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Pararsenolamprite Mineral Data
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General Pararsenolamprite Information
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 Chemical Formula: |
As |
| Composition: |
Molecular Weight = 76.51 gm |
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Antimony 7.96 % Sb |
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Arsenic 92.04 % As |
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______ |
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100.00 % |
| Empirical Formula: |
As0.94Sb0.05 |
| Environment: |
Overgrowths on colloform arsenic found in dump material in a Sb-As-Ag-Au deposit. Trimorphous with arsenic and arsenolamprite.. |
| IMA Status: |
Approved IMA 1999 (Dana # Added) |
| Locality: |
Mukuno mone, Yamaga-cho, Oita Prefecture, Kyushy, Japan. Link to MinDat.org Location Data. |
| Name Origin: |
Named for the dimorphous relationship with arsenolamprite. |
| Synonym: |
IMA1999-047 |
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Pararsenolamprite Image |
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Images:
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Pararsenolamprite Crystallography
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| Axial Ratios: |
a:b:c =0.3298:1:1.0115 |
| Cell Dimensions: |
a = 3.3633, b = 10.196, c = 10.314, Z = 18; V = 353.69 Den(Calc)= 6.47 |
| Crystal System: |
Orthorhombic Space Group: Pmn2 or P 21nm |
| X Ray Diffraction: |
By Intensity(I/Io): 5.17(1)(002), 3.259(0.58)(013), 2.84(0.27)(032),1.794(0.26), 4.6(0.24)(012), 2.299(0.23)(024), 2.58(0.22)(004), |
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Physical Properties of Pararsenolamprite
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| Color: |
Lead gray. |
| Density: |
5.88 - 6.01, Average = 5.94 |
| Diaphaneity: |
Opaque |
| Fracture: |
Sectile - Curved shavings or scrapings produced by a knife blade, (e.g. graphite). |
| Habit: |
Aggregates - Made of numerous individual crystals or clusters. |
| Habit: |
Bladed - Aggregates of thin lath-like crystals (e.g. kyanite). |
| Habit: |
Radial - Crystals radiate from a center without producing stellar forms (e.g. stibnite) |
| Hardness: |
2-2.5 - Gypsum-Finger Nail |
| Luster: |
Metallic |
| Streak: |
black |
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Optical Properties of Pararsenolamprite
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| RL Anisotrophism: |
Strong. |
| RL Bireflectance: |
From creamy to brown, gray, green. |
| RL Color: |
White with a slight greenish blue tint. |
| RL Pleochroism: |
Dark brown and greenish gray. |
| Reflectivity |
Standardized Intensity (100%) Reflection Spectra of Pararsenolamprite in Air
| λ |
R1 |
R2 |
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∑ R1(λ) |
∑ R2(λ) |
| 470 nm |
49.00 |
44.00 |
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| 546 nm |
47.00 |
42.10 |
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| 589 nm |
44.80 |
39.90 |
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| 650 nm |
44.90 |
40.30 |
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Standardized Intensity (100%) Reflection Spectra of Pararsenolamprite in Oil
| λ |
R1 |
R2 |
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∑ R1(λ) |
∑ R2(λ) |
| 470 nm |
33.60 |
29.30 |
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| 546 nm |
31.50 |
28.00 |
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| 589 nm |
29.70 |
26.90 |
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| 650 nm |
29.20 |
26.00 |
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Calculated Relative Intensity Colors of Pararsenolamprite in Air
Relative
Intensity |
0% |
30% |
60% |
90% |
100% |
120% |
150% |
180% |
210% |
220% |
| R1 |
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| R2 |
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Calculated Relative Intensity Colors of Pararsenolamprite in Oil
Relative
Intensity |
0% |
40% |
80% |
100% |
120% |
160% |
200% |
240% |
280% |
320% |
330% |
| R1 |
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| R2 |
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Calculated Properties of Pararsenolamprite
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| Electron Density: |
Bulk Density (Electron Density)=5.68 gm/cc
note: Specific Gravity of Pararsenolamprite =6.47 gm/cc.
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| Fermion Index: |
Fermion Index = 0
Boson Index = 1 |
| Photoelectric: |
PEPararsenolamprite = 94.31 barns/electron
U=PEPararsenolamprite x rElectron Density= 535.42 barns/cc.
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| Radioactivity: |
GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Pararsenolamprite is Not Radioactive |
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Pararsenolamprite Classification
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| Dana Class: |
01.03.02.02 (01)Native Elements |
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(01.03)with semi-metallic and non-metallic elements |
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(01.03.02)Dana Group |
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01.03.02.01 Arsenolamprite As Bmab 2/m 2/m 2/m |
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01.03.02.02 Pararsenolamprite! As Pmn2 or P 21nm Ortho |
| Strunz Class: |
01.CA.10 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.10 Arsenolamprite As Bmab 2/m 2/m 2/m |
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01.CA.10 Pararsenolamprite! As Pmn2 or P 21nm Ortho |
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Other Pararsenolamprite Information
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| References: |
NAME( AmMin, vol 87, p 998) PHYS. PROP.(AmMin, vol 87, p 998) OPTIC PROP.(AmMin, vol 87, p 998) |
| See Also: |
Links to other databases for Pararsenolamprite :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - GeoScienceWorld
4 - Google Images
5 - Google Scholar
6 - Handbook of Mineralogy (UofA)
7 - MinDAT
8 - Mineralienatlas (Deutsch)
9 - Online Mineral Museum
10 - QUT Mineral Atlas
11 - Ruff.Info
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Pararsenolamprite
As
Dana No: 01.03.02.02 Strunz No: 01.CA.10
Locality:
Notes:
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