STATE AGRICULTURAL SOCIETY 345 



EMERALD NICKEL. 



Monterey County^ with cbromo ore. 



FELDSPAR. 



San, Diego County, in crystals. (See Orthoclase.) 



FLUOR SPAR. 



In crj'stals and large cleavable masses, of various tints — white, pink, 

 and purple, and green, like the specimens from Derbyshire, England; in 

 the veins of galena and blende. Castle Dome District, Colorado River, 

 Arizona. Sparingly, in small white cubes, with the copper ore, at Mount 

 Diablo. 



GALENA— (^«7jj/»«-e^ of Lead.) 



This common ore of lead has not yet been found in finely crystallized 

 cabinet specimens on the Pacific coast. The localities of the massive or 

 granular ore are numerous — it being found in small quantities in many 

 of the gold bearing veins of the State, especially at the following: 31ari- 

 posa County, at Marble Springs Mine ; Princeton Mine ; Adelaide. Cala- 

 veras County, at the Barnes and Silver Elephant claims, at Murphy's ; at the 

 Star of the West, Blue Mountain District, and the Good Hunter claims, 

 with gold. In Sacramento County, at Michigan Bar, with blende and 

 pyrites. Nevada County, at Meadow Lake, with blende. Tuolumne 

 County, at the Soulsb}^ Mine, with blende and iron pyrites and gold. 

 In Nevada County, in several of the veins at Grass Valley, with free 

 gold. In Tehama County, on Cow Creek; and abundantl}^ in veins on the 

 Island of Santa Catalina. In Arizona it is abundant in the veins of the 

 Castle Dome District, twenty-five miles from Fort Yuma; and in the 

 Eureka District, on the same river, about twenty-five miles further north ; 

 also in the Piccacho District, and in the Weaver District, near La Paz; 

 at the Santa Rita Mine, with gray copper ore; in the Tajo vein, with 

 copper glance, blende, tetrahedrite, and gold; in the Santa Cruz Moun- 

 tains, south of Fort Buchanan; at the Mowry and Patagonia Mines; at 

 San Xavier, on the Santa Cruz (Pumpelly.) In Nevada it is abundant on 

 Walker's River, north of Esmeralda, and at Steamboat Springs, Galena 

 District. It is also found in portions of the Comstock lode, Washoe, 

 associated with the silver sulphurets; but where it is associated in that 

 vein with much blende and' copper pyrites, it is not rich in silver — form- 

 ing the ore commonly known there as " base metal." 



GARNET. 



El Dorado County, at Fairmount Mine, three miles from Pilot Hill, in 

 large blocks and masses two feet thick, or more. Associated with sjiccu- 

 lar iron, calc spar, iron pyrites, and copper pyrites, with actinolite in 

 steatite, near Petaluma, Sonoma County; in large semi-crystalline masses, 

 weighing ten to twenty pounds, and of a light color, from the Coso 

 mining district. (Specimens of this were brought to San Francisco 

 under the supposition that it was tin ore.) A beautiful green garnet, 



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