| Reference Type | Journal (article/letter/editorial) |
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| Title | Petrochemistry and Geochronology of Pink Granite from Songsak, East Garo Hills, Meghalaya |
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| Journal | Journal Geological Society of India |
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| Authors | Kumar, Sunil | Author |
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| Year | 1990 (January 1) | Volume | 35 |
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| Page(s) | 39-45 | Issue | 1 |
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| Publisher | Geological Society of India | Place | Bangaluru, India |
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| URL | |
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| DOI | doi:10.17491/jgsi/1990/350108Search in ResearchGate |
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| Generate Citation Formats |
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| Classification | Not set | LoC | Not set |
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| Mindat Ref. ID | 18047731 | Long-form Identifier | mindat:1:5:18047731:3 |
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| GUID | 0 |
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| Full Reference | Kumar, Sunil (1990) Petrochemistry and Geochronology of Pink Granite from Songsak, East Garo Hills, Meghalaya. Journal Geological Society of India, 35 (1). 39-45 doi:10.17491/jgsi/1990/350108 |
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| Plain Text | Kumar, Sunil (1990) Petrochemistry and Geochronology of Pink Granite from Songsak, East Garo Hills, Meghalaya. Journal Geological Society of India, 35 (1). 39-45 doi:10.17491/jgsi/1990/350108 |
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| In | (1990, January) Journal of the Geological Society of India Vol. 35 (1). Geological Society of India |
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| Abstract/Notes | Abstract
The pink granite of Songsak area, East Garo Hills district, Meghalaya, intrusive into Precambrian gneisses is inferred to be S-type, peraluminous, low calcium, postkinematic granite. It is characterised by initial 87Sr/86Sr ratio of 0.728±.002, high K20, high differentiation index and presence of normative corundum. The major mineral constituents are perthitic microcline, fresh interstitial microcline, orthoclase with different degree of triclinisation, two generations of quartz and biotite. Sericitization of feldspars, presence of muscovite, rare chiastolite, fluorite and uraninite are other characteristics of the pink granites. Whole rock Rb-Sr dating assigns an age of 500±40 m.y, |
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