BETA

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  1. Weymouth

    ... include tartan ( microcline ), Carlsbad , and albite patterns. Grain boundaries range from smooth curving to substantially ... twinning patterns include tartan (microcline), Carlsbad, and albite patterns. Grain boundaries range from smooth curving to substantially ...

    Ed FitzGerald - 2015-09-05

  2. Olympian White

    ... accessory minerals are quartz and feldspar ( albite twinning ) that occur as individual crystals and small aggregates. ... non-carbonate accessory minerals are quartz and feldspar (albite twinning) that occur as individual crystals and in small aggregates. ...

    Ed FitzGerald - 2015-09-05

  3. Crystal Stratus

    ... minerals minimally include quartz , feldspar s ( albite twinning ), mica s ( phlogopite , muscovite ?), amphibole s, ... Accessory minerals minimally include quartz, feldspars (albite twinning), micas (phlogopite, muscovite?), sillimanite, vesuvianite?, ...

    Ed FitzGerald - 2015-09-05

  4. Appalacian Green

    ... minerals minimally include quartz , feldspar ( albite twinning ) amphibole s (richterite, tremolite?), mica s ( ... non-carbonate accessory minerals are of quartz and feldspar (albite twinning) that occur as individual crystals and rarely in small ...

    Ed FitzGerald - 2015-09-05

  5. Danby Gray

    ... were only definitively identified in a few instances where albite twinning was observable. These always occurred in clusters with mica ... were only definitively identified in a few instances where albite twinning was observable. These always occurred in clusters with mica ...

    Ed FitzGerald - 2015-09-05

  6. Eureka

    ... were only definitively identified in a few instances where albite or Carlsbad twinning was observable. Rare aggregates of mica , ...

    Ed FitzGerald - 2015-09-05

  7. Heathermoor

    ... with a maximum dimension of .25 mm, most are smaller. Albite twinning is visible in a few feldspar grains. Various species of ...

    Raven Mueller - 2015-08-12

  8. Dakota Mahogany Sunset

    ... including tartan ( microcline ), Carlsbad , and albite . Grain boundaries range from smooth curving to substantially ...

    Raven Mueller - 2015-08-12

  9. Montclair

    ... accessory minerals minimally include quartz, feldspar ( albite twinning ), mica s ( muscovite , phlogopite and others?), ...

    Ed FitzGerald - 2015-09-05

  10. Elberton Granite

    ... includes Carlsbad , tartan ( microcline ), and albite . Grain boundaries range from smooth curving to substantially ...

    Ed FitzGerald - 2015-09-04

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