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Chromium in rocks and minerals from the southern California batholith

Chemical Geology

By:
and
DOI: 10.1016/0009-2541(76)90022-X

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Abstract

Chromium, determined by neutron-activation analysis in a suite of rocks and minerals from the southern California batholith, shows Cr concentrated in the mafic differentiates, decreasing as the more felsic rocks are approached. This trend is evident for samples of the Woodson Mountain Granodiorite from a single differentiated stock. The distribution of Cr in the minerals from the rocks of the southern California batholith shows that Cr was depleted in the magma during the course of crystallization. The data indicate that the minerals were in equilibrium with the magma during crystallization, and the distribution coefficient (Cr in biotite/Cr in hornblende) is correlated with differentiation indices, indicating either temperature or compositional dependence. The average distribution coefficient (Cr in biotite/Cr in hornblende) is 1.18, which compares favorably with the average values found by other investigators for other suites. ?? 1976.

Additional Publication Details

Publication type:
Article
Publication Subtype:
Journal Article
Title:
Chromium in rocks and minerals from the southern California batholith
Series title:
Chemical Geology
DOI:
10.1016/0009-2541(76)90022-X
Volume
17
Issue:
C
Year Published:
1976
Language:
English
Publisher:
Elsevier
Larger Work Type:
Article
Larger Work Subtype:
Journal Article
Larger Work Title:
Chemical Geology
First page:
73
Last page:
88