
a = 2.945, c = 4.77, Z = 2; V = 35.83 Den(Calc)= 10.01 |
| Crystal System: |
Hexagonal - Dihexagonal Dipyramidal H-M Symbol (6/m 2/m 2/m) Space Group: P 63/mmc |
| X Ray Diffraction: |
By Intensity(I/Io): 2.37(1), 2.252(0.6), 2.548(0.4), |
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Physical Properties of Allargentum
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| Color: |
Silver gray. |
| Density: |
10 |
| Diaphaneity: |
Opaque |
| Hardness: |
4 - Fluorite |
| Luster: |
Metallic |
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Optical Properties of Allargentum
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| RL Anisotrophism: |
Weak. |
| Reflectivity |
Standardized Intensity (100%) Reflection Spectra of Allargentum in Air
| λ |
R1 |
R2 |
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∑ R1(λ) |
∑ R2(λ) |
| 400 nm |
67.00 |
68.80 |
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| 420 nm |
66.50 |
68.20 |
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| 440 nm |
66.00 |
67.60 |
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| 460 nm |
65.90 |
67.30 |
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| 480 nm |
67.10 |
68.60 |
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| 500 nm |
67.40 |
68.70 |
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| 520 nm |
68.90 |
70.40 |
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| 540 nm |
69.50 |
70.90 |
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| 560 nm |
70.20 |
71.60 |
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| 580 nm |
70.50 |
71.80 |
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| 600 nm |
71.00 |
72.30 |
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| 620 nm |
71.70 |
73.00 |
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| 640 nm |
72.10 |
73.40 |
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| 660 nm |
72.60 |
73.90 |
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| 680 nm |
73.10 |
74.30 |
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| 700 nm |
73.80 |
74.90 |
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Calculated Relative Intensity Colors of Allargentum in Air
Relative
Intensity |
0% |
20% |
40% |
60% |
80% |
100% |
120% |
140% |
| R1 |
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| R2 |
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Calculated Properties of Allargentum
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| Electron Density: |
Bulk Density (Electron Density)=8.72 gm/cc
note: Specific Gravity of Allargentum =10.0 gm/cc.
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| Fermion Index: |
Fermion Index = 0
Boson Index = 1 |
| Photoelectric: |
PEAllargentum = 262.48 barns/electron
U=PEAllargentum x rElectron Density=2,288.64 barns/cc.
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| Radioactivity: |
GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Allargentum is Not Radioactive |
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Allargentum Classification
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| Dana Class: |
02.02.01.02 (02)Sulfides - Including Selenides and Tellurides |
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(02.02)where Am Bn Xp, with (m+n):p=3:1 |
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(02.02.01)Dyscrasite Group |
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02.02.01.01 Dyscrasite Ag3Sb Pm2m mm2 |
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02.02.01.02 Allargentum Ag1-xSbx(x=0.009-0.16) P 63/mmc 6/m 2/m 2/m |
| Strunz Class: |
02.AA.30 02 - SULFIDES and SULFOSALTS (sulfides, selenides, tellurides; arsenides, antimonides, bismuthides; sulfarsenites, sulf |
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02.A - Simple Sulfides, Selenides, etc |
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02.AA -Alloys of metalloids with Cu, Ag, Sn, Au |
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02.AA.30 Allargentum Ag1-xSbx(x=0.009-0.16) P 63/mmc 6/m 2/m 2/m |
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Other Allargentum Information
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| References: |
NAME( Dana8) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(AntBidBlaNic1) |
| See Also: |
Links to other databases for Allargentum :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - EUROmin Project
4 - Ecole des Mines de Paris
5 - GeoScienceWorld
6 - Google Images
7 - Google Scholar
8 - Handbook of Mineralogy (MinSocAm)
9 - Handbook of Mineralogy (UofA)
10 - MinDAT
11 - Mineralienatlas (Deutsch)
12 - Online Mineral Museum
13 - QUT Mineral Atlas
14 - Ruff.Info
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Allargentum
Ag1-xSbx(x=0.009-0.16)
Dana No: 02.02.01.02 Strunz No: 02.AA.30
Locality:
Notes:
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