Building Blocks of the Earth : Rocks and Minerals
Object ID:
1917.8.135
Collection:
Natural History-Ladies of New London
Object Name:
Gypsum
Dimensions:
H-1.6 W-3.1 L-3.5 cm
Description:
Gypsum mineral classification: evaporite
small aggragate of gypsum crystals, brown (root like) veins cutting through sample.
Found:
Grand Rapids, Michigan
Chemical Composition:
Hydrated calcium sulfate
Crystal System:
Monoclinic
Specific Gravity:
2.35
Hardness:
02
Luster:
Vitreous
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