Gypsum (hand specimen)
|
Rating |
|
|
Name |
Gypsum (hand specimen) |
|
Type |
Mineral |
|
Chemical Formula |
CaSO4 ? 2H20 |
|
Crystal System |
Tabular crystals, prisms, blades, or needles |
|
Common Forms/Occurences |
Found in alabaster, satin spar, and selenite |
|
Colour |
Colourless, white, or gray |
|
Streak |
White |
|
Lustre |
Nonmetallic (NM) |
|
Cleavage |
Good |
|
Fracture |
Conchoidal |
|
Hardness |
2 |
|
Specific Gravity |
2.3 |
|
Useful Identification Test |
Soft; Shows better cleavage than talc |
|
Common Uses |
Plaster-of-paris, wallboard, drywall, art sculpture medium (alabaster |
|
Thin Section URL |
http://digicon.athabascau.ca/u?/RM,129 |
|
Subject |
Minerals; Rocks; Identification photographs; Geology; |
|
Date |
2008 |
|
Language |
en |
|
Format |
image/jpeg |
|
Resource Type |
image; stillimage |
|
Identifier |
rm0023 |
|
Collection Title |
Rock and Mineral Samples |
|
Repository |
AU Digital Library |
|
Rights |
Subject to the Copyright Act |
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