Potassic-Fluororichterite, rare species, Italy
A nice specimen of a rare species, Potassic-fluororichterite from San Vito Quarry, Monte Somma, Napoli, Italy.
Potassic-Fluororichterite is (K,Na)(CaNa)Mg5[Si8O22]F2. It is named as per current IMA amphibole nomenclature (Burke and Leake 2004; Can. Mineral., 42, 1881-1883).
Measures 1.3 x 1 x 1 centimeter.
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