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Schorl

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schorl [shȯrl]
(mineralogy)

Schorl 

a mineral, a black ferruginous variety of tourmaline with isomorphic admixtures of magnesium, manganese, and trivalent iron (seeTOURMALINE). Schorl is found in granites, pegmatites, greisens, skarns, gneisses, hydrothermal veins, and various metamorphic shales.



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The black tourmaline, known as schorl, is believed by many esoteric people to have special powers and is often used in esoteric rituals.
When in association with beryl and/or emerald, the tourmaline is dravite to uvite, otherwise it is schorl.
 
 
 
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