Wisconsin Geological & Natural History Survey » Quartz
FOND DU LAC COUNTY: Quartz-rich St. Peter sandstone is quarried on a large scale by the Badger Mining Corp. at the Fairwater Quarry (SW NE Sec. 36 T15N R13E) SW of Ripon (UW Oshkosh, 1994). FOREST COUNTY: Quartz is the major constituent of the quartzite of McCaslin Mountain where it also occurs as large crystals and clusters locally in veins.
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