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Lately, the new mineral schizolite (NaCaMnSi3O8(OH)) was re-instated as a valid species. This new mineral of the serandite-pectolite series was previoulsy labelled marshallsussmanite from 2013 to 2018. The later name was dropped and replaced by schizolite.

Poudrette Quarry, Mont Saint-Hilaire Book

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The latest book about the history, geology and mineralogy of the Poudrette Quarry, Mont Saint-Hilaire, Quebec, Canada, has been published late 2019 by the Mineralogical Association of Canada as Special Publication #14 under The Canadian Mineralogist.
Dioptase: an emerald-green to blue-green gemmy mineral species The mineral species Dioptase is a trigonal cyclosilicate, CuSiO3 · H2O. Cyclosilicates belong to the larger class of silicate minerals.

Azurite: a fascinating mineral species

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Azurite: a fascinating mineral species
Beryl: an exceptional gemmy mineral species
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