Origin of tourmaline and oxide minerals from the metamorphosed Rampura Agucha Zn-Pb-(Ag) deposit, Rajasthan, India

Höller, W.; Gandhi, S.M.

doi:10.1007/bf01163137

Cited by 16 publications

(6 citation statements)

References 28 publications

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“…Compositional fields of zincian spinel from (1) marbles, (2) metamorphosed massive-sulfide deposits, (3) granitic pegmatites, and (4) aluminous metasedimentary rocks (after Spry & Scott 1986a). Individual data-points pertain to zincian spinel compositions derived from this study and worldwide localities, that have appeared in the literature since Spry & Scott (1986a): metamorphosed massive-sulfide deposits from Colorado (Eckel et al 1997), metamorphosed massive-sulfide deposits in Fe-Al-rich aluminous metasedimentary and metavolcanic units (Hicks et al 1985, Appel 1986, Spry 1987b, Spry et al 1988, Froese et al 1989, Zaleski et al 1991, Parr 1992, Araujo et al 1995, Höller & Gandhi 1997, Morris et al 1997, Chattopadhyay 1999, Jain 1999, Toteff 1999, Rosenberg et al 2000, Schwartz & Melcher 2003, unaltered and hydrothermally altered Fe-Al-rich rocks (Hicks et al 1985, Spry 1987b, Schumacher & Robinson 1987, Damman 1989, Moore & Reid 1989, Spry & Petersen 1989, Schneiderman & Tracy 1991, Parr 1992, Soto & Azañón 1993, Pedrick et al 1998, Dasgupta et al 1999, Sawaki et al 2001, aluminous granulites (Sengupta et al 1991, Visser et al 1992, Ouzegane et al 1996, Carson et al 1997, Dawson et al 1997, Raith et al 1997, Osanai et al...…”

Section: Use Of Zincian Spinel Composition As a Guide In Explorationmentioning

confidence: 83%

Zincian Spinel Associated With Metamorphosed Proterozoic Base-Metal Sulfide Occurrences, Colorado: A Re-Evaluation of Gahnite Composition as a Guide in Exploration

Heimann

Spry

Teale³

2005

The Canadian Mineralogist

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Zincian spinel [(Zn,Fe,Mg)Al 2 O 4 ] is an accessory mineral in a variety of rock types, in particular, metamorphosed massivesulfide deposits, pegmatites, aluminous metasedimentary rocks, skarns, marbles, and sulfide-bearing granulites. Textural and compositional studies of zincian spinel in thirteen Proterozoic sulfide deposits metamorphosed to the amphibolite and granulite facies in Colorado, many of which are spatially associated with Mg-rich alteration zones, shed new light on the use of zincian spinel composition as a guide to sulfide ores. Zincian spinel from the Independence, Bon Ton, and Sedalia deposits and some cases from the Green Mountain, Betty, Caprock, Cinderella, and Cotopaxi deposits show compositions that correspond to zincian spinel associated with metamorphosed massive-sulfide deposits hosted by hydrothermally altered Fe-Al-rich metasedimentary and metavolcanic rock units elsewhere in the world (Gahnite 44-90 Hercynite 0-45 Spinel 0-25). However, other compositions of zincian spinel from these last five deposits and from three locations in the Wet Mountains (Marion and Amethyst prospects and an unnamed prospect) are depleted in Zn and enriched in Mg and Fe. These examples of Mg-rich zincian spinel occur in rocks in or adjacent to metamorphosed massive sulfides dominated by Mg-rich minerals such as phlogopite, anthophyllite, gedrite, tremolite, forsterite, cummingtonite, sapphirine, cordierite, enstatite, and clinohumite. The composition of zincian spinel in and surrounding metamorphosed massive-sulfide deposits is influenced by reactions involving Zn and Fe sulfides, as well as by bulk-rock composition, which in the case of many metamorphosed massive-sulfide deposits in Mg-rich alteration zones in Colorado, causes a marked enrichment in the spinel component of zincian spinel, to Gahnite 0-65 Hercynite 0-50 Spinel 25-90. Knowledge of the geological setting must be considered when using zincian spinel as a guide to metamorphosed massive-sulfide deposits.

