Natural liquids and the phonolitic minimum
- 1 January 1964
- journal article
- research article
- Published by Wiley in Geological Journal
- Vol. 4 (1) , 55-60
- https://doi.org/10.1002/gj.3350040105
Abstract
The composition of the feldspar phenocrysts, and the enclosing glassy or finely crystalline ground‐masses, of three phonolites suggests that the addition of calcium or the addition of excess sodium (molecular ratio Na2O + Ka2O > Al2O3) to compositions in the feldspar field of the system NaAlSiO4‐KAlSiO4‐SiO2 will change the composition of the minimum on the nepheline‐feldspar boundary when this is projected into this system.Keywords
This publication has 2 references indexed in Scilit:
- Feldspar-liquid equilibria in pantellerites; an experimental studyAmerican Journal of Science, 1963
- A Classification of some Rhyolites, Trachytes, and Phonolites from part of Kenya Colony, with a Note on some Associated Basaltic RocksQuarterly Journal of the Geological Society, 1931