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Topaz - Mineralogical Record

Topaz - Mineralogical Record

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January - February Edition 1995 

Topaz occurs in a range of fluorine-rich silicate environments, from plutonic through volcanic, and very rarely metamorphic. Gem crystals in cavities form under more limited conditions, primarily in granite-derived pegmatites, greisens and rarer hydrothermal veins, as well as in some rhyolites. Such deposits worldwide produce a variety of habits and colors of this popular mineral and gemstone. This edition will teach you all about topaz & its properties. 

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