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A '''druse''' [[Mineral Aggregates|mineral aggregate]] is a coating or crust of small projecting [[crystals]] on the wall of [[Mineral Vein|vein]] or [[Mineral Cavity|cavity]]. [[Quartz]] is an example of a [[mineral]] exhibiting a druse form. Chesterman, p. 40

=Sources=
*Chesterman, Charles W. ''The Audubon Society Field Guide to North American Rocks and Minerals'', Alfred A. Knopf: New York (1987)
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