Gypsum : CaSO4·2H2O
As recorded:
Red River Floodway, Winnipeg, Manitoba Province, Canada.
100mm x 35mm x 35mm
weight: 90g
Gemmy Gypsum of dark amber colour with numerous lamellar crystals, up to 2.7 cm in size, at the tips of numerous cores typical of shallow depth specimens. Very nice fluorescence (see the Fluorescent minerals section) and phosphorescence. Very minor damage to some lamellar crystals (missing section).
Mineral(s)
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