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RM2934 Analcime
Na(AlSi2O6)·H2O
Druse of analcime crystals, very brilliant, transparent, and with very well-defined faces and edges. A specimen of fine quality for this Italian locality. 3k1d4
Size: 7 x 4.8 x 4.4 cm.
Main crystal: 4.5 mm.
Ex. Max Caldera
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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.
Size: 6.7 x 5.6 x 4 cm.
Main crystal: 1.5 mm.
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