The Nephelinite of Etinde, Cameroons, West Africa
- 1 June 1953
- journal article
- research article
- Published by Cambridge University Press (CUP) in Geological Magazine
- Vol. 90 (3) , 145-151
- https://doi.org/10.1017/s0016756800064128
Abstract
Re-examination of the nephelinites of Etinde, Cameroons, carrying a composite structured “nepheline” mineral shows that the feldspathoid is a genuine nepheline, in part exhibiting twinned intergrowths, and not a potassic orthorhombic feldspathoid phase. Analysis indicates a composition with a mol. ratio of 3·6. Comparison is made with other nephelines in contrasted host environments.Keywords
This publication has 2 references indexed in Scilit:
- The Petrology of the Norra Kärr DistrictGeologiska Föreningen i Stockholm Förhandlingar, 1944
- The sodium-potassium nephelitesAmerican Journal of Science, 1917