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