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- Good_Hope_Mine abstract "Good Hope Mine was the principal gold mine in the Pinacate Mining District, Riverside County, California.Good Hope Mine was reputedly begun by a Frenchman named Mache, although the washes in the area were it was originally placer mined by Mexicans in the 1850s during the California Gold Rush using arrastras. The Good Hope quartz vein was found in 1874. Americans later bought the mine and worked it.The mine was worked to a depth of 575 feet, with several levels 100 feet apart below the 250 foot level. The first levels, at 250 and 350 feet, extended nearly 1,000 feet in length. The 450 foot level did not extend as far.The formation in which the ore occurred is a fine, even-grained granodiorite. At the surface were several veins at distances varying from three to twenty feet. At greater depth, these branching fissures united to form an irregular vein, with a tendency to send off shoots into the surrounding rock, chiefly into the foot-wall side.The foot-wall streak often contained high grade ore. The auriferous iron sulfide was finely disseminated through the quartz.In 1881 with the arrival of the California Southern Railroad nearby at Pinacate a five-stamp mill was constructed to crush the ore from the mine and developed the underground quartz deposit. In the 1890s an eastern corporation, the Good Hope Mining Company, took control and brought in a twenty stamp mill which was powered by coal from nearby Terra Cotta, California.Ore from the Good Hope was one requiring fine crushing and very careful amalgamation and concentration. After the installation of the twenty stamp mill, water supplies were insufficient for efficient operation of the mill. The four concentrating machines were in operation, with very poor separation of sulfides. Under such conditions, it would have been better to run a ten stamp mill, which would have allowed greater extraction and increased net profits. As a result of the diminished efficiency, the tailings carried sufficient value to make them profitable to cyanide operators who subsequently worked them. Had there been less desire to maximize the volume of ore running through the mill and greater attention to efficiency, there would have remained little profit for the cyanide man.The mine produced about $2 million in gold before 1896. The mine operated steadily until about 1903. An attempt was made in the 1930s by metallurgist James M. Hyde to reopen the mine. This effort was largely unsuccessful; the Good Hope Mine closed when it was flooded with underground water.The mine site is located between Lake Elsinore and Perris just west of Highway 74 between Richard and Eugene Streets. The mine workers settled in the area which took the name of the mine and is now a populated place to the north called Good Hope.".
- Good_Hope_Mine thumbnail Good_Hope_Mine,_between_Perris_and_Lake_Elsinore,_Riverside_County,_California.jpg?width=300.
- Good_Hope_Mine wikiPageExternalLink PRA1-PA384,M1.
- Good_Hope_Mine wikiPageExternalLink place.php?county=Riverside&feature=Good+Hope+Mine.
- Good_Hope_Mine wikiPageExternalLink page1.
- Good_Hope_Mine wikiPageID "21333089".
- Good_Hope_Mine wikiPageLength "5442".
- Good_Hope_Mine wikiPageOutDegree "22".
- Good_Hope_Mine wikiPageRevisionID "630897831".
- Good_Hope_Mine wikiPageWikiLink Arrastra.
- Good_Hope_Mine wikiPageWikiLink California_Gold_Rush.
- Good_Hope_Mine wikiPageWikiLink California_Southern_Railroad.
- Good_Hope_Mine wikiPageWikiLink Category:Former_mines_in_the_United_States.
- Good_Hope_Mine wikiPageWikiLink Category:History_of_Riverside_County,_California.
- Good_Hope_Mine wikiPageWikiLink Category:Mining_in_Riverside_County,_California.
- Good_Hope_Mine wikiPageWikiLink Coal.
- Good_Hope_Mine wikiPageWikiLink Fault_(geology).
- Good_Hope_Mine wikiPageWikiLink Gold_cyanidation.
- Good_Hope_Mine wikiPageWikiLink Gold_mining.
- Good_Hope_Mine wikiPageWikiLink Good_Hope,_California.
- Good_Hope_Mine wikiPageWikiLink Granodiorite.
- Good_Hope_Mine wikiPageWikiLink James_M._Hyde.
- Good_Hope_Mine wikiPageWikiLink Lake_Elsinore,_California.
- Good_Hope_Mine wikiPageWikiLink Perris.
- Good_Hope_Mine wikiPageWikiLink Perris,_California.
- Good_Hope_Mine wikiPageWikiLink Pinacate,_California.
- Good_Hope_Mine wikiPageWikiLink Pinacate_Mining_District.
- Good_Hope_Mine wikiPageWikiLink Placer_mine.
- Good_Hope_Mine wikiPageWikiLink Placer_mining.
- Good_Hope_Mine wikiPageWikiLink Quartz.
- Good_Hope_Mine wikiPageWikiLink Riverside_County,_California.
- Good_Hope_Mine wikiPageWikiLink Terra_Cotta,_California.
- Good_Hope_Mine wikiPageWikiLink File:Good_Hope_Mine,_between_Perris_and_Lake_Elsinore,_Riverside_County,_California.jpg.
- Good_Hope_Mine wikiPageWikiLinkText "Good Hope Mine".
- Good_Hope_Mine hasPhotoCollection Good_Hope_Mine.
- Good_Hope_Mine wikiPageUsesTemplate Template:About.
- Good_Hope_Mine wikiPageUsesTemplate Template:Coord.
- Good_Hope_Mine wikiPageUsesTemplate Template:Reflist.
- Good_Hope_Mine subject Category:Former_mines_in_the_United_States.
- Good_Hope_Mine subject Category:History_of_Riverside_County,_California.
- Good_Hope_Mine subject Category:Mining_in_Riverside_County,_California.
- Good_Hope_Mine hypernym Mine.
- Good_Hope_Mine point "33.7382 -117.2862".
- Good_Hope_Mine type Article.
- Good_Hope_Mine type Mine.
- Good_Hope_Mine type Weapon.
- Good_Hope_Mine type Article.
- Good_Hope_Mine type History.
- Good_Hope_Mine type Mine.
- Good_Hope_Mine type SpatialThing.
- Good_Hope_Mine comment "Good Hope Mine was the principal gold mine in the Pinacate Mining District, Riverside County, California.Good Hope Mine was reputedly begun by a Frenchman named Mache, although the washes in the area were it was originally placer mined by Mexicans in the 1850s during the California Gold Rush using arrastras. The Good Hope quartz vein was found in 1874.".
- Good_Hope_Mine label "Good Hope Mine".
- Good_Hope_Mine sameAs m.05f6154.
- Good_Hope_Mine sameAs 5353016.
- Good_Hope_Mine sameAs Q5582673.
- Good_Hope_Mine sameAs Q5582673.
- Good_Hope_Mine lat "33.7382".
- Good_Hope_Mine long "-117.2862".
- Good_Hope_Mine wasDerivedFrom Good_Hope_Mine?oldid=630897831.
- Good_Hope_Mine depiction Good_Hope_Mine,_between_Perris_and_Lake_Elsinore,_Riverside_County,_California.jpg.
- Good_Hope_Mine isPrimaryTopicOf Good_Hope_Mine.