Owl - coll. P.P. ATHENA

MINERALOGY
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Mineral:DANNEMORITE = MANGANOGRUNERITE
Formula:[]Mn2Fe2+5Si8O22(OH)2
Crystal System:Monoclinic
Group:Amphibole Group
References:MZ 12/4 (1990), 56; HB2/1 (1995); MM 61 (1997), 295
Comments:[] = vacancy

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