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CaSO4 · 2H2O
Colourless, light tints due to included matter
From the Greek σελήυη, for "moon," in allusion to the moon-like white reflections of the mineral or to the quality of the light transmitted by semi-pellucid gypsum slabs of cleavages used as windows.
A variety of Gypsum

The name 'selenite' is mostly synonymous with gypsum but has been used historically to describe the transparent variety, as opposed to satin spar gypsum for the fibrous variety and alabaster for the fine-grained massive form.

The original name was given by J.G. Wallerius in his 1747 book "Mineralogia, eller Mineralriket" (p.50), as 'selenites'. Named from the greek 'σεληνη' (the moon), probably from its pale bluish reflections.

Visit for gemological information about Selenite.

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Physical Properties of SeleniteHide

Colourless, light tints due to included matter

Chemical Properties of SeleniteHide

CaSO4 · 2H2O

Synonyms of SeleniteHide

Other Language Names for SeleniteHide

Common AssociatesHide

Associated Minerals Based on Photo Data:
Dolomite83 photos of Selenite associated with Dolomite on
Quartz80 photos of Selenite associated with Quartz on
Calcite69 photos of Selenite associated with Calcite on
Halite59 photos of Selenite associated with Halite on
Siderite44 photos of Selenite associated with Siderite on
Limonite43 photos of Selenite associated with Limonite on
Aragonite35 photos of Selenite associated with Aragonite on
Malachite32 photos of Selenite associated with Malachite on
Pyrite32 photos of Selenite associated with Pyrite on
Chalcopyrite25 photos of Selenite associated with Chalcopyrite on

Other InformationHide

Health Risks:
No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.

References for SeleniteHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Wallerius, J.G. (1747) Mineralogia, eller Mineralriket. Stockholm: 50.
Cronstedt (1758) Försök til Mineralogie, eller Mineral-Rikets Upställning. 12mo, Stockholm: 18.
Palache, C., Berman, H., & Frondel, C. (1951), The System of Mineralogy of James Dwight Dana and Edward Salisbury Dana, Yale University 1837-1892, Volume II. John Wiley and Sons, Inc., New York, 7th edition, revised and enlarged, 1124 pp.: 482-486.

Internet Links for SeleniteHide

Localities for SeleniteHide

This map shows a selection of localities that have latitude and longitude coordinates recorded. Click on the symbol to view information about a locality. The symbol next to localities in the list can be used to jump to that position on the map.

Locality ListShow

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