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January-February 2009

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Mineral Oddities

Theme of the 2009 Tucson Gem & Mineral Show

The theme of the 2009 Tucson Gem and Mineral Show is Mineral Oddities, and it is not difficult to make a list of them. It is, in fact, a bigger problem to draw a line between the plethora of mineralogical curiosities that are certainly out of the norm but have not risen to the level of real “oddities,” and the true oddities themselves. As one contemplates the oddity list, some obvious general categories emerge into which most will naturally fall. These include crystallographic, optical, size, peculiar pseudomorphs, associations, inclusions and intergrowths, form or state, occurrence, provenance, and perhaps even “who”—those likable though odd personalities that seem to haunt the mineral hobby and profession.
Dr. Robert B. Cook, an executive editor of Rocks & Minerals, is a professor emeritus in the Department of Geology and Geography at Auburn University, Auburn, Alabama.

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