Chalcedony from California, USA

Nipomo Agate, etc.

Nipomo, San Luis Obispo County, California, USA

Myrickite

Knoxville, Knoxville Mining District, Napa County, California, USA

Agate

Gem Hill, Rosamond Hills, Rosamond, Mojave-Rosamond Mining District, Kern County, California, USA

Quartzine, etc.

Unnamed Chalcedony occurrence [3], Mopah Spring, Turtle Mountains, San Bernardino County, California, USA

Nipomo Agate, etc.

Nipomo, San Luis Obispo County, California, USA

Myrickite

Knoxville, Knoxville Mining District, Napa County, California, USA

Agate

Gem Hill, Rosamond Hills, Rosamond, Mojave-Rosamond Mining District, Kern County, California, USA

Quartzine, etc.

Unnamed Chalcedony occurrence [3], Mopah Spring, Turtle Mountains, San Bernardino County, California, USA

Nipomo Agate, etc.

Nipomo, San Luis Obispo County, California, USA

Myrickite

Knoxville, Knoxville Mining District, Napa County, California, USA

Agate

Gem Hill, Rosamond Hills, Rosamond, Mojave-Rosamond Mining District, Kern County, California, USA

Quartzine, etc.

Unnamed Chalcedony occurrence [3], Mopah Spring, Turtle Mountains, San Bernardino County, California, USA


