Mimetite.(Brief Article)
From: Rocks & Minerals
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Date: 3/1/2001
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Author: Cook, Robert B.
Tsumeb, Namibia
To many collectors, color and crystal development are two of the most important factors in determining the desirability of specimens. Although crystal size and perfection are dependent upon a number of parameters, not the least of which are typically the constraints of temperature and pressure, color is frequently a function of chemistry. Nature's most colorful minerals are often secondary; that is, they are the alteration products of less-colorful primary ...
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