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Konnert J A , Clark J R , Christ C L , American Mineralogist , 55 (1970) p.1911-1931, Crystal structure of strontioginorite, (Sr,Ca)2B14O20(OH)6.5H2O
View Additional jPOWD Structure files for Strontioginorite
[1]
Physical Properties of Strontioginorite
Cleavage:
{010} Perfect, {001} Good
Color:
Colorless.
Density:
2.25
Diaphaneity:
Transparent
Hardness:
2-3 - Gypsum-Calcite
Luster:
Greasy (Oily)
Streak:
white
Optical Properties of Strontioginorite
Gladstone-Dale:
CI meas= -0.069 (Fair) - where the CI = (1-KPDmeas/KC) CI calc= -0.032 (Excellent) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2308,KPDmeas= 0.239,KC= 0.2236 Ncalc = 1.5 - 1.52