ATHENA MINERAL: Mineral Data; Pierre Perroud

ATHENA

MINERALOGY

Mineral:	PICROPHARMACOLITE
Formula:	Ca₄Mg(AsO₃OH)₂(AsO₄)₂(H₂O)₇.4H₂O
Crystal System:	Anorthic (Triclinic)
IMA Number:	1819
References:	BM 87 (1964), 169; Acta Cryst. B25, (1969), 1544; AM 61 (1976), 326; L 1 (1993), 8; HB4 (2000)
Type Locality:	Richelsdorf, Hessen, Germany

Picropharmacolite, xls = 8 mm
Duranus, Alpes-Maritimes, F
Photo E. Wenger, Coll. P.Perroud (now in NHM Geneva).
Schweizer Strahler, Vol.8, Nr.5, Februar 1989, pp. 216-230
M&F, No 175, Juin 1990, pp. 6-12.
See also: athena.unige.ch -> mineral pictures

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