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Bindi L , Cipriani C , The Canadian , Mineralogist (2003) p.1469-1473, The crystal structure of winstanleyite, TiTe3O8, from the, Grand Central Mine, Tombstone, Arizona, Locality: Grand Central Mine, Tombstone, Arizona
Physical Properties of Winstanleyite
Cleavage:
None
Color:
Yellow, Light brown.
Density:
5.57
Diaphaneity:
Transparent
Fracture:
Tough - Difficult to break apart as shown by fibrous minerals and most metals.
Habit:
Cubic Crystals - Occurs as cubic shaped crystals.
Habit:
Octahedral Crystals - Occurs as octahedral shaped crystals.
Hardness:
4 - Fluorite
Luster:
Adamantine
Streak:
light yellow
Optical Properties of Winstanleyite
Gladstone-Dale:
CI meas= -0.053 (Good) - where the CI = (1-KPDmeas/KC) CI calc= -0.042 (Good) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.238,KPDmeas= 0.2406,KC= 0.2285 Ncalc = 2.27 - 2.29
Optical Data:
Isotropic, n=2.34.
Calculated Properties of Winstanleyite
Electron Density:
Bulk Density (Electron Density)=4.88 gm/cc note: Specific Gravity of Winstanleyite =5.63 gm/cc.
Fermion Index:
Fermion Index = 0.06 Boson Index = 0.94
Photoelectric:
PEWinstanleyite = 244.25 barns/electron U=PEWinstanleyite x rElectron Density=1,191.31 barns/cc.
Radioactivity:
GRapi = 0 (Gamma Ray American Petroleum Institute Units) Winstanleyite is Not Radioactive