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Eastonite (of Winchell)

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Formula:
K
 
2
Mg
 
5
Al
 
4
Si
 
5
O
 
20
(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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Physical Properties of Eastonite (of Winchell)

Colour:Black
Cleavage:Perfect
Perfect

Chemical Properties of Eastonite (of Winchell)

Formula:
K
 
2
Mg
 
5
Al
 
4
Si
 
5
O
 
20
(OH)
 
4
Simplified for copy/paste:K2Mg5Al4Si5O20(OH)4
Essential elements:Al, H, K, Mg, O, Si
All elements listed in formula:Al, H, K, Mg, O, Si

Other Information

Health Warning: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)

Search Engines:
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  • Rare and Unusual minerals at Mineralogical Research Company
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  • Buy from Dave Bunk Minerals
  • Fine Minerals from Weinrich Minerals, Inc.
  • Fine minerals from bisbeeborn.com
  • Buy from McDougall Minerals
  • Eastonite (of Winchell) specimens for sale - minfind.com
  • DAKOTA MATRIX offers Cabinet and Rare Species from Worldwide Localities.
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