BETA

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  1. Weymouth

    ... minerals include biotite , pyroxene s, opaques, and muscovite . Together these minerals constitute 5 to 10 percent of slide area. ... micrographic and zoned grains. Accessory minerals include muscovite, biotite, opaques, and highly altered pryroxenes/ amphibole s. ...

    Ed FitzGerald - 2015-09-05

  2. Hawthorne Granite

    ... area. Opaques occupy about 5 percent of slide area and muscovite is present at less than 1 percent. There are slight signs of ... of slide area. Opaques occupy about 5 percent of slide area. Muscovite is present in trace amounts. There are slight signs of incipient ...

    Ed FitzGerald - 2015-09-04

  3. Bellingham

    ... , which is common at about 5 to 10 percent of slide area. Muscovite is also relatively ubiquitous occurring as very small inclusions in feldspars and as larger foliated masses. Muscovite still constitutes only 1 to 2 percent of slide area at most. Opaques ...

    Raven Mueller - 2015-09-03

  4. Imperial

    ... accessory minerals are mica s ( phlogopite , muscovite ?) and acicular minerals (sillimanite?) that occur in aggregate ... non-carbonate accessory minerals are micas (phlogopite, muscovite?) that occur in small aggregates (< 1 mm length) or as individual ...

    Ed FitzGerald - 2015-09-05

  5. Olympian White

    ... nucleation of grains. Other minerals such as mica s ( muscovite , phlogopite ?) and opaques are present only in trace amounts. ... smaller. Other minerals are relatively rare, micas (muscovite, phlogopite?) form aggregates in small bands ~.2 mm wide and ...

    Ed FitzGerald - 2015-09-05

  6. Mountain White

    ... mm; most are significantly smaller. Platy minerals, likely muscovite or phlogopite , are also common and occur individually and in ... include quartz, amphibole s (richterite?), mica s (muscovite, phlogopite and others?), sillimanite, opaques, sphene, and possibly ...

    Ed FitzGerald - 2015-09-05

  7. Dolph Pond Granite

    ... a maximum crystal size of 4.4 mm. Opaques are also common; muscovite is present in trace amounts. There are several areas containing ... common at about 5 percent of slide area apiece. Epidote and muscovite are present in trace amounts. Secondary carbonate and other ...

    Ed FitzGerald - 2015-09-04

  8. Crystal Stratus

    ... s ( albite twinning ), mica s ( phlogopite , muscovite ?), amphibole s, sillimanite, vesuvianite ?, opaques, sphene ... quartz, feldspars (albite twinning), micas (phlogopite, muscovite?), sillimanite, vesuvianite?, opaques, sphene, and possibly brucite ...

    Ed FitzGerald - 2015-09-05

  9. Eureka

    ... Rare aggregates of mica , likely phlogopite or muscovite are present, sometimes in association with quratz/feldspar. All ... are also certainly present. Mica species (phlogopite, muscovite?) are also present in these aggregates. Outside of these aggregates ...

    Ed FitzGerald - 2015-09-05

  10. Appalacian Green

    ... ) amphibole s (richterite, tremolite?), mica s ( muscovite , phlogopite and others?), sillimanite, opaques, isotropic ... smaller. Other minerals are relatively rare, micas (muscovite, phlogopite?) and acicular sillimanite form aggregates in small ...

    Ed FitzGerald - 2015-09-05

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