Irish osumilite
- 1 June 1973
- journal article
- Published by Mineralogical Society in Mineralogical Magazine
- Vol. 39 (302) , 189-192
- https://doi.org/10.1180/minmag.1973.039.302.06
Abstract
Summary: Osumilite of composition closely approaching that of the K,Mg end-member occurs as a significant constituent of tridymite-enstatite-feldspar-cordierite-hematite-magnetite buchites at the contact of the Tertiary dolerite plug of Tieveragh, Co. Antrim; it is proposed that the mineral be known as osumilite-(K,Mg). Despite laboratory demonstration of the metastability of osumilite-(K,Mg) over a wide pressure-temperature range, the unaltered character and apparently constant composition of the Tieveragh osumilites raises the possibility of an osumilite stability field within the system K2O-MgO-FeO-Al2O3-SiO2.Keywords
This publication has 4 references indexed in Scilit:
- Synthetic magnesian merrihueite, dipotassium pentamagnesium dodecasilicate: a tetrahedral magnesiosilicate framework crystal structureActa Crystallographica Section B: Structural Science, Crystal Engineering and Materials, 1972
- Quantitative Electron-probe Microanalysis of Rock-forming MineralsJournal of Petrology, 1969
- Metastability of an osumilite end member in the system K2O-MgO-Al2O3-SiO2-H2O and its possible bearing on the rarity of natural osumilitesContributions to Mineralogy and Petrology, 1967
- The Dolerite Plugs of Tieveragh and Tievebulliagh near Cushendall, Co. Antrim, with a Note on BuchiteGeological Magazine, 1940