BETA

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  1. Weymouth

    ... and albite patterns. Many feldspar grains have a near lath like habit. Grain boundaries range from smooth curving to substantially ...

    Ed FitzGerald - 2015-09-05

  2. Royal Danby

    ... Other accessory minerals are extremely rare. Several lath s of a likely mica (phlogopite, muscovite?) were present in a localized ...

    Raven Mueller - 2015-09-05