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Coolen, J. J. M. M. M.
- Hogbomite from Fe-Ti Deposits of Madangere, Ankola Taluk, Karnataka
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Authors
Affiliations
1 Department of Geology, Karnataka University, Dharwar 580003, IN
2 Institute of Earth Sciences, Free University, De Boelelaan, Amsterdam, NL
1 Department of Geology, Karnataka University, Dharwar 580003, IN
2 Institute of Earth Sciences, Free University, De Boelelaan, Amsterdam, NL
Source
Journal of Geological Society of India (Online archive from Vol 1 to Vol 78), Vol 22, No 9 (1981), Pagination: 439-443Abstract
Hogbomite analysing 59.94% Al2O3, 6.01% TiO2, 0.21% V2O3, 21.02%, FeO, 0.14%, MnO, 9.66%, MgO and 1.06% ZnO occurs as a widely distributed mineral phase in the vanadiferrous Fe-Ti ore deposits of Madangere area. It occurs in well developed prismatic crystals, and small scales/rods/patches enclosed in magnetite ore grains, and locally as rims to spinel. While the coarse prisms of hogbomite bear characters of primary mineral phase, the small scales/rods/patches appear to represent exsolved phase and that forming rims to spinel is derived by the alteration of spinel. The mineral is reported for the first time from India.- Sheridanite from the V-Ti-Fe Deposits of Madangere, North Kanara District, Karnataka
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Authors
Affiliations
1 Department of Studies in Geology, Karnatak University, Dharwad 580003, IN
2 Instituut Voor Aardwetenshappen, Vrije Universiteit, 1007 MC Amsterdam, NL
1 Department of Studies in Geology, Karnatak University, Dharwad 580003, IN
2 Instituut Voor Aardwetenshappen, Vrije Universiteit, 1007 MC Amsterdam, NL
Source
Journal of Geological Society of India (Online archive from Vol 1 to Vol 78), Vol 24, No 5 (1983), Pagination: 262-265Abstract
Sheridanite with the formula (Mg7.97 AI2.64 Fe"1.38 Ti0.01 Mn0.01) [(Si5.3 Al2.7) O20)] (OH)16 occurs as one of the main gangue minerals in the V-Ti-Fe deposits of Madangere. It is found chiefly as late stage pyrogenic mineral and to a very limited extent as secondary mineral after hogbomite.- Mineral Chemistry and P-T Conditions of Formation of A Basic Scapolite-Garnet-Pyroxene Granulite from Doddakanya, Mysore District
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Authors
Affiliations
1 Department of Studies in Geology, Karnatak University, Dharwad 580003, IN
2 Instituut voor Aardwerenschappen, Vrije Universiteit, Postbus 7161,1007 MC Amsterdam, NL
1 Department of Studies in Geology, Karnatak University, Dharwad 580003, IN
2 Instituut voor Aardwerenschappen, Vrije Universiteit, Postbus 7161,1007 MC Amsterdam, NL