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RM2887 Clinoptilolite-Ca
Ca3(Si30Al6)O72·20H2O
In a tuff andesitic volcanic rocky matrix we can observe several cavities that contain aggregates of colorless, bright clinoptilolite crystals. Specimens from this Italian locality are not common. 2u6835
Size: 6.7 x 5.6 x 4 cm.
Main crystal: 1.5 mm.
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