透石膏

透石膏（英语：selenite），又称透明石膏，是石膏的亞種，主要成分为二水合硫酸钙（CaSO4·2H2O）。其英文名源于希腊语selēnitēs (lithos)，意思为“来自月亮的石头”。

参考文献
外部链接
*[http://ngm.nationalgeographic.com/2008/11/crystal-giants/shea-text Cavern of Crystal Giants] Cueva de los Cristales, Peñoles Mine, Naica, Chihuahua, Mexico
*[http://www.mindat.org/show.php?id=1784&ld=1&pho= Mindat.org] - scientific description of gypsum plus list of localities
*[http://www.mindat.org/min-8573.html Mindat.org - satin spar localities]
*[http://www.minsocam.org/MSA/collectors_corner/arc/naicagyp.htm 1927 article on the giant crystals of Naica]
*[http://www.telegraph.co.uk/news/picturegalleries/theweekinpictures/3331785/The-week-in-pictures-31-October-2008.html?image=29 Image of huge crystals of selenite]

参见

• 石膏