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Eastonite (of Winchell)

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Formula:
K2Mg5Al4Si5O20(OH)4
Colour:
Black
Name:
From Easton, Pennsylvania
A variety of Biotite

A name for the Biotite end-member.

Classification of Eastonite (of Winchell)

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http://www.mindat.org/min-6781.html
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Physical Properties of Eastonite (of Winchell)

Colour:
Black
Cleavage:
Perfect
Perfect

Chemical Properties of Eastonite (of Winchell)

Formula:
K2Mg5Al4Si5O20(OH)4
Essential elements:
All elements listed in formula:

Other Information

Health Risks:
No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.

Internet Links for Eastonite (of Winchell)

Mineral and/or Locality  
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