Holder, Robert M., Hacker, Bradley R., Horton, Forrest, Rakotondrazafy, A. F. Michel (2018) Ultrahigh-temperature osumilite gneisses in southern Madagascar record combined heat advection and high rates of radiogenic heat production in a long-lived high-Torogen. Journal of Metamorphic Geology, 36 (7) 855-880 doi:10.1111/jmg.12316

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👁 Image	Holland, T. J. B., Babu, E. V. S. S. K., Waters, D. J. (1996) Phase relations of osumilite and dehydration melting in pelitic rocks: a simple thermodynamic model for the KFMASH system. Contributions to Mineralogy and Petrology, 124 (3) 383-394 doi:10.1007/s004100050198	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
👁 Image	Sukhorukov, V.P., Turkina, O.M., Tessalina, S., Talavera, C. (2018) Sapphirine-bearing Fe-rich granulites in the SW Siberian craton (Angara-Kan block): Implications for Paleoproterozoic ultrahigh-temperature metamorphism. Gondwana Research, 57. 26-47 doi:10.1016/j.gr.2017.12.012	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
👁 Image	Vander Auwera, J. (1993) Diffusion controlled growth of pyroxene-bearing margins on amphibolite bands in the granulite facies of Rogaland (Southwestern Norway): implications for granulite formation. Contributions to Mineralogy and Petrology, 114 (2) 203-220 doi:10.1007/bf00307756	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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⇱ Gneiss from Osumilite occurrence, Behara, Amboasary Sud District, Anosy, Madagascar

Gneiss from
Osumilite occurrence, Behara, Amboasary Sud District, Anosy, Madagascar