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Arsenic Mineral Data

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General Arsenic Information

Help on Chemical  Formula: Chemical Formula: As
Help on Composition: Composition: Molecular Weight = 74.92 gm
   Arsenic 100.00 %  As
           100.00 % 
Help on Empirical Formula: Empirical Formula: As
Help on Environment: Environment: In ore veins in crystalline rocks.
Help on IMA Status: IMA Status: Valid Species (Pre-IMA) Prehistoric
Help on Locality: Locality: Saxony, Great Britain. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: From the Greek, Arsenikon, a name originally applied to the mineral orpiment.
Help on Name Pronunciation: Name Pronunciation: Arsenic Say ARSENIC
Help on Synonym: Synonym: ICSD 16516
  PDF 5-632

Arsenic Image

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Comments: Bright, metallic, gray, crystalline aggregate or arsenic.
Location: Niederschlema, Saxony, Germany. Scale: Size Not Given.
© Lou Perloff / Photo Atlas of Minerals

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Comments: Botryoidal-concentric aggregate of arsenic with white calcite crystals.
Location: Schneeberg, Erzgebirge, Sachsen, Germany. Scale: 7 x 4 cm.
© Thomas Witzke / Abraxas-Verlag

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  Claudetite   Arsenic

Comments: Colorless prismatic crystal of claudetite on native arsenic.
Location: Jáchymov (St Joachimsthal), Krusné Hory (Erzgebirge), Západoceský Kraj, Bohemia, Czech Republic. Scale: Picture size 2 mm.
© Thomas Witzke / Abraxas-Verlag

Arsenic Crystallography

Help on Axial Ratios: Axial Ratios: a:c = 1:2.80626
Help on Cell Dimensions: Cell Dimensions: a = 3.768, c = 10.574, Z = 6; V = 130.01 Den(Calc)= 5.74
Help on Crystal System: Crystal System: Trigonal - Hexagonal Scalenohedral H-M Symbol (3 2/m) Space Group: R 3m
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 2.771(1), 1.879(0.26), 3.52(0.26),
Help on Forms: Forms:

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Help on Above

Forms: ( 1 0 4) ( 0 2 1) ( 0 1 2) ( 0 0 1)

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Physical Properties of Arsenic

Help on Cleavage: Cleavage: {0001} Perfect
Help on Color: Color: Lead gray, Gray, White.
Help on Density: Density: 5.7
Help on Diaphaneity: Diaphaneity: Opaque
Help on Fracture: Fracture: Uneven - Flat surfaces (not cleavage) fractured in an uneven pattern.
Help on Habit: Habit: Lamellar - Thin laminae producing a lamellar structure.
Help on Habit: Habit: Nodular - Tuberose forms having irregular protuberances over the surface.
Help on Habit: Habit: Reniform - "Kidney like" in shape (e.g.. hematite).
Help on Hardness: Hardness: 3.5 - Copper Penny
Help on Luminescence: Luminescence: Non-fluorescent.
Help on Luster: Luster: Metallic
Help on Magnetism: Magnetism: Nonmagnetic
Help on Streak: Streak: black

Optical Properties of Arsenic

Help on RL Anisotrophism: RL Anisotrophism: Distinct, yellow brown and light gray to yellowish gray.
Help on RL Pleochroism: RL Pleochroism: Feeble.
Help on Reflectivity Reflectivity
Standardized Intensity (100%) Reflection Spectra of Arsenic in Air
λ R1 R2  ∑ R1(λ)   ∑ R2(λ) 
 400 nm   53.90   58.40 
 420 nm   52.20   57.00 
 440 nm   50.50   55.60 
 460 nm   49.60   54.70 
 480 nm   48.90   54.20 
 500 nm   48.30   53.80 
 520 nm   47.80   53.40 
 540 nm   47.40   53.20 
 560 nm   47.20   52.90 
 580 nm   47.00   52.80 
 600 nm   46.90   52.70 
 620 nm   46.60   52.60 
 640 nm   46.40   52.60 
 660 nm   46.30   52.60 
 680 nm   46.40   52.70 
 700 nm   47.00   52.80 
Calculated Relative Intensity Colors of Arsenic in Air
   0%   20%   40%   60%   80% 100% 120% 140% 160% 180% 190%

Calculated Properties of Arsenic

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=5.06 gm/cc
note: Specific Gravity of Arsenic =5.74 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0
Boson Index = 1
Help on Photoelectric: Photoelectric: PEArsenic = 73.21 barns/electron
U=PEArsenic x rElectron Density= 370.20 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Arsenic is Not Radioactive

Arsenic Classification

Help on  Dana Class: Dana Class: (01)Native Elements
  (01.03)with semi-metallic and non-metallic elements
  (01.03.01)Arsenic group Arsenic As R 3m 3 2/m Antimony Sb R 3m 3 2/m Stibarsen SbAs R 3m 3 2/m Bismuth Bi R 3m 3 2/m Stistaite SnSb R 3m 3 2/m
Help on  Strunz Class: Strunz Class: 01.CA.05 01 - ELEMENTS (Metals and intermetallic alloys; metalloids and nonmetals; carbides, silicides, nitrides, phosphides)
  01.C - Metalloids and Nonmetals
  01.CA -Arsenic group elements
01.CA.05 Bismuth Bi R 3m 3 2/m
01.CA.05 Antimony Sb R 3m 3 2/m
01.CA.05 Arsenic As R 3m 3 2/m
01.CA.05 Stibarsen SbAs R 3m 3 2/m

Other Arsenic Information

Help on References: References: NAME( Sinkankas66) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(AntBidBlaNic1)
Help on See Also: See Also: Links to other databases for Arsenic :
1 - Am. Min. Crystal Structure Database
2 - Amethyst Galleries' Mineral Gallery
3 - Athena
4 - EUROmin Project
5 - Ecole des Mines de Paris
6 - Franklin Minerals(Dunn)
7 - GeoScienceWorld
8 - Google Images
9 - Google Scholar
10 - Handbook of Mineralogy (MinSocAm)
11 - Handbook of Mineralogy (UofA)
12 - MinDAT
13 - Mineral and Gemstone Kingdom
14 - Mineralienatlas (Deutsch)
15 - Online Mineral Museum
16 - QUT Mineral Atlas
17 - Ruff.Info
18 - Scandinavian mineral gallery

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Dana No: Strunz No: 01.CA.05





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