Today's Specimen: Moganite
Moganite is a tectosilicate mineral, originally found in Mogán, Canary Islands. Moganite is usually grey in colour. In 1994 the International Mineralogical Association (IMA) declassified moganite as an official mineral, since it was virtually impossible to differentiate from quartz. In 1999, moganite was reclassified as a mineral species by the IMA. Moganite has the same chemical composition as quartz (SiO2), but forms in a different structure. Moganite can be found across European countries, as well as the USA and India. It has a usual hardness of 6.0 on the Mohs scale, and can be utilized much the same as quartz.
More about moganite here.
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