Help mindat.org|Log In|Register|
Home PageMindat NewsThe Mindat ManualHistory of MindatCopyright StatusManagement TeamContact UsAdvertise on Mindat
Donate to MindatSponsor a PageSponsored PagesTop Available PagesMindat AdvertisersAdvertise on Mindat
Minerals by PropertiesMinerals by ChemistryAdvanced Locality SearchRandom MineralSearch by minIDLocalities Near MeSearch ArticlesSearch GlossaryMore Search Options
Search For:
Mineral Name:
Locality Name:
Keyword(s):
 
The Mindat ManualAdd a New PhotoRate PhotosLocality Edit ReportCoordinate Completion ReportAdd Glossary Item
StatisticsThe ElementsMember ListBooks & MagazinesMineral Shows & EventsThe Mindat DirectoryHow to Link to MindatDevice Settings
Photo SearchPhoto GalleriesNew Photos TodayNew Photos YesterdayMembers' Photo GalleriesPast Photo of the Day Gallery

Selenite

This page kindly sponsored by Dawn Markus
Formula:
CaSO4 · 2H2O
Colour:
Colourless, light tints due to included matter
Lustre:
Vitreous
Name:
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 gemdat.org for gemological information about Selenite.


Hide all sections | Show all sections

Physical Properties of SeleniteHide

Vitreous
Transparency:
Transparent
Colour:
Colourless, light tints due to included matter
Fracture:
Micaceous

Chemical Properties of SeleniteHide

Formula:
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 mindat.org.
Quartz80 photos of Selenite associated with Quartz on mindat.org.
Calcite69 photos of Selenite associated with Calcite on mindat.org.
Halite59 photos of Selenite associated with Halite on mindat.org.
Siderite44 photos of Selenite associated with Siderite on mindat.org.
Limonite43 photos of Selenite associated with Limonite on mindat.org.
Aragonite35 photos of Selenite associated with Aragonite on mindat.org.
Malachite32 photos of Selenite associated with Malachite on mindat.org.
Pyrite32 photos of Selenite associated with Pyrite on mindat.org.
Chalcopyrite25 photos of Selenite associated with Chalcopyrite on mindat.org.

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

Mineral and/or Locality  
Mindat.org is an outreach project of the Hudson Institute of Mineralogy, a 501(c)(3) not-for-profit organization.
Copyright © mindat.org and the Hudson Institute of Mineralogy 1993-2017, except where stated. Mindat.org relies on the contributions of thousands of members and supporters.
Privacy Policy - Terms & Conditions - Contact Us Current server date and time: October 18, 2017 17:33:22 Page generated: October 18, 2017 09:19:31
Go to top of page