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Raunak mitra Mitra Asked a Question
January 19, 2022 3:56 pmpts 30 pts
Q37.A porphyritic igneous rock contains phenocrysts of olivine and calcium-rich plagioclase in an aphanitic groundmass. This is a O andesite porphyry Obasalt porphyry Ogabbro porphyry O rhyolite porphyry
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  • Mayank sagar Best Answer
    Gabbro is composed of pyroxene and calcium-rich plagioclase, with minor amounts of hornblende, olivine. Basalt is rich in iron and magnesium and is mainly composed of oliv...
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  • Mayank sagar thankyou
    gabbro prophyry
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    Raunak mitra Mitra
    Sir, Can you please explain this one