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Title: Encyclopedia of Minerals and Gemstones
Author: Michael O'Donoghue
Publisher: Orbis Publishing Ltd.,London 1976
The first half of the book is a fundamental text on geology with some information on gemstones and polishing. It is organized around the idea that the reader is a collector. The second half of the book is a listing of minerals organized by chemistry. There are many small photos that are of good quality , but not one for each listing.The mineralogical data is not complete for every specimen, but it has the formulae, name, and some additional data. One good feature is a "very short" line that describes methods to clean specimens for display. Despite its age, it is a good reference book.
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