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Bernard E. Leake
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Bernard E. Leake

British mineralogist
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  • Figure 2: Illustration of pyroxene single-chain silicon-oxygen tetrahedral structure (SiO3)n and amphibole double-chain structure (Si4O11)n.
    amphibole
    / General considerations

    …according to the British mineralogist Bernard E. Leake. Because of the wide range of chemical substitutions permissible in the crystal structure, amphiboles can crystallize in igneous and metamorphic rocks with a wide range of bulk chemistries. Typically amphiboles form as long prismatic crystals, radiating sprays, and asbestiform (fibrous) aggregates; however,…

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    …according to the British mineralogist Bernard E. Leake. Because of the wide range of chemical substitutions permissible in the crystal structure, amphiboles can crystallize in igneous and metamorphic rocks with a wide range of bulk chemistries. Typically amphiboles form as long prismatic crystals, radiating sprays, and asbestiform (fibrous) aggregates; however,…

    Read More