Our Hayfork Creek Claims are located in the Klamath Mountain Province in northwestern California, an area that is the second-most gold production provinces in California. The gold districts in this area include that of Shasta, Trinity and Siskiyou Counties. The most productive placer deposits of the Trinity River are those located along its main channel. This includes the principle tributaries of Hayfork Creek. The Trinity River District includes the Trinity River and its tributaries, (including Hayfork Creek) have been the sources of vast amounts of gold. The total estimated output is believed to be about $35 million in gold. In Hayfork Valley, most of the gold was recovered by dragline dredging and hydraulicking. A number of rich gold-quartz veins are found in slate and related rocks in the mountains, just south of Hayfork.
The major rick units of the Klamath Mountains include the Abrams Schist and Salmon Schist; the Copley Greenstone, Balaklala Rhyolite and Kennett Shale; slate of the Bragdon Formation, and the younger granitic rocks of the Shasta Bally batholith. On the western side of the provinces are extensive beds of sandstone, shale and conglomerate of Jurassic age, and ultramafic rocks that are in part serpentinized.
Work Cited: “Gold Districts of California” Edition 193. William B. Clark. 1998