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Line 1: − + − + − *Chesterman, Charles W. ''The Audubon Society Field Guide to North American Rocks and Minerals'', Alfred A. Knopf: New York (1987)+ +
→References: clean up & uniformity
A '''brittle''' [[mineral]] is easily broken into a [[powder]] by cutting or hammering. Chesterman, p. 32
A '''brittle''' [[mineral]] is easily broken into a [[powder]] by cutting or hammering.<ref>Chesterman, Charles W. ''The Audubon Society Field Guide to North American Rocks and Minerals'', Alfred A. Knopf: New York (1987)</ref>
=Sources=
==References==
<references/>
[[Category:Minerals]]