No. 2 - Gypsum
Gypsum is number 2 on the Mohs Hardness Scale. It is the primary ingredient in plaster and wall board.
Specimen is approximatley 2 inches long. From Syracuse, New York.
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Uploaded on January 19, 2009
Taken on January 18, 2009
No. 2 - Gypsum
Gypsum is number 2 on the Mohs Hardness Scale. It is the primary ingredient in plaster and wall board.
Specimen is approximatley 2 inches long. From Syracuse, New York.
361
views
0
faves
0
comments
Uploaded on January 19, 2009
Taken on January 18, 2009