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Crossite - Einberg, Seydegg, Abtenau, Salzburg, Austria (#:MINS7684)

Cluster of elongated blue crystals of Crossite up to 3 mm set richly on matrix

Formula :
Na2(Mg,Fe2+)3(Al,Fe3+)2[OH/Si4O11]2

System: monoclinic Hardness:6 Rarity:not common
Strunz id:VIII/F.8-30 - SILICATES
Name origin: Named in 1894 by Charles Palache for Charles Whitman Cross [September 1, 1854 Southampton near Amherst, Massachusetts - April 20, 1949 Chevy Chase, Maryland]. Cross was a petrologist the the United States geological Survey and was widely regarded as the greatest field petrologist of his generation. He was important in classifying igneous rocks, etc.-

Specimen weight:48 gr.
Crystal size:Up to 3 mm
Overall size: 38mm x 22 mm x 23 mm

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Crossite - Einberg,  Seydegg,  Abtenau,  Salzburg,  Austria

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