andradite

A Dictionary of Earth Sciences | 1999 | 422 words | Copyright

andradite Member of the garnet group of minerals, Ca₃Fe₂(SiO₄)₃; sp. gr. 3.75; hardness 6.5–7.5; cubic; yellow, greenish, or brownish-red, to black; greasy to vitreous lustre; most crystals dodecahedral; occurs widely in metamorphic and igneous rocks often as a result of metasomatism, also in beach sands and alluvial placers. Transparent crystals are used as gemstones, and the mineral can be used as an abrasive.

Cite this article
Pick a style below, and copy the text for your bibliography.

AILSA ALLABY and MICHAEL ALLABY. "andradite." A Dictionary of Earth Sciences. 1999. Encyclopedia.com. 27 May. 2012 <http://www.encyclopedia.com>.

AILSA ALLABY and MICHAEL ALLABY. "andradite." A Dictionary of Earth Sciences. 1999. Encyclopedia.com. (May 27, 2012). http://www.encyclopedia.com/doc/1O13-andradite.html

AILSA ALLABY and MICHAEL ALLABY. "andradite." A Dictionary of Earth Sciences. 1999. Retrieved May 27, 2012 from Encyclopedia.com: http://www.encyclopedia.com/doc/1O13-andradite.html