36G SUPPLEMENT TO DESCRIPTIONS OF SPECIES. 



Contra-Costa Co. — San Antonio, chalcedony. 



Del Norte Co. — Crescent City, agate, carnelian ; Low Divide, chal- 

 copyrite, bornite, malachite ; on the coast, iridosmine, platinum, gold, 

 zircon, diamond. 



El Dorado Co. — Pilot Hill, chalcopyrite; near Georgetown, hessite, 

 from placer diggings ; Roger's Claim, Hope Valley, grossidar garnet, 

 in copper ore ; Coloma, chromite ; Spanish Dry Diggings, gold ; Gran- 

 ite Creek, roscoelite, gold ; Forest Hill, diamond ; Cosumnes mine, 

 molybdenite. 



Fresno Co. — Chowchillas, andalusite ; King's River, bornite. 



Humboldt Co. — Cryptoniorphite. 



Inyo Co. — Inyo district, galenite, cerussite, anglesite, oarite, ataca- 

 mite, calcite, grossidar garnet! Surprise Mine, tetraliedrite ; Kear- 

 sarge mine, silver ores ; Cerro Gordo, wulfenite. 



Kern Co. — Green Monster mine, cuproscheelite. 



Lake Co. — Borax Lake, borax I sassolite, glauberite; Pioneer mine, 

 cinnabar, native mercury, selenide of mercury ; near tlie Geysers, 

 sulphur, hyalite ; Redington mine, metacinnabarite ; Lower Lake, 

 chromite. 



Los Angeles Co. — Near Santa Anna River, anhydrite; Williams 

 Pass, chalcedony ; Soledad mines, chalcopyrite, garnet, gypsum ; 

 Mountain Meadows, garnet, in copper ore. 



Mariposa Co. — Chalcopyrite, itacolumyte ; Centreville, cinnabar ; 

 Pine Tree mine, tetraliedrite ; Burns Creek, limonite ; Geyer Gulch, 

 pyrophyllite ; La Victoria mine, azurite ! near Coulterville, cinnabar, 

 gold. 



Mono Co. — Partzite (stibiconite). 



Monterey Co. — Alisal mine, arsenic ; near Paneches, chalcedony ; 

 New Idria mine, cinnabar ; near New Idria, chromite, zaratite, chrome 

 garnet ; near Pacheco's Pass, stibnite. 



Napa Co. — Chromite. 



Nevada Co. — Grass Valley, gold! in quartz veins, with pyrite, 

 chalcopyrite, blende, arsenopyrite, galenite, quartz, biotite ; near 

 Truckee Pass, gypsum ; Excelsior Mine, molybdenite, with gold ; 

 Sweet Land, pyrolusite. 



Placer Co. — Miner's Ravine, epidote ! with quartz, gold. 



Plumas Co. — Genesee Valley, chalcopyrite ; Hope mines, bornite, 

 sulphur. 



Santa Barbara Co. — San Amedio Canon, stibnite, asphaltum, bitu- 

 men, maltha, petroleum, cinnabar, iodide of mercury ; Santa Clara 

 River, sulphur. 



San Bernardino Co. — Colorado River, agate, trona ; Temescal 

 Mts., cassiterite ; Russ District, galenite, cerussite; Francis mine, 

 cerargyrite ; Slate Range, thenardite, borax, common salt ; San Ber- 

 nardino Mts. . graphites. 



Santa Clara Co. — New Almaden, cinnabar, calcite, aragonite. ser- 

 pentine, chrysolite, quartz, aragotite ; North Almaden, chromite ; Mt. 

 Diabolo Range, magnesite, datolite, with vesuvianite and garnet. 



San Diego Co.--Carisso Creek, gypsum; San Isabel, tourmaline 

 orthoclase, garnet. 



San Francisco Co. — Red Island, pyrolusite and manganese ores. 



San Luis Obispo Co. — Asphaltum, cinnabar, native mercury, 

 chromite. 



