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Claudetite Mineral Data

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General Claudetite Information

Help on Chemical  Formula: Chemical Formula: As2O3
Help on Composition: Composition: Molecular Weight = 197.84 gm
   Arsenic  75.74 %  As  100.00 % As2O3
   Oxygen   24.26 %  O
           ______        ______ 
           100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: As2O3
Help on Environment: Environment: Secondary oxidation product derived from realgar, arsenopyrite, or other arsenic-bearing minerals or as a sublimation product of mine fires. Dimorphous with arsenolite.
Help on IMA Status: IMA Status: Valid Species (Pre-IMA) 1868
Help on Locality: Locality: San Domingo mines, Algarve, Portugal. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for Frederick Claudet, the French chemist who first described naturally occurring material.
Help on Synonym: Synonym: ICSD 100434
  PDF 15-778

Claudetite Image

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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

Claudetite Crystallography

Help on Axial Ratios: Axial Ratios: a:b:c =0.4111:1:0.3496
Help on Cell Dimensions: Cell Dimensions: a = 5.339, b = 12.984, c = 4.5405, Z = 4; beta = 94.26° V = 313.89 Den(Calc)= 4.19
Help on Crystal System: Crystal System: Monoclinic - Prismatic H-M Symbol (2/m) Space Group: P 21/n
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 3.245(1), 3.454(0.5), 2.771(0.35),
Help on Forms: Forms:

Dbl Clk - Start-Stop Rotation
RMB - Cycle Display Modes
Drag1 - Manipulate Crystal
Drag2 - Resize

S - Stereo
I - Indicies
<space> - Start-Stop Rotation
F - Fit to Screen
M - Menu

Help on Above

Forms: ( 0 1 0) ( 1 1 1) ( 1 1 0)

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Physical Properties of Claudetite

Help on Cleavage: Cleavage: {010} Perfect
Help on Color: Color: Colorless, White.
Help on Density: Density: 3.85 - 4.15, Average = 4
Help on Diaphaneity: Diaphaneity: Transparent
Help on Fracture: Fracture: Flexible - Flexible fragments.
Help on Habit: Habit: Platy - Sheet forms (e.g. micas).
Help on Hardness: Hardness: 2.5 - Finger Nail
Help on Luster: Luster: Vitreous - Adamantine
Help on Streak: Streak: white

Optical Properties of Claudetite

Help on Gladstone-Dale: Gladstone-Dale: CI meas= 0.007 (Superior) - where the CI = (1-KPDmeas/KC)
CI calc= 0.052 (Good) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2228,KPDmeas= 0.2333,KC= 0.235
Ncalc = 1.9 - 1.98
Help on Optical Data: Optical Data: Biaxial (-), a=1.87, b=1.92, g=2.01, bire=0.1400, 2V(Calc)=78, 2V(Meas)=58. Dispersion strong, r > v.

Calculated Properties of Claudetite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=3.64 gm/cc
note: Specific Gravity of Claudetite =4.00 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.0001164526
Boson Index = 0.9998835474
Help on Photoelectric: Photoelectric: PEClaudetite = 53.81 barns/electron
U=PEClaudetite x rElectron Density= 195.82 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Claudetite is Not Radioactive

Claudetite Classification

Help on  Dana Class: Dana Class: (04)Simple Oxides
  (04.03)with a cation charge of 3+ (A+++2 O3)
  (04.03.10)Claudetite group Claudetite As2O3 P 21/n 2/m Bismite Bi2O3 P 21/c 2/m Stibioclaudetite! AsSbO3 P 21/n 2/m
Help on  Strunz Class: Strunz Class: 04.CB.45 04 - OXIDES (Hydroxides, V[5,6] vanadates, arsenites, antimonites, bismuthites, sulfites, selenites, tellurites, iodate
  04.C - Metal:Oxygen = 2:3, 3:5, and Similar
  04.CB -With medium-sized cations
04.CB.45 Claudetite As2O3 P 21/n 2/m
04.CB.45 Stibioclaudetite! AsSbO3 P 21/n 2/m

Other Claudetite Information

Help on References: References: NAME( Ford32) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Ford32)
Help on See Also: See Also: Links to other databases for Claudetite :
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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Dana No: Strunz No: 04.CB.45





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