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Sugilite
Sugilite

Sugilite (also known as luvulite) is a relatively rare pink to purple cyclosilicate mineral with the complex chemical formula: KNa2(Fe,Mn,Al)2Li3Si12O30. Sugilite crystallizes in the hexagonal system with prismatic crystals. The crystals are rarely found and the form is usually massive. It has a Mohs hardness of 5.5 to 6.5 and a specific gravity of 2.75 - 2.80. Mostly translucent.

Sugilite was first described in 1944 by the Japanese petrologist Ken-ichi Sugi (1901-1948) for an occurrence on Iwagi Islet, Japan where it is found in an aegirine syenite intrusive stock. It is found in a similar environment at Mont Saint-Hilaire, Quebec, Canada. In the Wessels mine in northern Cape Province of South Africa sugilite is mined from a strata-bound manganese deposit. It is also reported from Liguria and Tuscany, Italy; New South Wales, Australia; and Madhya Pradesh, India.

Note: This mineral is commonly mispronounced with a soft G, as in ginger, when indeed its correct pronunciation uses a hard G, as in geese. As with most minerals, it's pronunciation is the same as the person's name it is named after. In this case, Sugi, in which the proper Japanese pronunciation would be SUE-gee, with a hard G.

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