USA
ⓘ California	[var. Carnelian] Mason, Anita (1976) The World of Rocks and Minerals. Larousse & Co., Inc., New York.
Alameda County Berkeley ⓘ Spruce Street Thunder Egg locality	The Mineralogist, 1937, vol. 5, No. 11, p.12 – “New Find – agate filled nodules – Berkeley, California”
ⓘ Unnamed gemstone occurrence [1]	[var. Agate] Pemberton, H. Earl (1983) Minerals of California. Van Nostrand Reinhold Company Inc. Jones, F.T. (1952) Iris Agate. American Mineralogist: 37: 578-587 Van Nostrand Reinholt Press: 344.
Hayward ⓘ La Vista Quarry and mill	Harris E. Mason specimen and photo
Alpine County Monitor - Mogul Mining District Leviathan Peak ⓘ Leviathan Mine	Pabst, Adolf (1940) Cryptocrystalline pyrite from Alpine County, California. American Mineralogist, 25 (6) 425-431
Silver Mountain Mining District Raymond Peak North Side of Raymond Peak ⓘ Unspecified Ferrierite occurrence (1)	Pemberton, H. Earl (1983) Minerals of California. Van Nostrand Reinhold Company Inc. Van Nostrand Reinholt Press: 380.
Amador County Fiddletown Mining District (Oleta Mining District) River Pines ⓘ Chrysoprase and Moss Opal deposits	Ech Noch Collection
Pardee Mining District Chrome Mountain ⓘ Ellis property (Boss Mine)	(2005) Mineral Resources Data System (MRDS), US Geological Survey.
Sunnybrook ⓘ Custer prospect (Dooley prospect; Custer Dooley prospect)	(2005) Mineral Resources Data System (MRDS), US Geological Survey.
Volcano Mining District ⓘ Volcano	(2005) Mineral Resources Data System (MRDS), US Geological Survey. Murdoch, Joseph & Robert W. Webb (1966), Minerals of California, Centennial Volume (1866-1966): California Division Mines & Geology Bulletin 189: 316. California Journal of Mines and Geology (1954): 50(1) January, 1954: 211
ⓘ Unknown diamond occurrence [1]	(2005) Mineral Resources Data System (MRDS), US Geological Survey.
Butte County Feather Falls Mining District Rogerville ⓘ Steep Hollow claims	(2005) Mineral Resources Data System (MRDS), US Geological Survey.
Calaveras County East Belt Mokelumne Hill Mining District Mokelumne Hill ⓘ Stockton Hill	Murdoch, Joseph & Robert W. Webb (1966), Minerals of California, Centennial Volume (1866-1966): California Division Mines & Geology Bulletin 189: 316. Mining and Scientific Press (1866), The “opal claims” of Stockton Hill: Mining and Scientific Press: 12: 146
Pardee Mining District Toyon ⓘ Hooten Ranch deposit	[var. Agate] (2005) Mineral Resources Data System (MRDS), US Geological Survey.
Colusa County Coast Ranges Stonyford ⓘ East Park Reservoir	[var. Agate] Johnson, H. C. 1971 Western Gem Hunters Atlas, 11th Edition: Cy Johnson & son, Susanville, Calif., 95 p.
Sugarloaf ⓘ Burgett prospect	(2005) Mineral Resources Data System (MRDS), US Geological Survey.
Sulphur Creek Mining District (Sulfur Creek Mining District; Wilbur Springs Mining District) Wilbur Springs ⓘ Juniper Mine (Rathburn group; Turkey Hill; Wild Turkey; Toothache; Lea-Grant; May Day; Last Resort; Old Kentucky)	Slowey, A.J., and Rytuba, J.J. (2008): USGS Open-File Report 08-1179
ⓘ Petray Mine (Judy Mine)	Slowey, A.J., and Rytuba, J.J. (2008): USGS Open-File Report 08-1179
El Dorado County East Belt Spanish Flat Mining District Mosquito Camp Mosquito Gulch ⓘ Unspecified Pb occurrence [1]	Murdoch, Joseph & Robert W. Webb (1966), Minerals of California, Centennial Volume (1866-1966): California Division Mines & Geology Bulletin 189: 304. Turner, Henry Ward (1902), Notes on unusual minerals from the Pacific states: American Journal of Science, 4th. Series: 13: 343-346 […(abstract): Mining and Scientific Press: 84: 296 (1902)]: 343
Fresno County ⓘ Panoche Hills	Murdoch, Joseph & Robert W. Webb (1966), Minerals of California, Centennial Volume (1866-1966): California Division Mines & Geology Bulletin 189: 317. Blake, Wm. P. (1866), Annotated catalogue of the principal mineral species hitherto recognized n California and the adjoining states and territories being a report of the California State Board of Agriculture. 31 pp., Sacramento: 9
