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Bindi L , Menchetti S , Mineralogy and Petrology , 85 (2005) p.131-139, Garavellite, FeSbBiS4, from the Caspari mine, North Rhine-Westphalia, Germany:, composition, physical properties and determination of the crystal structure, Locality: Caspari mine, North Rhine-Westphalia, Germany
Physical Properties of Garavellite
Color:
Gray.
Density:
5.64
Diaphaneity:
Opaque
Hardness:
4 - Fluorite
Luster:
Metallic
Optical Properties of Garavellite
RL Anisotrophism:
Strong, in yellowish green to bluish.
RL Color:
Gray with olive-brown tint.
RL Pleochroism:
Distinct.
Calculated Properties of Garavellite
Electron Density:
Bulk Density (Electron Density)=4.92 gm/cc note: Specific Gravity of Garavellite =5.65 gm/cc.
Fermion Index:
Fermion Index = 0.0041685563 Boson Index = 0.9958314437
Photoelectric:
PEGaravellite = 835.71 barns/electron U=PEGaravellite x rElectron Density=4,108.76 barns/cc.
Radioactivity:
GRapi = 0 (Gamma Ray American Petroleum Institute Units) Garavellite is Not Radioactive