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Evans H T , Mrose M E , American Mineralogist , 40 (1955) p.861-875, A crystal chemical study of montroseite and paramontroseite.
Physical Properties of Paramontroseite
Cleavage:
{010} Good
Color:
Black.
Density:
4
Diaphaneity:
Opaque
Fracture:
Brittle - Generally displayed by glasses and most non-metallic minerals.
Luster:
Sub Metallic
Streak:
black
Optical Properties of Paramontroseite
Optical Data:
NCalc= 2.61 - from Gladstone-Dale relationship (KC = 0.393) where Ncalc=Dcalc*KC+1 NCalc= 2.57 - from Gladstone-Dale relationship (KC = 0.393) where Ncalc=Dmeas*KC+1
Calculated Properties of Paramontroseite
Electron Density:
Bulk Density (Electron Density)=3.85 gm/cc note: Specific Gravity of Paramontroseite =4.09 gm/cc.
Fermion Index:
Fermion Index = 0.0017206735 Boson Index = 0.9982793265
Photoelectric:
PEParamontroseite = 11.95 barns/electron U=PEParamontroseite x rElectron Density= 45.98 barns/cc.
Radioactivity:
GRapi = 0 (Gamma Ray American Petroleum Institute Units) Paramontroseite is Not Radioactive