Opaque mineralogy and mafic mineral chemistry of I- and S-type granites of the Lachlan fold belt, Southeast Australia

A systematic survey of opaque mineral assemblages and mafic mineral chemistry was undertaken to clarify the relationship between the descriptive magnetite- and ilmenite-series granite classification and the petrogenetic I- and S-type granite classification. I- and S-type granites may belong to eithe...

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Veröffentlicht in:The American mineralogist 1988-04, Vol.73 (3-4), p.281-296
Hauptverfasser: Whalen, Joseph B, Chappell, Bruce W
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description A systematic survey of opaque mineral assemblages and mafic mineral chemistry was undertaken to clarify the relationship between the descriptive magnetite- and ilmenite-series granite classification and the petrogenetic I- and S-type granite classification. I- and S-type granites may belong to either the magnetite or ilmenite series. However, the bulk of I-type granites are magnetite series, and the bulk of S-type granites are ilmenite series. The fO2 in a granitic magma may be more important than the nature of the granitic source rocks in controlling the type of associated mineral deposits.
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I- and S-type granites may belong to either the magnetite or ilmenite series. However, the bulk of I-type granites are magnetite series, and the bulk of S-type granites are ilmenite series. The fO2 in a granitic magma may be more important than the nature of the granitic source rocks in controlling the type of associated mineral deposits.</description><identifier>ISSN: 0003-004X</identifier><identifier>EISSN: 1945-3027</identifier><language>eng</language><publisher>Mineralogical Society of America</publisher><subject>Australasia ; Australia ; chemical composition ; electron probe ; genesis ; geochemistry ; granites ; granitic composition ; igneous and metamorphic rocks ; igneous rocks ; interpretation ; Lachlan fold belt ; mafic composition ; mineral composition ; New South Wales Australia ; opaque minerals ; petrography ; petrology ; plutonic rocks ; southeastern Australia ; textures</subject><ispartof>The American mineralogist, 1988-04, Vol.73 (3-4), p.281-296</ispartof><rights>GeoRef, Copyright 2020, American Geosciences Institute. 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I- and S-type granites may belong to either the magnetite or ilmenite series. However, the bulk of I-type granites are magnetite series, and the bulk of S-type granites are ilmenite series. 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I- and S-type granites may belong to either the magnetite or ilmenite series. However, the bulk of I-type granites are magnetite series, and the bulk of S-type granites are ilmenite series. The fO2 in a granitic magma may be more important than the nature of the granitic source rocks in controlling the type of associated mineral deposits.</abstract><pub>Mineralogical Society of America</pub><tpages>16</tpages></addata></record>
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subjects Australasia
Australia
chemical composition
electron probe
genesis
geochemistry
granites
granitic composition
igneous and metamorphic rocks
igneous rocks
interpretation
Lachlan fold belt
mafic composition
mineral composition
New South Wales Australia
opaque minerals
petrography
petrology
plutonic rocks
southeastern Australia
textures
title Opaque mineralogy and mafic mineral chemistry of I- and S-type granites of the Lachlan fold belt, Southeast Australia
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