Rowley Mine (Umpqua Copper Group)

The Rowley Mine is nestled in the Tiller-Drew area of Douglas County, Oregon, USA, at an elevation of approximately 2,999 feet. This places it in the western United States, specifically in the Pacific Northwest, known for its natural beauty and rugged landscapes. The mine is about 7 miles south of Tiller, a small, unincorporated community along the South Umpqua River, within the Umpqua National Forest. Nearby towns include Trail and Days Creek, adding to the region's rural charm. The area is characterized by hilly terrain, offering a picturesque setting for mineral enthusiasts.

The Rowley Mine is notable for its copper and zinc deposits, with minor occurrences of gold and silver, making it a potential hotspot for collectors. Specific minerals identified include Sphalerite (zinc ore), Chalcopyrite (copper ore), Pyrite (iron sulfide), Quartz, Calcite, Talc, and Muscovite. While no production has been reported, the presence of these minerals, especially the copper-rich eastern zone and zinc-rich western zone, suggests opportunities for future exploration, particularly with advancing mining technologies.

Geologically, the mine is hosted in schist and amphibolite rocks, part of the Little Butte Volcanics, which are metamorphic in nature, indicating a history of volcanic activity followed by tectonic transformation. There are two distinct zones of mineralization: the eastern zone, a wide band (50-150 feet) of hydrothermally altered schist with chalcopyrite streaks, and the western zone, a narrower band (about 12 feet) rich in pyrite, quartz, sphalerite, and chalcopyrite. These zones, formed by hydrothermal activity, offer a glimpse into the region's complex geological past, potentially dating back to the late Jurassic or Tertiary periods.

Exploration at the Rowley Mine includes about 1,500 feet of trenching and over 500 feet of underground work in three tunnels, though two are now caved. Despite this, no production has been recorded, indicating it remains an occurrence rather than a producing mine. Historical reports from 1973 suggest it could be a candidate for future production, especially with improving metal prices and exploration methods, adding an intriguing layer for those interested in mining history.

Tiller, the nearest community, is a small, rural town with roots in logging, reflecting a traditional Pacific Northwest lifestyle. In 2017, much of the town was put up for sale for $3.85 million and was purchased in 2018 by investors planning to develop it into a river resort, signaling a shift from its historical identity. This transformation highlights the evolving culture, potentially attracting new visitors while preserving its natural allure.

The climate in Douglas County, Oregon, is temperate, with mild temperatures and significant rainfall, typical of the Pacific Northwest. The mine's mountainous location ensures cooler conditions, enhancing its appeal for outdoor enthusiasts. Ecologically, the area is rich with forests of Douglas fir and hemlock, and the South Umpqua River supports diverse wildlife, including fish and aquatic species, creating a vibrant natural habitat.