Locality type: | Occurrence |
Classification |
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Type: | Gneiss |
Confirmation |
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Validity: | Believed Valid |
Data |
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Mineral Data: | Click here to view Gneiss data |
Locality Data: | Click here to view Osumilite occurrence, Tranomaro, Amboasary Sud District, Anosy, Madagascar |
Data Identifiers |
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Mindat Occurrence Record ID: | 1297223 |
Long-form Identifier: | 1:3:1297223:2 |
GUID (UUID V4): | 450c1126-0d37-4aa2-b7de-30520c34d24c |
Nearest other occurrences of Gneiss |
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3.7km (2.3 miles) | ⓘAmbindandrakemba, Tranomaro, Amboasary Sud District, Anosy, Madagascar |
4.2km (2.6 miles) | ⓘAmbindandrakemba Mine, Ambindandrakemba, Tranomaro, Amboasary Sud District, Anosy, Madagascar |
12.3km (7.6 miles) | ⓘAmboanemba thorianite deposit, Tranomaro, Amboasary Sud District, Anosy, Madagascar |
14.8km (9.2 miles) | ⓘKotovelo thorianite deposit, Tranomaro, Amboasary Sud District, Anosy, Madagascar |
17.7km (11.0 miles) | ⓘOsumilite occurrence 2, Mahaly, Amboasary Sud District, Anosy, Madagascar |
19.1km (11.9 miles) | ⓘOsumilite occurrence 1, Mahaly, Amboasary Sud District, Anosy, Madagascar |
44.4km (27.6 miles) | ⓘOsumilite occurrence, Behara, Amboasary Sud District, Anosy, Madagascar |
75.8km (47.1 miles) | ⓘOsumilite occurrence 2, Mandromodromotra, Taolagnaro District, Anosy, Madagascar |
77.1km (47.9 miles) | ⓘOsumilite occurrence 1, Mandromodromotra, Taolagnaro District, Anosy, Madagascar |
99.3km (61.7 miles) | ⓘLiolambo phlogopite deposit, Belindo Mahasoa, Bekily District, Androy, Madagascar |
References |
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Reference Search (possible matching items) |
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| | Journal (article/letter/editorial) | S.S.K. Babu ? D.J. Waters Phase relations of osumilite and dehydration melting in pelitic rocks: a simple...1996 Abstract Thermodynamic modelling of (1) osumilite solid solutions and (2) dehydration melting in...the calculated partition of Fe and Mg between osumilite, garnet, cordierite, orthopyroxene and biotite...conditions which accompanied metamorphism of natural osumilite occurrences in Nain, Namaqualand, and Rogaland...temperature and bulk composition. Introduction Osumilite with a chemical formula (K, Na) (Mg, Fe21)2 (Al | | | Journal (article/letter/editorial) | Editor: T. Tsunogae Keywords: UHT metamorphism Osumilite Supercontinent Columbia Siberian Craton Angara-Kan...r a c t We report here for the first time the occurrence of sapphirine-bearing rocks within the Paleoproterozoic...mesoperthitic feldspar and pseudomorphoses after osumilite crystals. The peak temperature of metamorphism...metamorphic conditions. Sapphirine grains occur in the gneiss with relatively low Mg bulk composition. It is...of a melt. The metamorphic zircons from the UHT gneiss record a broad range of temperatures between 1000 | | | Journal (article/letter/editorial) | se + orthopyroxene/plagioclase + clinopyroxene/gneiss 2. Metabasite/plagioclase + orthopyroxene + cl...clase + clinopyroxene/gneiss 3. Metabasite/plagioclase + orthopyroxene/gneiss The first zone corresponds...third type, developed essentially at the expense of gneiss and the Z1/Z2 boundary is likely to correspond...to the original contact between metabasite and gneiss. When the anorthite content of plagioclase and...[Fe/(Fe + Mg)], 0.51-0.52 for orthopyroxene) and gneiss (An22_26; Fe no., 0.58-0.59), the solid solution |
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