Chromium in rocks and minerals from the southern California batholith
Chemical Geology
By: F.O. Simon and Carl L. Rollinson
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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.
| 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 |
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