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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
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)

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  • Fabre Minerals - search for Eastonite (of Winchell) specimens
  • Rare and Unusual minerals at Mineralogical Research Company
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    Copyright © Jolyon Ralph and Ida Chau 1993-2011. Site Map. Locality, mineral & photograph data are the copyright of the individuals who submitted them. Further information contact the Site hosted & developed by Jolyon Ralph. Mindat.org is an online information resource dedicated to providing free mineralogical information to all. Mindat relies on the contributions of hundreds of members and supporters. Mindat does not offer minerals for sale. If you would like to add information to improve the quality of our database, then click here to register.
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