1992
DOI: 10.1007/bf01161565
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Tennantite decomposition: Evidence from the Kedabek copper deposit, Azerbaijan

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Cited by 5 publications
(4 citation statements)
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“…These occur where chalcopyrite and tennantite–tetrahedrite coexist, associated with galena, and fractured euhedral pyrite. Previous authors (Bortnikov et al 1993 ; Cook 1996 ) described similar textures and attributed them to decomposition due to changing As/Sb activities in the hydrothermal fluid, although the occurrence of these textures locally associated with fractured pyrite grains at the ABM deposit suggests the possibility of metamorphic origin (Miller and Craig 1983 ; Brueckner et al 2016 ).
Fig.
…”
Section: Observations and Resultsmentioning
confidence: 79%
“…These occur where chalcopyrite and tennantite–tetrahedrite coexist, associated with galena, and fractured euhedral pyrite. Previous authors (Bortnikov et al 1993 ; Cook 1996 ) described similar textures and attributed them to decomposition due to changing As/Sb activities in the hydrothermal fluid, although the occurrence of these textures locally associated with fractured pyrite grains at the ABM deposit suggests the possibility of metamorphic origin (Miller and Craig 1983 ; Brueckner et al 2016 ).
Fig.
…”
Section: Observations and Resultsmentioning
confidence: 79%
“…This fact may have special significance in connection with the genetic relationships between rubané and massive ore. In fact, because both Ag and Sb sulfosalts are associated with late fluids compared to As sulfosalts (e.g., Bortnikov et al 1993), it is possible that Ag-rich tetrahedrite from the massive ores was deposited by late fluids, probably characterized by lower temperatures compared to fluids forming tennantite in rubané ore. Such a hypothesis, in addition to evidence that stockwork ores of the IPB deposits are usually depleted in Sb and Ag compared to those lying above massive ore (Marcoux et al 1996), suggests a similarity between rubané and stockwork ore.…”
Section: Tetrahedrite-tennantitementioning
confidence: 99%
“…Образование мирмекитоподобных структур срастаний халькопирита, арсенопирита и сфалерита при замещении тетраэдрита или теннантита или срастаний пирротина и гудмундита при замещении тетраэдрита описывалось неоднократно (Бортников и др., 1975;Генкин, 1958;Ramdohr, 1980;Basu et al, 1984;Bortnikov et al, 1993). Было показано, что разложение блеклых руд обусловлено изменением химизма (Basu et al, 1984;Bortnikov et al, 1993), а не восстановлением трехвалентных полуметаллов мышьяка и сурьмы до As -1 в арсенопирите или до Sb -1 в гудмундите (Генкин, 1958).…”
unclassified
“…Одним из текстурно-структурных свидетельств этого процесса является кристаллизация новообразованных идиоморфных зерен. Возможно, что этот механизм привел к образованию "эвтектоидных" агрегатов арсенопирита, халькопирита и сфалерита, или гудмундита и пирротина, замещающих блеклые руды, в которых арсенопирит и гудмундит обладают идиоморфизмом (Бортников и др., 1975;Basu et al, 1984;Bortnikov et al, 1993). В участках же интенсивного замещения Zn-тетраэдрита в месторождении Дарасун наблюдаются тонкозернистые неоднородные осцилляторно-зональные агрегаты, скорее отложившиеся из перенасыщенных поровых флюидов, изменивших свой химизм при растворении ранее отложившегося минерала.…”
unclassified