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Section: Use Of Zincian Spinel Composition As a Guide In Explorationmentioning

confidence: 83%

Zincian Spinel Associated With Metamorphosed Proterozoic Base-Metal Sulfide Occurrences, Colorado: A Re-Evaluation of Gahnite Composition as a Guide in Exploration

Heimann

Spry

Teale³

2005

The Canadian Mineralogist

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“…The Rampura Agucha Zn-Pb-(Ag) stratiform deposit is located in supracrustal rocks of the Bhilwara belt at a contact with an Archean gneiss complex [18,61]. The Bhilwara belt is a thick pile of mainly metasedimentary rocks deposited during an intracratonic rifting of an Archean basement c. 2.0 Ga ago.…”

Section: Rampura Agucha Indiamentioning

confidence: 99%

Vanadium Mineralization in the Kola Region, Fennoscandian Shield

2018

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In the northern Fennoscandian Shield, vanadium mineralization occurs in the Paleoproterozoic Pechenga–Imandra-Varzuga (PIV) riftogenic structure. It is localized in sulfide ores hosted by sheared basic and ultrabasic metavolcanics in the Pyrrhotite Ravine and Bragino areas and was formed at the latest stages of the Lapland–Kola orogeny 1.90–1.86 Ga ago. An additional formation of vanadium minerals was derived from contact metamorphism and metasomatism produced by the Devonian Khibiny alkaline massif in the Pyrrhotite Ravine area. Vanadium forms its own rare minerals (karelianite, coulsonite, kyzylkumite, goldmanite, mukhinite, etc.), as well as occurring as an isomorphic admixture in rutile, ilmenite, crichtonite group, micas, chlorites, and other minerals. Vanadium is inferred to have originated from two sources: (1) basic and ultrabasic volcanics initially enriched in vanadium; and (2) metasomatizing fluids that circulated along shear zones. The crystallization of vanadium and vanadium-bearing minerals was accompanied by chromium and scandium mineralization. Vanadium mineralization in Paleoproterozoic formations throughout the world is briefly considered. The simultaneous development of vanadium, chromium and scandium mineralizations is a unique feature of the Kola sulfide ores. In other regions, sulfide ores contain only two of these three mineralizations produced by one ore-forming process.

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“…Эти объекты приурочены к палеопротерозойским рифтогенным поясам и размещаются в породах островодужного происхождения. Их возраст -около 1.9 млрд лет (Rouhunkoski, 1968;Peltola, 1978;Rauhamӓki et al, 1980;Gandhi et al, 1984;Deb et al, 1989;Deb, 1992;Allen et al, 1996;Höller, Gandhi, 1997;Peltonen, 2005) Примечательно, что образование всех этих объектов приходится на пик одной из крупнейших вспышек колчеданообразования в истории Земли -1890-1850 млн лет ( Дергачев и др., 2010). Считается, что вмещающие породы и руды претерпели метаморфизм амфиболитовой фации, в результате чего руды имеют преимущественно пирротиновый состав.…”

Section: обсуждение результатовunclassified

Mineral composition of Paleoproterozoic metamorphosed massive sulfide ore in the Kola Region (a case study of the Bragino Occurrence, South Pechenga)

et al. 2019

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Многочисленные проявления и месторождения колчеданных руд Кольского региона приурочены к палеопротерозойскому рифтогенному поясу Печенга-Имандра-Варзуга (2.5-1.7 млрд лет) и локализованы в вулканогенно-осадочных комплексах Южно-Печенгской (проявление Брагино) и западной части Имандра-Варзугской (месторождение Пирротиновое Ущелье, проявление Тахтарвумчорр и др.) структурных зон. Возраст образования колчеданных руд-около 1.9 млрд лет. Руды и вмещающие комплексы метаморфизованы в условиях амфиболитовой фации, что определило особенности их минерального состава. В статье рассмотрены типы руд проявления Брагино, выделены минеральные ассоциации, охарактеризованы главные минералы-пирротин, пирит, сфалерит, марказит и др.

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Origin of tourmaline and oxide minerals from the metamorphosed Rampura Agucha Zn-Pb-(Ag) deposit, Rajasthan, India

Cited by 16 publications

References 28 publications

Zincian Spinel Associated With Metamorphosed Proterozoic Base-Metal Sulfide Occurrences, Colorado: A Re-Evaluation of Gahnite Composition as a Guide in Exploration

Zincian Spinel Associated With Metamorphosed Proterozoic Base-Metal Sulfide Occurrences, Colorado: A Re-Evaluation of Gahnite Composition as a Guide in Exploration

Vanadium Mineralization in the Kola Region, Fennoscandian Shield

Mineral composition of Paleoproterozoic metamorphosed massive sulfide ore in the Kola Region (a case study of the Bragino Occurrence, South Pechenga)

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