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Distribution of manganese between coexisting biotite and hornblende in plutonic rocks

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Distribution of manganese between coexisting biotite and hornblende in plutonic rocks; 1968; Article; Journal; Geochimica et Cosmochimica Acta; Greenland, L. P.; Gottfried, D.; Tilling, R. I.

Summary

The distribution of manganese between coexisting biotite and hornblende for 80 mineral pairs from igneous rocks of diverse provenance (including Southern California, Sierra Nevada, Boulder, and Boulder Creek batholiths and the Jemez Mountains volcanics) has been determined by neutron activation analysis. Data on the distribution ratio (Kd = Mnhornblende Mnbiotite) indicate that an equilibrium distribution of Mn is closely approached, though not completely attained, in most samples from plutonic environments. Comparison of Kd values of mineral pairs with bulk chemical composition of host rocks reveals no correlation. Because initial crystallization temperatures vary with rock composition, the lack of correlation of composition with [...]

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Type Scheme Key
local-index unknown 70009854
local-pk unknown 70009854
series unknown Geochimica et Cosmochimica Acta

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journalGeochimica et Cosmochimica Acta
parts
typevolume
value32
typeissue
value11
languageEnglish
citationTypeArticle

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