BETA

Deprecated function: Array and string offset access syntax with curly braces is deprecated in include_once() (line 20 of /var/www/preservation.nps.gov/html/buildingstone/includes/file.phar.inc).

Search

Search results

  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 ... The modal size is around .5 to .4 mm. The average individual quartz crystal is about .2 to .08 mm. Matrix cement is predominantly clay ...

    Intern - 2015-09-05

  2. Hawthorne Granite

    ... by mostly anhedral feldspar and a lesser amount of quartz . The crystalline structure is coarse. Maximum crystal dimension is 5.6 mm (feldspar) and minimum is .04 mm (quartz). There is a fairly continuous gradation in grain sizes without a clear ...

    Ed FitzGerald - 2015-09-04

  3. Blue Mountain Granite

    ... the sampled section. The rock is composed principally of quartz , feldspar , biotite , garnet, opaques, amphibole s, and pyroxene s. Quartz and feldspar account for about 70 percent of slide area. Grains are ...

    Ed FitzGerald - 2015-09-04

  4. Elberton Granite

    ... , with somewhat pearly cleavage facies, clear colorless quartz and the ferro-magnesium mineral, biotite. The constitute grains of ... by mostly anhedral feldspar and a lesser amount of quartz . The crystalline structure is generally coarse. Maximum crystal ...

    Ed FitzGerald - 2015-09-04

  5. Adirondack Granite

    ... the sampled section. The rock is composed principally of quartz , plagioclase - feldspar , biotite , and garnet. Quartz and feldspar account for about 85 to 75 percent of slide area. Grains ...

    Ed FitzGerald - 2015-09-04

  6. Weymouth

    ... feldspar (~60 percent) and a lesser amount of quartz (~40 percent). The crystalline structure is coarse. Maximum crystal dimension is 2.4 mm (feldspar) and minimum is <.1 mm (quartz). Modal grain size is around 1.2 to .6 mm. Quartz and feldspars have ...

    Ed FitzGerald - 2015-09-05

  7. Danby Gray

    ... lamellae in carbonates are common. Indistinguishable quartz and feldspar s are the most common non-carbonate accessory ... as both isolated grains and in small aggregates. Individual quartz grains have a maximum dimension of .35 mm, most are smaller. Aggregates ...

    Ed FitzGerald - 2015-09-05

  8. Dolph Pond Granite

    ... minimal foliation . Maximum crystal dimension is 14 mm ( quartz ). Several large phenocrysts occupy a significant portion of the slide. ... has a modal size range from about 1.4 to .4 mm. Relative quartz and feldspar contributions are difficult to estimate due to the ...

    Ed FitzGerald - 2015-09-04

  9. Wausau Red Granite

    ... by mostly anhedral phaneritic feldspar and quartz . The crystalline structure is coarse. Maximum crystal dimension is 6.4 mm (quartz). There is not a clear mode to crystal size, but most are between 1 and ...

    Intern - 2015-09-04

  10. Wisconsin Red Granite

    ... sample is a plutonic rock dominated by mostly anhedral quartz and feldspar . The crystalline structure is coarse. Maximum crystal ... in size. The other mode is the result of grain nucleation of quartz caused by tectonic stress. The modal size of these grains is around .08 ...

    Intern - 2015-09-05

Pages