Magmatic andalusite from the South Mountain batholith, Nova Scotia

Autor:	S. W. Richardson, D. B. Clarke, G. K. Muecke, C. B. McKenzie
Rok vydání:	1976
Předmět:	Nova scotia Geophysics Geochemistry and Petrology Batholith Country rock engineering Geochemistry engineering.material Mineral resource classification Geology Andalusite
Zdroj:	Contributions to Mineralogy and Petrology. 56:279-287
ISSN:	1432-0967 0010-7999
DOI:	10.1007/bf00466826
Popis:	Accessory andalusite has been found in some late-stage granitic differentiates of the South Mountain batholith. The andalusite is petrographically distinct from the andalusite of the thermal aureole, and it occurs in regions of the batholith which show little evidence of contamination by the country rocks. Analyses of biotites from andalusite-bearing and andalusite-free phases suggest that those coexisting with andalusite actually grew in equilibrium with the andalusite. It is concluded that magmatic andalusite must be confined mainly to water-saturated, peraluminous, epizonal granites, and some possible P-T paths for the crystallization of magmatic andalusite are considered.
Databáze:	OpenAIRE
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