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5 hits

  • Thumbnail for SW6
    SW6

    Large, anhedral, interlocking crystals of olivine and clinopyroxene are found in this coarse-grained rock. Olivine alteration to iddinsite is confined to fractures which pervade the rock and cross-cut both mineral phases. Perthitic pyroxene intergrowths are observed. A contact between an ore-rich, opaque zone and the peridotite is preserved in the thin section.

  • Thumbnail for SW9
    SW9

    This coarse-grained sample consists of equant, subhedral bronizite crystals with few large, anhedral plagioclase and augite crystals filling the interstices between grains.

  • Thumbnail for SW1A
    SW1A

    This coarse-grained ophitic norite contains intergrown plagioclase and orthopyroxene. Chlorite alteration of pyroxene is pervasive.

  • Thumbnail for SW10
    SW10

    This coarse-grained sample consists of large, euhedral, often twinned clinopyroxene crystals. Alteration along cracks contains minor chlorite.

  • Thumbnail for SW11
    SW11

    Large, euhedral plagioclase crystals are more abundant in this norite than the pyroxenes. Exsolution lamellae are extensive in the pyroxenes. Minor clinozoisite is found growing in the cracks between pyroxenes.