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Clintonite with Diopside

#57585

Clintonite with Diopside

#57585
Availability
Sold
Size
7 x 4.5 x 3 cm - Sm Cabinet 
Formula
CaAlMg2(SiAl3)O10(OH)2 (RRUFF)
Locality
Crestmore, Riverside Co., California, United States

Emerald green micaceous plates to 1.5cm.

Clintonite is a phyllosilicate - Monoclinic - Mica group member. It is a brittle Mica - Trioctahedral. Ca, Na, K occupies the Interlayer (I) positions while Mg, Fe2+, Al, Fe3+, Mn in the octahedral positions.

It occurs as tabular, pseudohexagonal, foliated crystals in association with calcite, idocrase, grossular, spinel, phlogopite in crystalline limestones i.e. Crestmore (Encycl. of Min.).

Clintonite

Formula
CaAlMg2(SiAl3)O10(OH)2 
Crystal System
Monoclinic 
Crystal Habit
Massive - Lamellar, Radial 
Cleavage
Perfect, None, None 
Luster
Pearly 
Color
colorless, green, yellow, red, reddish brown 
Streak
colorless 
Class
Monoclinic - Prismatic 
Fracture
Brittle 
Hardness
4-5 

Data courtesy of Webmineral.

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