Glenn County Black Butte Lake (Black Butte Reservoir) ⓘ Black Butte Reservoir occurrences	[var. Agate] Butler (1995), Rockhounding California.
Imperial County ⓘ Black Hills	[var. Agate] MacFall, P.M. (1951) Gem Hunter's Guide (1st ed.). Science and Mathematics Publishing Company, 187 pages.
Boulder Park ⓘ Unnamed Gemstone prospect [1]	(2005) Mineral Resources Data System (MRDS), US Geological Survey.
ⓘ Cargo Muchacho Mountains	[var. Agate] Pabian Agate Lexicon database
Chocolate Mountains Chocolate Mountains Mining District Mesquite District ⓘ Big Chief pit	Econ Geol (1992) 87:2002-2022
Paymaster Mining District ⓘ Midway Well	[var. Agate] Strong, M. F. 1971a Desert Gem Trails. A Field Guide to the Gems and Minerals of the Mojave and Colorado Deserts: Second Revised Edition, Gem Guides Book Co., Baldwin Park, CA, 80 p.
ⓘ Coyote Mountains
Palo Verde Mountains Palo Verde Mining District Palo Verde ⓘ Twin Buttes Agate fields	[var. Agate] Pemberton, H. Earl (1983) Minerals of California. Van Nostrand Reinhold Company Inc. Van Nostrand Reinholt Press: 345.
ⓘ Thumb Peak	[var. Agate] Amir Akhavan Collection
ⓘ Hauser beds (Hauser Geode beds; Hauser Beds Mine)	[var. Agate] Pemberton, H. Earl (1983) Minerals of California. Van Nostrand Reinhold Company Inc. Morton, Paul K. (1977) Geology and Mineral Resources of Imperial County California. County Report 7. California Division of Mines and Geology Vargas, G. and Vargas, M. (1960) Wiley Well. Desert Magazine: 23(11): 32-34 Ransom, J.E. (1955) Arizona gem trails and the Colorado Desert. Mineralogist Publishing Co., Portland, Oregon: 18-22 Henry, D.J. (1952), Gem Trail Journal, 2nd. edition, Long Beach, Calif., 93 pp.: 72-79 Van Nostrand Reinholt Press: 345. Butler, 1995. Rockhounding California, p.37.
ⓘ Potato Patch	Pemberton, H. Earl (1983) Minerals of California. Van Nostrand Reinhold Company Inc. Van Nostrand Reinholt Press: 345.
Plaster City ⓘ Yuha Basin	[var. Agate] Pabian Agate Lexicon database
Inyo County Amargosa Range Black Mountains Jubilee Pass ⓘ Unnamed Gemstone occurrence [2]	Murdoch, Joseph & Robert W. Webb (1966), Minerals of California, Centennial Volume (1866-1966): California Division Mines & Geology Bulletin 189: 317. Symons, Henry Heilbronner (1940), Quartz gem stones of California: Rocks & Minerals: 15: 41
Coso Hot Springs Coso Hot Springs deposit ⓘ Coso Mine (Devil's Kitchen; Atlas; Lynch & Lynch; Nicol; Walley-Mickey & Wheeler)	(2005) Mineral Resources Data System (MRDS), US Geological Survey.
ⓘ Wheeler Area Mine (Coso Mine)	(2005) Mineral Resources Data System (MRDS), US Geological Survey.
Inyo Mts (Inyo Range) Russ Mining District Reward ⓘ Reward Mine	Adams, Paul M. (2010) The Brown Monster and Reward mines, Inyo County, California. The Mineralogical Record, 41 (2) 175-193 Paul M. Adams (2000) "Microminerals from the Reward Mine, Inyo County, California." Mineral News, 16, #5.
Panamint Mts (Panamint Range) Cottonwood Mountains Ubehebe Mining District Big Dodd Spring ⓘ Lead King Mine (Lippincott Lead Mine; Lippincott Mine; Lippencott Mine; Confidence Nos 1 & 2 claims; Lead King Nos. 3 & 5-8 claims; Southern Lead Mine)	(2005) Mineral Resources Data System (MRDS), US Geological Survey.
Wildrose Mining District (Wild Rose Mining District) ⓘ Wildrose Spring	Bob Trimingham Collection.
Kern County ⓘ Boron	[var. Agate] Chenard, G., and Chenard, D. 1962 Kern County Agate: Lapidary Journal, v. 16, no. 1, p. 106-107.
California City ⓘ Castle Butte	[var. Agate] Pemberton, H. Earl (1983) Minerals of California. Van Nostrand Reinhold Company Inc. Troxel, Bennie W., Morton, Paul K. (1962) Mines and Mineral Resources of Kern County California. County Report 1. California Division of Mines and Geology Van Nostrand Reinholt Press: 345. Strong, M. F. 1971a Desert Gem Trails. A Field Guide to the Gems and Minerals of the Mojave and Colorado Deserts: Second Revised Edition, Gem Guides Book Co., Baldwin Park, CA, 80 p.
