Rotten_Granite_Wisconsin_Quartz Published October 16, 2020 at 1920 × 838 in Rotten_Granite_Wisconsin_Quartz ← Previous Next → Notice how this granite is just falling apart into pebbles. At this particulat quarry, the Beilke Quarry, a variety of minerals were found including Microcline, Smoky Quartz, and Phenakite. This location is private and reclaimed.