General Information:
Chemical Formula:Ca(UO2)2[Si5O12(OH)2]·4.5(H2O)
Composition:(Molecular Weight = 1,078.71 gm)Calcium 3.72 %
CaUranium 44.13 %
U Silicon 15.62 %
SiHydrogen 0.93 %
H Oxygen 35.60 %
O Empirical Formula: Ca(UO2)2Si6O15·5(H2O)
Environment:Secondary, oxidation product.
IMA Status:Approved IMA 1959
Locality:Haiwee Reservoir, Inyo Co. California.
Name Origin:Named after it's locality.
Physical Properties: Cleavage:[001] Good
Color:greenish yellow or light yellow.
Density:2.86 - 3.35, Average = 3.1
Habits:Microscopic Crystals - Crystals visible only with microscopes., Spherical - Spherical, rounded aggregates., Aggregates - Made of numerous individual crystals or clusters.
Hardness:3.5 - Copper Penny
Luster:Pearly
Streak:white
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