Owl - coll. P.P. ATHENA

MINERALOGY
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Mineral:PORTLANDITE
Formula:Ca(OH)2
Crystal System:Hexagonal
Strunz Nr:4/F.03-100
Group:Brucite Group
References:MM 23 (1933), 419; AM 19 (1934), 35; HB3 (1997)
Type Locality:Scawt Hill, Co. Antrim, Northern Ireland

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