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Secondary bismuth and tellurium minerals from Redziny, SW Poland


, : Secondary bismuth and tellurium minerals from Redziny, SW Poland. Mineralogia Polonica 34(2): 3-14

In the dolostone quarry at Redziny (Rudawy Janowickie Range, Lower Silesia, SW Poland) a set of secondary bismuth and tellurium minerals have recently been found. The presence of bismite Bi (sub 2) O (sub 3) , bismutite (BiO) (sub 2) CO (sub 3) , eulytite Bi (sub 4) (SiO (sub 4) ) (sub 3) , pingguite Bi (sub 6) Te (sub 2) O (sub 13) and tellurite TeO (sub 2) was detected by X-ray powder diffraction and/or electron microprobe methods. These minerals were formed as a result of progressive weathering of native bismuth and a bismuth sulphotelluride - joseite Bi (sub 4) TeS (sub 2) . The mutual genetic relations among the minerals have revealed that native bismuth is the predecessor of bismite and younger bismuthite. Pingguite is the first oxidation product of joseite, while eulytite and tellurite represent more advanced stage of this process.


Accession: 019963618

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