WSU Sample 20

sketchfab

No info on where this sample was collected. In hand sample, this rock appears to be primarily plagioclase and quartz, with quartz composing less than 20 percent of the sample. The mafic minerals appear to be predominantly biotite, but hornblende is also present. While some of the sample appears to be creamy colored K-spar, again, that is not obvious in actual hand sample, and may be caused by lighting during imaging.