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ATHENA

MINERALOGY

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Mineral: TSILAISITE
Formula: NaMn2+3Al6(Si6O18)(BO3)3(OH)3(OH)
Crystal System: Rhombohedral (Trigonal) pseudo Hexagonal
Group: Tourmaline group
IMA Number: 2011-047
References: AM 70 (1985), 877; AM 71 (1986), 1214. CM 44 (2006), 1557; AM 96 (2011), 895; AM 97 (2012), 989; MM 79 (2015), 89
Type Locality: Tsilaisina, Sahatany Valley, Ibity Mt, Vakinankaratra, Betafo-Antsirabé region, Antananarivo Province, Madagascar

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