Brownlee Dam Area

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Washington County, Idaho, USA

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Key Information

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  • The Brownlee Dam Area is in Washington County, Idaho, along the Snake River near the Idaho-Oregon border, part of Hells Canyon, known for its depth.

  • Research suggests minerals like pyrite, sphalerite, and galena are found here, with silver mineralization being notable.

  • It seems likely that the area has volcanic rocks from pre-Tertiary age, with complex fracturing where minerals form.

  • Historical mining for copper and silver occurred, with past production at sites like the I. X. L. Mine, but current activity is unclear.

  • The area is known for the Brownlee Dam, supporting recreation like boating and fishing, with local culture tied to the river.

  • The climate is semi-arid with cold winters and warm summers, and the ecology includes the reservoir supporting fish, with terrestrial vegetation like sagebrush.

Direct Answer

The Brownlee Dam Area in Washington County, Idaho, is a fascinating spot for mineral crystal enthusiasts, located along the Snake River near the Idaho-Oregon border, within the dramatic Hells Canyon. This area is known for its depth and scenic beauty, making it a unique destination.

Geographic Location
It sits in the western United States, part of Hells Canyon, with nearby notable areas like the Seven Devils Mountains, offering a rich landscape for exploration. Nearby towns include Weiser, Idaho, and Halfway, Oregon, adding to its accessibility.

Minerals Produced
Research suggests the area hosts a variety of minerals, including pyrite (iron sulfide), sphalerite (zinc ore), and galena (lead ore), with silver mineralization being particularly significant. Uncommon minerals like stannite (copper-tin ore) and boulangerite (lead-antimony ore) add an unexpected twist, appealing to collectors seeking unique specimens.

Geological Structure
The evidence leans toward the area being characterized by pre-Tertiary volcanic rocks, with complex fracturing where these minerals form, offering insights into ancient volcanic activity and its mineral wealth.

Mining History
Historical records indicate mining for copper and silver, with past production at sites like the I. X. L. Mine and the Edna May Prospect. It seems likely that mining dates back to the late 19th or early 20th century, though current activity is less clear, adding a layer of historical intrigue.

Local Culture and Characteristics
The Brownlee Dam, part of the Hells Canyon Project, is a cultural landmark, supporting hydroelectric power and recreation like boating and fishing on the 58-mile-long Brownlee Reservoir. Local communities likely have stories tied to the dam's construction and the river's role in their lives, enhancing the area's charm.

Climate and Ecology
The climate is semi-arid, with cold winters and warm summers, typical of the region. The ecology is dominated by the reservoir, supporting fish and aquatic life, with terrestrial areas featuring sagebrush and grasses, influenced by the volcanic geology, which might affect soil and plant life in unexpected ways.

This blend of natural beauty, mineral richness, and human history makes the Brownlee Dam Area a compelling destination for enthusiasts.

Citations