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Ballirano P , Merlino S , Bonaccorsi E , Maras A , The Canadian Mineralogist , 34 (1996) p.1021-1030, The crystal structure of liottite, a six-layer member of the cancrinite group
Physical Properties of Liottite
Cleavage:
None
Color:
Colorless.
Density:
2.56
Diaphaneity:
Transparent
Habit:
Prismatic - Crystals Shaped like Slender Prisms (e.g. tourmaline).
Hardness:
5 - Apatite
Luster:
Vitreous (Glassy)
Streak:
white
Optical Properties of Liottite
Gladstone-Dale:
CI meas= 0.014 (Superior) - where the CI = (1-KPDmeas/KC) CI calc= 0.033 (Excellent) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2027,KPDmeas= 0.2066,KC= 0.2096 Ncalc = 1.54 - 1.55
Optical Data:
Uniaxial (-), e=1.528, w=1.53, bire=0.0020.
Calculated Properties of Liottite
Electron Density:
Bulk Density (Electron Density)=2.54 gm/cc note: Specific Gravity of Liottite =2.56 gm/cc.
Fermion Index:
Fermion Index = 0.0073415646 Boson Index = 0.9926584354
Photoelectric:
PELiottite = 3.31 barns/electron U=PELiottite x relectron= 8.41 barns/cc.
Radioactivity:
GRapi = 60.35 (Gamma Ray American Petroleum Institute Units)
Concentration of Liottite per GRapi unit = 1.66 (%)
Estimated Radioactivity from Liottite - barely detectable