Lost Dutchman Quarry Feldspar Mine Near Westcreek,
Subsurface depth reaches a maximum of 3 meters (10 feet). The ore mined is composed of microcline with waste material consisting primarily of thorite, allanite and biotite. The ore body extends 60 meters (200 feet) long and 15 meters (50 feet) wide. Associated rock in this area is pegmatite from the Neoproterozoic era to billion years