Chemistry and classification of minerals of tetrahedrite group from deposits of Bolivia
Keywords
Abstract
The quantitative study of chemical composition of ten samples of the tetrahedrite group minerals from six deposits in Bolivia (Animas - Chocaya, Pulacayo, San Vicente, Machacamarca, Cerro Rico, Oruro) provided new data enabling their detailed classification within this group. The majority of samples are usual members of tetrahedrite group: tennantite-(Zn) (San Vicente, Oruro), tetrahedrite-(Zn) (Animas - Chocaya, Pulacayo, San Vicente, Cerro Rico, Oruro) and tetrahedrite-(Fe) (Pulacayo, Machacamarca, Cerro Rico). The recently redefined members of this group - argentotetrahedrite-(Fe) and kenoargentotetrahedrite-(Fe) were found in samples from Cerro Rico and Animas - Chocaya deposits, respectively. The descriptions and quantitative EPMA data for all studied samples are given in the paper.
Online 15.7.2023
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References
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