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Basso R , Cabella R , Lucchetti G , Martinelli A , Palenzona A , European Journal of Mineralogy , 17 (2005) p.501-507, Vanadiocarpholite, Mn2+V3+Al(Si2O6)(OH)4, a new mineral, from the Molinello mine, northern Apennines, Italy, Note: sample VC, Locality: Molinello mine, northern Apennines, Italy
Physical Properties of Vanadiocarpholite
Cleavage:
{010} Perfect
Color:
Pale straw yellow, Brown.
Diaphaneity:
Transparent
Fracture:
Flexible - Flexible fragments.
Habit:
Acicular - Occurs as needle-like crystals.
Luster:
Vitreous - Silky
Optical Properties of Vanadiocarpholite
Gladstone-Dale:
CI calc= 0.065 (Fair) - where the CI = (1-KPDcalc/KC) KPDcalc= 0.2189,KC= 0.2342 Ncalc = 1.74
Optical Data:
Biaxial (+), a=1.684, b=1.691, g=1.7, bire=0.0160
Calculated Properties of Vanadiocarpholite
Electron Density:
Bulk Density (Electron Density)=3.10 gm/cc note: Specific Gravity of Vanadiocarpholite =3.16 gm/cc.
Fermion Index:
Fermion Index = 0.0080098526 Boson Index = 0.9919901474
Photoelectric:
PEVanadiocarpholite = 7.49 barns/electron U=PEVanadiocarpholite x rElectron Density= 23.19 barns/cc.
Radioactivity:
GRapi = 0 (Gamma Ray American Petroleum Institute Units) Vanadiocarpholite is Not Radioactive