Zr-rich pyroxenes and glauconitic minerals in the Tertiary alkali granite of Ailsa Craig
- 7 June 1983
- journal article
- Published by Geological Society of London in Scottish Journal of Geology
- Vol. 19 (2) , 219-227
- https://doi.org/10.1144/sjg19020219
Abstract
Synopsis: The petrographical setting of pyroxene and mica-group minerals in the Tertiary alkali granite of Ailsa Craig is described. Electron microprobe analyses of pyroxenes ranging from He 87 Ac 13 to He 0 Ac 100 are given and their variable contents of minor elements (Al, Ti and Zr) shown to compare closely with a similar occurrence recently described from a South Greenland nepheline-syenite. Glauconitic minerals occur in patches of interstitial crystallisation in the granite.Keywords
This publication has 5 references indexed in Scilit:
- Structures of Layer SilicatesPublished by Mineralogical Society ,2015
- Riebeckitic arfvedsonite and aenigmatite from the Ailsa Craig micrograniteScottish Journal of Geology, 1981
- Zirconium-bearing aegirines from Motzfeldt, South GreenlandContributions to Mineralogy and Petrology, 1981
- Glauconite and celadonite: two separate mineral speciesMineralogical Magazine, 1978
- Physical properties of synthetic and natural pyroxenes in the system diopside–hedenbergite–acmiteMineralogical Magazine, 1969