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GYPSUM #1 (detail)         Go on to: #1 | #2 | #3 | #4
Alabaster Gypsum
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Basic Key
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Composition

     CaSO4 . H2O; Hardness 1.5-2; Cleavage perfect one direction, distinct in other two (when visible); white, colorless, gray, yellow, red, brown; Luster pearly on cleavages.
Description
     Laminated alabaster gypsum. Gypsum takes on many forms, such as alabaster, selenite, satin spar, and rose gypsum.
  

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Last Update: 7/18/00

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