Owl - coll. P.P. ATHENA

MINERALOGY
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Mineral:WILLHENDERSONITE
Formula:K0-1Ca1.5-1[Al3Si3O12] · 5H2O
Crystal System:Anorthic (Triclinic)
Strunz Nr:8/J.26-10
Group:Zeolite Group
References:AM 69 (1984), 186; HB2/2 (1995); EJM 10 (1998), 1037
Type Locality:San Venanzo quarry, Terni, Umbria, Italy

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