Mines and Mineral Resources of Trinity County, California

Research one of Northern California’s most historic gold-producing regions with Mines and Mineral Resources of Trinity County, California. Originally published in 1965 as County Report No. 4 by the California Division of Mines and Geology, this reprinted reference documents the county’s mines, mineral deposits, geology, and gold production.

The report includes descriptions and legal-location information for hundreds of historic mining sites. A large foldout map, stored in the cover pocket, identifies approximately 300 placer locations and 200 lode mines throughout Trinity County.

Inside the Report

• History of mining in Trinity County

• Regional geology and mineral resources

• Historic gold-production information

• Descriptions of placer and lode mining properties

• Legal-location details for documented sites

• Information about approximately 300 placer locations

• Information about approximately 200 lode mines

• Bibliographical references for additional research

• Large foldout mine-location map

Key Features

• Reprint of an official California mining report

• Originally published by the California Division of Mines and Geology

• Detailed coverage of Trinity County’s mining industry

• Documents approximately 500 historic mining locations

• Includes a large foldout map in the cover pocket

• Useful for historical and geological research

• Valuable companion for prospectors studying Northern California gold country

Ideal For

• Gold prospectors and mining researchers

• Trinity County history enthusiasts

• Rockhounds and amateur geologists

• Metal detectorists researching historic mining areas

• Mining-claim researchers

• Western Americana collectors

• Libraries, educators, and historical societies

Book Specifications

• Title: Mines and Mineral Resources of Trinity County, California

• Authors: J. C. O’Brien and Quintin A. Aune

• Series: County Report No. 4

• Original Publisher: California Division of Mines and Geology

• Original Publication Year: 1965

• Format: Reprinted reference report

• Language: English

• Length: 125 pages

• Map: Large foldout mine-location map stored in the cover pocket

• Documented Locations: Approximately 300 placer sites and 200 lode mines

• Dimensions: Not specified in available product information

For anyone studying the mining history and mineral potential of Northern California, this report offers a concentrated source of historical property descriptions, geological information, production records, and map-based research for Trinity County.

Please Note: This is a reprint of a historical 1965 report. Mine locations, legal descriptions, property ownership, claim status, access conditions, roads, and regulations may have changed substantially. Use the information for historical research and always verify current land status before entering property or prospecting. Never enter abandoned mines, which may contain unstable ground, concealed shafts, toxic gases, or other deadly hazards.

Just reprinted: Mines and Mineral Resources of Trinity County, California County Report #4, California Division of Mines & Geology, 1965, 125 pages, large fold out map showing approximately 300 placer sites, 200 lode mines, plus legal description and brief history, geology and gold production, with large fold out map locating sites in cover pocket.