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ATHENA

MINERALOGY

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Mineral: WILLHENDERSONITE
Formula: K0-1Ca1,5-1[Al3Si3O12].5H2O
Crystal System: Anorthic (Triclinic)
Group: Zeolite group
IMA Number: 1981-030
References: AM 69 (1984), 186; HB2/2 (1995); EJM 10 (1998), 1037
Type Locality: San Venanzo quarry, Terni, Umbria, Italy

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