Consider Bowen's reaction series. Which mineral would you expect to see as a phenocryst in a porphyritic basalt?
A) quartz
B) olivine
C) orthoclase
D) sodium- rich plagioclase

Name: Consider Bowen's reaction series. Which mineral would you expect to see as a phenocryst in a porphyritic basalt? A) quartz B) olivine C) orthoclase D) sodium- rich plagioclase
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Question

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Olivine is an early-forming mineral in Bowen's reaction series and is commonly found as phenocrysts in porphyritic basalt.

Consider Bowen's Reaction Series