Minerals identify

Know how to recognize them

Sugilite

Cyclosilicate

Sugilite (/ˈsuːɡɪlaɪt/ SOO-gi-lyt ) is a relatively rare pink to purple cyclosilicate mineral with the complex chemical formula K )2Li 30. 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 to 2.80. It is mostly translucent.

Sugilite was first described in 1944 by the Japanese petrologist Ken-ichi Sugi (1901–1948) for an occurrence on Iwagi Islet, Japan syenite. It is found in a similar environment at Mont Saint-Hilaire , Quebec. In the Wessels mine in Northern Cape Province, sugilite is mined from a strata-bound deposit. It is also reported from Liguria; New South Wales and Madhya Pradesh

Note: The mineral is commonly pronounced with a soft "g", as in "ginger". However, as with most minerals, its pronunciation is intended to be the same as the person it is named after; in this case, the Japanese name Sugi has a hard "g", as in "geese".

The mineral is also referred to as lavulite, luvulite, and royal azel by gem and mineral collectors.

Identification

Color of mineral

Brown
Yellow
Purple
Violet
Red
Pink

Mohs scale ( mineral hardness )

6

Density ( specific gravity )

1.61
1.607

Luster ( interacts light )

Vitreous

Crystal ( diaphaneity )

Hexagonal