BETA

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  1. Weymouth

    ... nucleation. Feldspar twinning patterns include tartan ( microcline ), Carlsbad , and albite patterns. Grain boundaries range ... nucleation. Feldspar twinning patterns include tartan (microcline), Carlsbad, and albite patterns. Grain boundaries range from smooth ...

    Ed FitzGerald - 2015-09-05

  2. Hawthorne Granite

    ... twinning is common and is predominantly tartan ( microcline ) with a minimal amount of polysynthetic. Grain boundaries are ...

    Ed FitzGerald - 2015-09-04

  3. American Bouquet

    ... Feldspar twinning patterns include both tartan ( microcline ) and Carlsbad . Feldspar grain boundaries range from smooth ...

    Raven Mueller - 2015-09-03

  4. Greene County

    ... twinning patterns including albite , tartan ( microcline ), and Carlsbad . In one case a pegmatic crystal displays a ...

    Raven Mueller - 2015-08-12

  5. Dakota Mahogany Sunset

    ... of feldspar twinning patterns including tartan ( microcline ), Carlsbad , and albite . Grain boundaries range from smooth ...

    Raven Mueller - 2015-08-12

  6. Elberton Granite

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

    Ed FitzGerald - 2015-09-04

  7. Dakota Mahogany Whetstone

    ... of feldspar twinning patterns including tartan ( microcline ), Carlsbad , and albite . Grain boundaries range from smooth ...

    Raven Mueller - 2015-08-12

  8. Bellingham

    ... for quartz. Feldspar twinning patterns include tartan ( microcline ) and albite . Grain boundaries are mostly consertal ...

    Raven Mueller - 2015-09-03

  9. Dakota Mahogany Brown Velvet

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

    Raven Mueller - 2015-08-12

  10. Mount Airy

    ... twinning includes abundant albite and tartan ( microcline ) patterns with lesser amounts of simple Carlsbad . Grain ...

    Raven Mueller - 2015-08-12