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Geology:
Rocks, Minerals & Ores

Metallic Oxides

Turquoise

copper aluminum phosphate
Cerbat Mountains, Kingman, AZ
Cerbat Mountains turquoise

Arizona.--In Arizona turquoise ranks first in terms of value of production and is also the best known of its gem materials. As stated earlier, nearly all important deposits of turquoise are located near copper occurrences or in copper deposits in arid desert regions of the world. Thus, the world famous turquoise deposits associated with certain of the large Arizona copper deposits are to be expected. Turquoise is or has been mined from a number of these copper mines as a byproduct, usually by outside contractors.

The financial and operating terms of the collecting contracts vary from mine to mine. Some of the operations are little more than the efforts of individual commercial collectors. Some are essentially full-scale mining operations that are simultaneous with, but separate from, the regular mining operations; and still others operate on an on-call basis as turquoise is uncovered by the regular copper mining operation. Regardless of the size or the sophistication of the initial mining or recovery operation, the actual turquoise is recovered by careful extraction using hand methods.

-USGS


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Metallic Oxides


ecology: wildlife - plants - geography: places - MAPS - map/sat - roads & trails: route 66 - old west - communities - weather - book store
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