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Intrusion sequences within ore‐bearing granitoid plutons
Author(s) -
Štemprok Miroslav
Publication year - 1990
Publication title -
geological journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.721
H-Index - 54
eISSN - 1099-1034
pISSN - 0072-1050
DOI - 10.1002/gj.3350250323
Subject(s) - pluton , geology , biotite , geochemistry , intrusion , mantle (geology) , bearing (navigation) , petrology , seismology , paleontology , geography , cartography , quartz , tectonics
A new database of some 200 granitic bodies throughout the world associated with Sn, W and Mo deposits is analysed with respect to size and petrological characteristics. Most Sn, W and Mo deposits relate to small stocks not exceeding 25 km 2 . Biotite granites are the most common type of ore‐bearing plutons, while two mica granites are subordinate. There seems to be an upward grading in grain size such that the later, higher members of a suite are the finest grained. Ore‐bearing processes relate to deep evolving differentiation of specialized magmas modified by mantle fluids.