geodil.jpg

A Geoscience Digital Image Library

1699.jpg
TitleSilver plume aplite
DescriptionThis is a plain-polarized view of aplite, which is a fine-grained pink granitic rock composed of quartz, glassy feldspar (microcline and sodic plagioclase) and biotite. The quartz and glassy feldspar is in the white areas.
ChronostratigraphyPrecambrian
Geologic provinceSilver Plume aplite
LocationUSA ▹ Colorado ▹ Boulder. Near Boulder.
PhotographerDarla Sondrol. 2001-10-25.
CollectionWard’s Collection of Classic North American Rocks #5.
Key wordsaplite, granite, Colorado
Tech details1.66 MB. Thin section. Nikon FDX-35.
GeoDIL number1699