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Golden Fossils by systemcat Golden Fossils :iconsystemcat:systemcat 8 1 Moldavite by Sayarein Moldavite :iconsayarein:Sayarein 11 2 Deep Reflection 1 by Dave2712 Deep Reflection 1 :icondave2712:Dave2712 12 0 Sangria Lace cabochon by songofabanshee Sangria Lace cabochon :iconsongofabanshee:songofabanshee 23 3 Ammonite by jant-photo Ammonite :iconjant-photo:jant-photo 22 4 Palette Springs by BigxCaliber Palette Springs :iconbigxcaliber:BigxCaliber 17 0 Scary caves by Kayrash Scary caves :iconkayrash:Kayrash 27 10 GeoRainbow by RubySummit GeoRainbow :iconrubysummit:RubySummit 22 2 Botswana Agate by songofabanshee Botswana Agate :iconsongofabanshee:songofabanshee 28 0 Prehnite with Epidote crystals by MihaiMargineanu Prehnite with Epidote crystals :iconmihaimargineanu:MihaiMargineanu 3 0 J99 by fuckindriver J99 :iconfuckindriver:fuckindriver 5 0 Ammonite section 2.0 by MarkM98 Ammonite section 2.0 :iconmarkm98:MarkM98 7 0 giant quartz by gloriouslayde giant quartz :icongloriouslayde:gloriouslayde 6 9 chrysocolla by Tails-N-Doll chrysocolla :icontails-n-doll:Tails-N-Doll 4 0 Ammonite by MarkM98 Ammonite :iconmarkm98:MarkM98 8 0 Tourmaline by Sayarein Tourmaline :iconsayarein:Sayarein 11 0
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Selenite [pronounced: sel·e·nite | \ˈse-lə-ˌnīt\] (CaSO4 2H20, Hydrous Calcium Sulfate or Calcium Sulfate Dihydrate) is a variety of Gypsum. Gypsum is one of the most common sulfate minerals found in the Earth’s rocks. Gypsum is formed from the crystallisation of evaporated ancient sea beds, lakes and hot water springs.

Selenite’s hardness on the Mohs scale is 2, its lustre is vitreous or pearly, its streak is white, and its system is monoclinic. Selenite forms in crystals which can be tabular (many-sided), bladed (fanlike), or blocky (cubic).  It is typically colourless, but sometimes contains pale tints due to inclusions. If impurities are present, gypsum may also appear to be red, brown, greenish or yellow. Impurities are other mineral inclusions such as, copper ores, sulfur and sulfides, silver, iron ores, coal, calcite, dolomite, and opal. Selenites can also occur in geodes alongside Quartz. Some specimens can be fluorescent or phosphorescent.

Selenite is a very soft stone and can be scratched with a fingernail. It will soften when exposed to humidity and will separate into thick flakes in water and dissolve.  It is readily cleaved into natural wands and sheets, and it often sold in this form. It is also somewhat flexible and can be bent with gentle pressure (e.g. Ram’s horn formations). Selenite has a natural thermal composition which makes it warm to touch.

Selenite is known as the Moonstone. Ancient cultures believed that transparent crystals waxed and waned with the moon. Since Selenite is quite translucent (it has a pearl-like lustre) it incorporates the word, Selene, meaning the moon (Selinete – Middle English; Selinites - Greek; Selenite - Roman).

Other names for Selenite include Maria Glass, Satin Spar, Desert Rose, and Sericolite.

Selenite has been used in window panes, such as in the Basilica of Saint Sabina in Rome. These days Selenite is often made into lamps, used in jewellery, and ornamentation. It is widely mined and is used as a fertiliser, and as the main constituent in many forms of plaster, blackboard chalk and wallboard.

Selenite is most notably found in Europe, USA, Brazil, Argentina, Mexico, Japan, and Australia.

Further reading:-
geology.com/minerals/gypsum.sh…
www.minerals.net/mineral/gypsum.aspx
geology.wikia.com/wiki/Selenite
www.memphisgeology.org/g_selenite.htm

Selenite submitted on DA.

Spires by Mountaineer47 Selenite by Sayarein Selenite Fibers by Forbiddenynforgotten Selenite by Jataksu Yellow Flowers and Selenite by wondrousbutstrange Selenite by Welanga




The Latest

Welcome to all new members and watchers! A Hello! to club-affiliates. And a big Thanks to all who have submitted to the club over the last few weeks. Your contributions are appreciated!

Updates

- Blog updated.
- Folders tidied.
- Favourites updated
- Featured Updated

Feel free to drop a note if you have any queries.

All the best!
Rockhounds Admin.




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Rockhounds Club

We'd love to see your Geological submissions...

Please submit to our RockHounds Gallery!

Please Note - The club has expanded to be more inclusive. We want to encourage all the interests people have around Geology. So, we do accept all submissions related to Geology. This includes Minerals, Rocks, Fossils, Man-made & Altered specimens, Gemstones & Lapidary Work, Volcanics, Caves, Mountains, Coast, Inspired Art and other things related to Geology that haven't been mentioned!

Joining and Submitting to the Group!

To Join: Simply select the 'Join' button at the top of the page. To help the community grow it would be much appreciated (although not expected) if members and watchers could list the group in journals or signatures or advertise in some other way.

If you do not wish to join, but still wish to follow the group select the 'deviantwatch' button.

To Submit Art: All deviations must be related to Geology. Meaning they must feature natural geology and not man-made structures (e.g. walls, buildings, pathways, gravestones, statues...etc.). Please use the 'submit art' button at the top of the page to submit. There should also be a tutorial on submissions to the left-side of the screen if you're feeling stuck.

Please note: All deviations need to be approved of first before they will appear in the gallery. There is no limit (currently) on how many deviations you can submit each week.

If you have questions be sure to note the club!

Comments


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:iconsukilucky:
Sukilucky Featured By Owner Nov 19, 2014  Hobbyist Photographer
Thank you so much for accept meHatsune Miku-10 (Appreciate)
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:iconstephls:
StephLS Featured By Owner Jun 27, 2014  Hobbyist Digital Artist
Are oil rig photos acceptable? As geology profession/scenery thingamajigs.
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:iconbohemiangypsy:
bohemiangypsy Featured By Owner Jun 28, 2014  Hobbyist General Artist
yes, it will be fine. You can submit it under other or mines.
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:iconstephls:
StephLS Featured By Owner Jun 28, 2014  Hobbyist Digital Artist
alright, thanks.
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:iconmauijam:
Mauijam Featured By Owner Jun 12, 2013  Hobbyist General Artist
Where is the join button its not showing...
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