| 1. | Labradorite can display an schiller " ) known as labradorescence.
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| 2. | Labradorite is the principal component of the igneous rock type anorthosite.
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| 3. | The uncommon anorthosite bodies are composed almost entirely of labradorite.
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| 4. | Feldspar phenocrysts typically are labradorite to andesine in composition.
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| 5. | The platform floors'are nevertheless riveted with labradorite.
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| 6. | Basalt on Lake Island is characterized by abundant to labradorite and clinopyroxene phenocrysts.
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| 7. | The upper differentiated portions include ilmenite bearing labradorite anorthosites.
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| 8. | The basalt comprises phenocrysts of clinopyroxene and labradorite.
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| 9. | Augite and labradorite are found in these dolerites.
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| 10. | Labradorite occurs in mafic igneous rocks and is the feldspar variety most common in basalt and gabbro.
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