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Argentian mercurian tetrahedrite, a new variety, from the Chiprovtsi ore deposit, Western Stara-Planina mountains, Bulgaria

Published online by Cambridge University Press:  05 July 2018

Vassil At. Atanasov
Vassil At. Atanasov*
Affiliation:
Higher Institute of Mining and Geology, Sofia 56, Bulgaria
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Summary

An electron-probe microanalysis of tetrahedrite occurring together with the latest-deposited pyrite-cinnabar association in the Chiprovtsi lead-silver deposit yielded more than 16 wt. % Ag and more than 18 wt. % Hg. X-ray powder examination established an extremely large unit-cell edge, a 10.64±0.01 Å. Vickers microhardness 223 to 237 kg/mm2. The chemical formula derived on the basis of the analyses made is quite near to Cu6+(Cu+, Ag+)4(Hg,Zn)2(Sb,As)4S13. There is not any antiparallelism between Ag and Hg in tetrahedrite. The name proposed for all stages of simultaneous isomorphic replacement along the Cu+-Ag+ and Cu2+-Hg2+(Zn2+,Fe2+) directions is argentian mercurian tetrahedrite. The upper limits of the Ag and Hg content are expected to be Cu6Ag4Hg2(Sb,As)4S13. It is the six copper atoms (Cu4+;Cu22+), sited in the Laves’ polyhedra, that are replaced by Ag+ and Hg2+ respectively.

Type
Research Article
Information
Mineralogical Magazine , Volume 40 , Issue 311 , September 1975 , pp. 233 - 237
Copyright
Copyright © The Mineralogical Society of Great Britain and Ireland 1975

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References

[Atanasov, (V. A.)] (Ann. É;cole Sup. Mines Géol. Sofia), 17, fasc. 2, 248-66.Google Scholar
[Belov, (N. V.)] (Min. Mag. Lvov Univ.), 6, 21-34.Google Scholar
Berry, (L. G.) and Thompson, (R. M.), 1962. Geol. Soc. Amer. Mere. 85 (The Peacock Atlas).Google Scholar
Dimitrov, (C.), 1964. Ber. Geol. Ges. D.D.R. 9, Heft 2.Google Scholar
[Indolev, (L. N.), Nevoisa, (G. G.), and Bryzgalov, (I. A.)] CCCP. (Compt. Rend. Acad. Sci. URSS), 199, 1146-9.Google Scholar
[Kostov, (I. N.)] (Mem. All-Union Min. Soc.), 86, 336-42.Google Scholar
[Lazarenko, (E. K.)] (Min. Mag. Lvov. Univ.), 10, 171-211.Google Scholar
[Mincheva-Stefanova, (I.), Gorova, (M.), and Pavlova, (M.)] 1964. (Review of the Bulgarian Geol. Soc.), 25, 181-6.Google Scholar
Pauling, (L. S.) and Neuman, (E. W.), 1934. Zeits. Krist. 88, 54-62.[M.A. 6-39].Google Scholar
[Sakharova, (M. S.)] CaxaρoBa, (M. C.) 1966. (Geol. ore-deposits), 8, 23-40.Google Scholar
Shimada, (N.) and Hirowatari, (F.), 1972. Japan Min. Journ. 7, 77-87.Google Scholar
Springer, (G.), 1967. Fortschr. Min. 45, 103-24.Google Scholar
Springer, (G.), 1969. Neues Jahrb. Min. Monatsh. 1-48.Google Scholar
Wuensch, (B. I.), 1964. Zeits. Krist. 119, 437-53.CrossRefGoogle Scholar