| 21. | The tuff is characterized by, recrystallized pumice with microscopic crystals and amphibole.
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| 22. | Minerals found in the rocks include amphibole, clinopyroxene, orthopyroxene and plagioclase.
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| 23. | The amphiboles in the rocks formed at depths of.
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| 24. | The bottom line is that sitting in a room with amphiboles makes me nervous.
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| 25. | Other solid deposits include halite, amphibole, cryolite, nitratine, and zeolite.
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| 26. | Common mineral associates in igneous rocks include olivine, pyroxenes, amphiboles and magnetite.
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| 27. | Magnetite and amphibole can also be found, often accumulating at the dune crests.
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| 28. | Hawthorne s early work focused on structural and crystal-chemical problems of amphiboles.
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| 29. | Amphibole with apatite is the main mineral phase in all three of the flows.
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| 30. | Several localities contain the rare amphibole riebeckite and the even more rare mineral astrophyllite.
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