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Seraphinite

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Seraphinite

Chemical Composition : (Mg,Fe2+)5Al(Si3Al)O10(OH)8 Magnesium Iron Aluminum Silicate Hydroxide

Hardness :  2.0 – 2.5

Specific Gravity (Density) : 2.60 – 3.02 (g/cm3)

Refractive Index : 1.571 – 1.599 Biaxial ( + )

Seraphinite is the trade name of the gemmy green variety of the mineral Clinochlore. Clinochlore is the most common member of the Chlorite Group of minerals that includes Clinochlore and Chamosite. A chromium-rich variety of Clinochlore called Kämmererite has a beautiful, deep lavender to crimson color. Seraphinite often contains micaceous inclusions that exhibit a wavey chatoyancy similar to Charoite. Seraphinite is mainly found near the Bratsk and Lake Baikal region of Eastern Siberia, Russia.

Some localities for well-crystallized Clinochlore material are: in the USA, in the Emery mine, Chester, Hampden Co., Massachusetts; at Texas, Lancaster County, and West Chester, Chester County, Pennsylvania; in the Tilly Foster mine, Brewster, Putnam County, New York. In the Zillertal, Tirol, Austria. From the Patschtal, Trentino-Alto Adige; Val Malenco, Lombardy; and at Ala, Piedmont, Italy. Near Zermatt, Valais, Switzerland. From Ojen, Malaga Province, Spain. On Unst, Shetland Islands, Scotland. In the Kop Krom [chrome mine], Kop Mountains, near Askale, Turkey. In Russia, in the Ural Mountains, at Akhmatovsk, Berbliouchka, and Hardadinsk; and at Miass, Ilmen Mountains, Southern Ural Mountains.

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