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14 hits

  • Thumbnail for 44-4207 relief-scale
    44-4207 relief-scale

    These six minerals are mounted on one slide to show comparative relief.

  • Thumbnail for aragonite
    aragonite

    This thin section consists of two oriented aragonite crystals, both good for obtaining interference figures.

  • Thumbnail for Riebeckite
    Riebeckite

    A large riebeckite grain dominates this thin section.

  • Thumbnail for barite #2
    barite #2

    This thin section consists of two oriented barite crystals, both good for obtaining interference figures.

  • Thumbnail for schorlite ll to C
    schorlite ll to C

    This schorl crystal is oriented parallel to the c-axis to aid in finding interference figures

  • Thumbnail for 2V-84
    2V-84

    These two oriented andalusite crystals are aligned to show BXA and BXO interference figures.

  • Thumbnail for Calcite A-E
    Calcite A-E

    This thin section consists of two oriented calcite crystals, both good for obtaining interference figures.

  • Thumbnail for 44-4206 2V slide
    44-4206 2V slide

    Wards' samples with oriented crystals to show varying 2V angles.

  • Thumbnail for Quartz A-E
    Quartz A-E

    This thin section consists of two quartz crystals, one of which is oriented perpendicular to the optic axis and provides a perfect crystal with which to obtain an interference figure.

  • Thumbnail for schorlite perp to C (95)
    schorlite perp to C (95)

    This schorl crystal is oriented perpendicular to the c-axis to aid in finding interference figures

  • Thumbnail for 44-4205 interference figures
    44-4205 interference figures

    Ward's samples with oriented crystals to aid in finding interference figures.

  • Thumbnail for Tourmaline A-E
    Tourmaline A-E

    This thin section consists of two oriented tourmaline crystals, both good for obtaining interference figures.

  • Thumbnail for barite
    barite

    This thin section consists of two oriented barite crystals, both good for obtaining interference figures.

  • Thumbnail for quartz ll to C
    quartz ll to C

    These Ward's samples are oriented parallel to the c-axis.