Gypsum Alberta
Gypsum Alberta
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Mineral name:Gypsum
Formula:CaSO4 · 2(H2O)
Category:Sulfate
Name Origin:From the Greek gyps meaning "burned" mineral
Uses:When gypsum is heated, it forms a white powder called plaster of Paris, which solidifies when mixed with water.
Diagnostic features:Its softness and its three unequal cleavages
Interesting facts:Gypsum can form as fibres or needles that radiate from a central point. This is known as daisy gypsum.
PROPERTIES
Colour:White or grey, but many more colours
Streak:White
Luster:Glassy
Hardness:2
Density:2.32
Form:Monoclinic
For more info on this mineral:http://webmineral.com/data/Gypsum.shtml
http://www.mindat.org/min-1784.html
THIS SAMPLE:
Name:Gypsum Alberta
Size: 
Came from:Willow Creek, near Calgary
Province:Alberta
Collection of:Canadian Museum of Nature
Photography by:Bob Gault
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