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  1. Alcove Bluestone

    Stone Type (Commercial):  Quartz-based Availability:  Available Stone Type ... is no appreciable void space. Of the detrital grains, quartz comprises about over 95 percent, but a majority of this is in ... forms indicative of plutonic, metamorphic, or even arenite rock fragments. Rare feldspar , opaque, and other mafic mineral ...

    Intern - 2015-09-05

  2. Portland Brownstone

    Stone Type (Commercial):  Quartz-based Description:  On our wish list for a sample. ... The Portland Brownstone is a coarse sandstone (feldspathic arenite), with feldspar content as high as 65%. Quartz and mica comprise most ...

    Matt Pailes - 2015-08-24