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Planerite-Turquoise Series from
Turquoise Mine, Cripple Creek, Cripple Creek District, Teller Co., Colorado, USA

Description
Comments:Originally reported to be coeruleolactite. All purported coeruleolactite examined by the authors of the 1998 report (Foord, E.E. & Taggart, J.E.) were largely planerite, or Occasionally turquoise. Published analysis indicates that the vacany in the 'A' site is between 0.51-0.54 atom fraction, the balance in Cu-0.40 and Zn-0.06 to 0.09. It is suggested by this analysis that the turquoise structure likely cannot accomodate Ca in the 'A' site.
Quality of samples:not specified / average specimens
Confirmation
Validity:Believed Valid
References
References:[www.johnbetts-fineminerals.com]

Foord, E.E. & Taggart, J.E. (1998): A reexamination of the turquoise group; the mineral aheylite, planerite (redefined), turquoise and coeruleolactite. Mineralogical Magazine, 62, 93-111.
Data
Mineral Data:Click here to view Planerite-Turquoise Series data
Locality Data:Click here to view Turquoise Mine, Cripple Creek, Cripple Creek District, Teller Co., Colorado, USA
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