| 1. | Pyroxene and feldspar are the major minerals in basalt and gabbro.
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| 2. | The fresh matrix of sodium-rich pyroxene ( omphacite ).
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| 3. | They are constructed by dacite and smaller amounts of pyroxene andesite.
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| 4. | Most of the rhyolites are characterized by large amounts of pyroxene.
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| 5. | The volcano is constructed by dacite and pyroxene or hornblende andesite.
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| 6. | The upper mantle of Earth is composed mainly of olivine and pyroxene.
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| 7. | Accessory minerals like pyroxenes provide insight to the history of the magma.
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| 8. | The mineral assemblage is typically dominated by plagioclase plus pyroxene or hornblende.
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| 9. | The second is jadeite, a pyroxene rich in sodium and aluminum.
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| 10. | These grains are actually large crystals of pyroxene and amphibole.
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