Mineral Point, Wisconsin his family who settled a few miles away from Mineral Point. During the following year, large quantities of galena, or lead ore, were discovered around the settlement in shallow deposits. Lead had many uses at the time, and settlers began to flock to the region hoping to make a living by extracting the easily accessible mineral. Lead deposits extended throughout an area that also included Dubuque, Iowa and Galena, Illinois, but Mineral Point became the center of lead mining operations within the bounds of present-day Wisconsin (then part of Michigan Territory). By 1829, the region's growing population led to the
Silver Valley (Idaho) Lewis and Clark line – a series of strike-slip faults running across the Pacific Northwest – crosses this anticline, generally trending in an east-west direction. Within this mining district, the major structure of the lineament is the Osburn fault, which runs directly through the district’s most successful silver belts. Its 16-mile (27 km) displacement divides the district into two distinct parts, the southern Page Galena Belt, and the northern Golconda Lucky Friday Belt. Three main minerals make up most of the ore production in the Silver Valley. Galena (PbS or lead(II) sulfide) is the most important ore mineral found in