Editors A. J. B. Thompson, J.F.H. Thompson, and K.P.E. Dunne released most of the 1996 text, updated in 2012, to the Internet in 2019 as a photo PDF. The Atlas of Alteration is a practical reference, which aids in the recognition and understanding of major alteration minerals. Atlas of Alteration consists of 49 mineral entries, which are the result of numerous contributions by international authors. Common characteristics of each mineral are described for outcrop, hand specimen and thin section.
The descriptions are complemented by a brief discussion and selected references. Each entry includes a full page color plate with outcrop/rock and thin section photographs. Examples are drawn from a variety of localities and mineral deposit types. Atlas of Alteration is enhanced by an introduction, which contains a comprehensive table linking the alteration minerals to ore deposit types. A table of optical information for use in thin section work completes the volume.
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