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Mineral found in S. A. mountains
Answer for the clue "Mineral found in S. A. mountains ", 8 letters:
andesine
Word definitions for andesine in dictionaries
Wiktionary
Word definitions in Wiktionary
n. (context mineral English) sodium calcium aluminum silicate, ( Na_xCa_xAlSi_3O_8 ), a plagioclase feldspar, the third member of the albite-anorthite solid solution series. Found in fine-grained andesite lavas; crystals are rarely seen.
Wikipedia
Word definitions in Wikipedia
Andesine is a silicate mineral , a member of the plagioclase feldspar solid solution series. Its chemical formula is ( Ca , Na )( Al , Si ) O , where Ca/(Ca + Na) (% Anorthite ) is between 30%-50%. The formula may be written as NaCaAlSiO. The plagioclase ...
The Collaborative International Dictionary
Word definitions in The Collaborative International Dictionary
Andesine \An"des*ine\, n. (Min.) A kind of triclinic feldspar found in the Andes.