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  1. American Bouquet

    ... multiple species of feldspar and granophyric with plagioclase intergrown with quartz. Accessory minerals include biotite , ...

    Raven Mueller - 2015-09-03

  2. Adirondack Granite

    ... section. The rock is composed principally of quartz , plagioclase - feldspar , biotite , and garnet. Quartz and feldspar ... sampled section. The rock is composed principally of quartz, plagioclase-feldspar, biotite, garnet, opaques, and a highly altered green ...

    Ed FitzGerald - 2015-09-04

  3. Dakota Mahogany Sunset

    ... multiple species of feldspar and granophyric with plagioclase intergrown with quartz. Accessory minerals include biotite , ...

    Raven Mueller - 2015-08-12

  4. Blue Mountain Granite

    ... appearance. Observed feldspar twinning was rare but both plagioclase and potassium feldspar varieties are present. The accessory ...

    Ed FitzGerald - 2015-09-04

  5. Dakota Mahogany Whetstone

    ... multiple species of feldspar and granophyric with plagioclase intergrown with quartz. Accessory minerals include biotite , ...

    Raven Mueller - 2015-08-12

  6. Bellingham

    ... multiple species of feldspar and rare granophyric with plagioclase intergrown with quartz. Accessory minerals include biotite , ...

    Raven Mueller - 2015-09-03

  7. Hawthorne Granite

    ... multiple species of feldspar and granophyric with plagioclase intergrown with quartz. Accessory minerals include biotite , ...

    Ed FitzGerald - 2015-09-04

  8. Dakota Mahogany Brown Velvet

    ... multiple species of feldspar and granophyric with plagioclase intergrown with quartz. Accessory minerals include biotite , ...

    Raven Mueller - 2015-08-12

  9. Elberton Granite

    ... multiple species of feldspar and granophyric with plagioclase intergrown with quartz. Accessory minerals include biotite , ...

    Ed FitzGerald - 2015-09-04