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(Mg,Fe)7Si8O22(OH)2

Posted by Ano in Picture on June 20, 2009


Cummingtonite or magnesium iron silicate hydroxide is a metamorphic amphibole with the chemical composition (Mg,Fe)7Si8O22(OH)2.

Le type qui a trouvé le nom doit être trop fier de lui.

via Wikipedia

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