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Paradocrasite Mineral Data
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General Paradocrasite Information
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 Chemical Formula: |
Sb2(Sb,As)2 |
| Composition: |
Molecular Weight = 463.59 gm |
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Antimony 91.92 % Sb |
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Arsenic 8.08 % As |
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______ |
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100.00 % |
| Empirical Formula: |
Sb3.5As0.5 |
| Environment: |
Associated with stibarsen. |
| IMA Status: |
Approved IMA 1969 |
| Locality: |
Consuls mine at Broken Hill, New South Wales, Australia. Link to MinDat.org Location Data. |
| Name Origin: |
Named from the Greek for "unexpected alloy" |
| Name Pronunciation: |
Paradocrasite + Pronunciation  |
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Paradocrasite Image |
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Images:
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Paradocrasite Crystallography
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| Axial Ratios: |
a:b:c =1.7382:1:1.062 |
| Cell Dimensions: |
a = 7.252, b = 4.172, c = 4.431, Z = 1; beta = 123.13° V = 112.27 Den(Calc)= 6.86 |
| Crystal System: |
Monoclinic - Sphenoidal H-M Symbol (2) Space Group: C 2 |
| X Ray Diffraction: |
By Intensity(I/Io): 3.05(1), 2.093(0.8), 2.219(0.8), |
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Physical Properties of Paradocrasite
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| Cleavage: |
{???} Perfect |
| Color: |
Silver white. |
| Density: |
6.52 |
| Diaphaneity: |
Opaque |
| Fracture: |
Brittle - Generally displayed by glasses and most non-metallic minerals. |
| Habit: |
Aggregates - Made of numerous individual crystals or clusters. |
| Habit: |
Twinning Common - Crystals are usually twinned. |
| Hardness: |
3.5 - Copper Penny |
| Luster: |
Metallic |
| Streak: |
metallic |
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Optical Properties of Paradocrasite
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| RL Anisotrophism: |
Strong, in vivid pinks, pale orange, yellow, pale greenish blue and pale green.. |
| RL Color: |
Bright white. |
| RL Pleochroism: |
Distinct, from yellowish white to slightly gray white in air, pale pink-white-gray in oil. |
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Calculated Properties of Paradocrasite
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| Electron Density: |
Bulk Density (Electron Density)=5.77 gm/cc
note: Specific Gravity of Paradocrasite =6.86 gm/cc.
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| Fermion Index: |
Fermion Index = 0
Boson Index = 1 |
| Photoelectric: |
PEParadocrasite = 327.41 barns/electron
U=PEParadocrasite x rElectron Density=1,889.52 barns/cc.
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| Radioactivity: |
GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Paradocrasite is Not Radioactive |
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Paradocrasite Classification
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| Dana Class: |
01.03.03.01 (01)Native Elements |
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(01.03)with semi-metallic and non-metallic elements |
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(01.03.03)Dana Group |
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01.03.03.01 Paradocrasite Sb2(Sb,As)2 C 2 2 |
| Strunz Class: |
01.CA.15 01 - ELEMENTS (Metals and intermetallic alloys; metalloids and nonmetals; carbides, silicides, nitrides, phosphides) |
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01.C - Metalloids and Nonmetals |
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01.CA -Arsenic group elements |
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01.CA.15 Paradocrasite Sb2(Sb,As)2 C 2 2 |
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Other Paradocrasite Information
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| References: |
NAME( MinRec) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(AntBidBlaNic1) |
| See Also: |
Links to other databases for Paradocrasite :
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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Print or Cut-and-Paste your Paradocrasite Specimen Label here :
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Paradocrasite
Sb2(Sb,As)2
Dana No: 01.03.03.01 Strunz No: 01.CA.15
Locality:
Notes:
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