Sudoite - Cedec Valley - Gran Zebrù, Valfurva - Sondrio prov. - Lombardy - Italy

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Sudoite - Cedec Valley - Gran Zebrù, Valfurva - Sondrio prov. - Lombardy - Italy (#:MINS9015)

Several rare hexagonal pearly sudoite crystals up to 6 mm hosted in a porphyritic dyke outcropping along the side of Cima di Pale Rosse at about 3000 m amsl. Alpine mineral.

Formula :
Mg₂(Al,Fe^{3+>/sup>)₃[(OH)₈/AlSi₃O₁₀]}
System: monoclinic Hardness:2-3 Rarity:rare
Strunz id:VIII/H.23-10 - SILICATES
Name origin: Named by W. von Engelhardt, G. Müller, and H. Kromer in honor of Toshio Sudo (1911-2000), professor of mineralogy, University of Tokyo, Japan. He was an expert in clay mineralogy, especially in the alteration processes by which clay minerals are formed. The mineral tosudite is also named in his honor.

Specimen weight:90 gr.

Crystal size:Up to mm. 6

Overall size: 65mm x 50 mm x 18 mm

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Sudoite - Cedec Valley - Gran Zebrù, Valfurva - Sondrio prov. - Lombardy - Italy

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