www.mineralgallery.co.za Minerals P-T Richterite
Name	Richterite
Chemistry	Na(CaNa)(Mg,Fe++)5[Si8O22](OH)2
Uses	As a lapidary stone.
Color	Blue, brown, brown red, gray violet, yellow
Hardness	6 - Orthoclase
Specific gravity	2.9 - 3.3
Streak	White
Crystals	Mostly massive
Accompanied by:	Sugilite, Bustamite, Manganese
Similar to:	Fluororichterite, Ferrorichterite, Sugelite, Tremolite
Richterite (also known as soda tremolite), derived its name from the German mineralogist Theodor Richter (1824-1898). This is a very rare manganese stone and belongs to the Amphibole Group of minerals.   It is mainly found in contact alkaline igneous rocks, metasomatic deposits, metamorphosed limestones, ultramafic igneous extrusives. It's mainly used for lapidary purposes.

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