Geochemical characteristics of granites associated with Proterozoic molybdenite mineralization in northern Sweden

Öhlander, Björn

doi:10.1016/0009-2541(85)90136-6

Cited by 9 publications

(1 citation statement)

References 37 publications

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“…The mineralized granites are commonly emplaced at shallow crustal level and possess peraluminous characteristics, with enrichment in volatile elements (F, Li, and B;Neiva 1984;Zhao et al 2001;Xie et al 2009;Fogliata et al 2012). Geochemical studies of granitic rocks associated with various types of mineralization have been undertaken to establish criteria for mineral prospecting (Flinter et al 1972;Tauson and Kozlov 1973;Tischendorf 1977;Drake 1981;Ohlander 1985;Lehmann 1987;Srivastava and Sinha 1997;Pirajno 2009).…”

Section: Introductionmentioning

confidence: 99%

Fluid inclusion, geochemical, Rb–Sr and Sm–Nd isotope studies on tungsten mineralized Degana and Balda granites of the Aravalli craton, NW India

et al. 2018

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Granitic plutons occurring within and to the west of the Delhi Fold Belt in the Aravalli craton, northwestern India are the result of widespread felsic magmatism during Neoproterozoic, some of which are associated with greisen and skarn tungsten deposits. In this paper, we present the result of our study on fluid inclusions, geochemistry and geochronology of two such tungsten mineralized granite plutons at Degana and Balda, and interpret the nature of ore fluid, and petrogenesis and age of these mineralized granites. Fluid inclusion study reveals coexistence of moderate and hyper-saline aqueous fluid inclusions along with aqueous-carbonic inclusions, suggesting their origin due to liquid immiscibility during fluid-rock interaction. Geochemically, the granites are peraluminous, Rb enriched, Sr and Ba depleted and highly differentiated. The Rb-Sr isotopic systematics yielded 795 ± 11 Ma for Balda granite and 827 ± 8 Ma for Degana granite. We show that major phase of widespread granitoid magmatism and mineralization during the Neoproterozoic (840-790 Ma) in NW India is coeval with breakup of the Rodinia supercontinent and infer a causal relationship between them.

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