| 41. | Manganese also substitutes for ( Fe, Mg ) within cummingtonite amphibole, replacing B site atoms.
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| 42. | "' Hornblendite "'is a plutonic rock consisting mainly of the amphibole hornblende.
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| 43. | Lujavrite is a rare variety of nepheline syenite having amphibole, aegirine pyroxene, nepheline and feldspar.
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| 44. | Phenocrysts include plagioclase in andesite with smaller amounts of amphibole, biotite, clinopyroxene, and orthopyroxene.
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| 45. | Biotite, sodium-rich amphiboles and pyroxenes along with iron-rich olivine are common minor minerals.
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| 46. | Typical minerals are amphibole, biotite, pyroxene, ilmenite or other iron oxides and some plagioclase feldspar.
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| 47. | The Pliocene ignimbrites contain biotite, ilmenite, magnetite, plagioclase, quartz, sanidine and sometimes amphibole.
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| 48. | Chrysotile is more flexible than amphibole types of asbestos, and can be spun and woven into fabric.
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| 49. | These sills range from in width, and have serpentine and talc rich interiors with amphibole rich margins.
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| 50. | The characteristics may suggest that one source is metasomatized mantle apatite and amphibole, followed by postsubduction rifting.
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