Secondary oxidation product derived from realgar, arsenopyrite, or other arsenic-bearing minerals or as a sublimation product of mine fires. Dimorphous with arsenolite.
IMA Status:
Valid Species (Pre-IMA) 1868
Locality:
San Domingo mines, Algarve, Portugal. Link to MinDat.org Location Data.
Name Origin:
Named for Frederick Claudet, the French chemist who first described naturally occurring material.
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Physical Properties of Claudetite
Cleavage:
{010} Perfect
Color:
Colorless, White.
Density:
3.85 - 4.15, Average = 4
Diaphaneity:
Transparent
Fracture:
Flexible - Flexible fragments.
Habit:
Platy - Sheet forms (e.g. micas).
Hardness:
2.5 - Finger Nail
Luster:
Vitreous - Adamantine
Streak:
white
Optical Properties of Claudetite
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
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
Electron Density:
Bulk Density (Electron Density)=3.64 gm/cc note: Specific Gravity of Claudetite =4.00 gm/cc.
Fermion Index:
Fermion Index = 0.0001164526 Boson Index = 0.9998835474
Photoelectric:
PEClaudetite = 53.81 barns/electron U=PEClaudetite x rElectron Density= 195.82 barns/cc.
Radioactivity:
GRapi = 0 (Gamma Ray American Petroleum Institute Units) Claudetite is Not Radioactive
Chemical Formula: 