Comments on Gigapan: BGT amphibolite

There is one rock exposed along the Billy Goat Trail which is a bit more enigmatic. It is amphibolite, a metamorphic rock very rich in the mineral amphibole (a.k.a. hornblende), which shows up as black in this picture. The white portions of the rock are plagioclase feldspar. This is a very mafic metamorphic rock, with ...

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    Print Pricing

    $11.99 to $126.99

    Size

    1.30 Gigapixels

    Added

    December 21, 2012

    Date Taken

    December 20, 2012

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    Tags

    m.a.g.i.c., geology, billy goat trail, Great falls, amphibolite, and 3 more

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