. Appendix to the Journals of the Senate and Assembly of the ... session of the Legislature of the State of California. Copper Croppings on the property of the Horse Mountain Copper Mine, Humboldt County, California. HUMBOLDT COUNTY. 395 parts of western Trinity County difficult of access. The copper ofHumboldt County, like that of Del Norte County, is associated withserpentine. There are dikes of quartzite and diorite protrudingthrough the serpentine in many instances and also the mother rock ofserpentine, called peridotite, is encountered in a more or alteredcondition. The principal di
. Appendix to the Journals of the Senate and Assembly of the ... session of the Legislature of the State of California. Copper Croppings on the property of the Horse Mountain Copper Mine, Humboldt County, California. HUMBOLDT COUNTY. 395 parts of western Trinity County difficult of access. The copper ofHumboldt County, like that of Del Norte County, is associated withserpentine. There are dikes of quartzite and diorite protrudingthrough the serpentine in many instances and also the mother rock ofserpentine, called peridotite, is encountered in a more or alteredcondition. The principal district where copper mining is being done at thepresent time is Horse Mountain, situated in T. 5 and 6 N., R. 4 ore on the mountain seems to be of a secondary nature, consisting. Camp buildings of the Horse Mountain Copper Mining Company, on Horse Mountain,Humboldt County, California. of bunches of impregnated serpentine close to the surface, in which thevalues run high in copper glance, bornite, native copper, and malachitvThe general strike of the formation is northwest and southeast, witha dip to the northeast. The formation is mostly serpentine, porphyryand gabbro, the latter having peridotite closely associated with it, fromthe decomposition of which the serpentine is formed. Chrome iron isalso encountered in small quantities in the serpentine. There are quartz and diorite dikes protruding through these forma-tions all seeming to have a northwest and southeasterly direction anda northeast dip. Next to Horse Mountain, the district where copper development hasbeen done to a considerable extent is Red Cap Creek. Several Copper 396 MINES AND MINERAL RESOURCES. companies, namely the Red Cap, La Perin have held claims onthe ridge between Boise and Red Cap creek
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Keywords: ., bookauthorcaliforn, bookcentury1800, bookdecade1850, bookyear1853