El Paso Mountains District Goler Heights ⓘ Rainbow Ridge	[Agate var. Agate-Jasper] Pemberton, H. Earl (1983) Minerals of California. Van Nostrand Reinhold Company Inc. Troxel, Bennie W., Morton, Paul K. (1962) Mines and Mineral Resources of Kern County California. County Report 1. California Division of Mines and Geology Van Nostrand Reinholt Press: 346.
Last Chance Canyon ⓘ Unspecified Chalcedony occurrence(s) [1]	[var. Agate] Pemberton, H. Earl (1983) Minerals of California. Van Nostrand Reinhold Company Inc. Troxel, Bennie W., Morton, Paul K. (1962) Mines and Mineral Resources of Kern County California. County Report 1. California Division of Mines and Geology Van Nostrand Reinholt Press: 345-346.
Ricardo ⓘ Red Rock Canyon prospects	[var. Agate] Pemberton, H. Earl (1983) Minerals of California. Van Nostrand Reinhold Company Inc. Troxel, Bennie W., Morton, Paul K. (1962) Mines and Mineral Resources of Kern County California. County Report 1. California Division of Mines and Geology Van Nostrand Reinholt Press: 346. MacLachlan, D. 1950 The Greatest Collecting Area: Lapidary Journal, v. 4, no. 2, p. 96-100. Berkholz, M. F. 1962b Map
Fremont Valley Saltdale ⓘ Unspecified Chalcedony occurrence [2]	Murdoch, Joseph & Robert W. Webb (1966), Minerals of California, Centennial Volume (1866-1966): California Division Mines & Geology Bulletin 189: 317. Kunz, George F. (1905) Gems, Jewelers' Materials, and Ornamental Stones of California. Bulletin 37 (2nd ed.) California State Mining Bureau
Loraine Mining District Sugarloaf Mountain ⓘ Horse Canyon Agate Beds (Cache Creek)	[var. Agate] Pemberton, H. Earl (1983) Minerals of California. Van Nostrand Reinhold Company Inc. Troxel, Bennie W., Morton, Paul K. (1962) Mines and Mineral Resources of Kern County California. County Report 1. California Division of Mines and Geology Johnson, H. C. 1971 Western Gem Hunters Atlas, 11th Edition: Cy Johnson & son, Susanville, Calif., 95 p. Van Nostrand Reinholt Press: 345.
Mojave-Rosamond Mining District (Mojave Mining District) Mojave ⓘ Soledad Mountain (Butte Mountain)	[var. Agate] Pemberton, H. Earl (1983) Minerals of California. Van Nostrand Reinhold Company Inc. Troxel, Bennie W., Morton, Paul K. (1962) Mines and Mineral Resources of Kern County California. County Report 1. California Division of Mines and Geology Van Nostrand Reinholt Press: 346.
Rosamond Rosamond Hills ⓘ Gem Hill	[var. Agate] Pemberton, H. Earl (1983) Minerals of California. Van Nostrand Reinhold Company Inc. Troxel, Bennie W., Morton, Paul K. (1962) Mines and Mineral Resources of Kern County California. County Report 1. California Division of Mines and Geology Van Nostrand Reinholt Press: 345.
Piute Mountains Green Mountain District Piute Peak (Piute Mountain) ⓘ Jimmie Mack claim	Murdoch, Joseph & Robert W. Webb (1966), Minerals of California, Centennial Volume (1866-1966): California Division Mines & Geology Bulletin 189: 78
Rademacher Mining District ⓘ Unnamed Opal-Chalcedony occurrence [1]	Murdoch, Joseph & Robert W. Webb (1966), Minerals of California, Centennial Volume (1866-1966): California Division Mines & Geology Bulletin 189: 317. Kunz, George Frederick (1900), Precious stones: Mineral Resources U.S., 1899: 54 (page = 454 ?)
Lake County Sulphur Creek Mining District (Sulfur Creek Mining District; Wilbur Springs Mining District) Clear Lake Oaks ⓘ Sulphur Bank Mine (Sulfur Bank Mine; Sulphur Bank deposits)	Rocks & Min.: 22:615-616.
Lassen County Hayden Hill Mining District Hayden Hill [town] Hayden Hill [summit] ⓘ Hayden Hill Mine	(2005) Mineral Resources Data System (MRDS), US Geological Survey.
Little Fredonyer Willard Creek ⓘ Unnamed Agate occurrence [1]	[var. Agate] Butler (1995), Rockhounding California: 155.
ⓘ Susanville	[var. Agate] Butler, 1995. Rockhounding California, p.158.
ⓘ Tuledad Canyon	[var. Agate] Robertson, D. 1970 Collecting in Tuledad County: Lapidary Journal, v. 24, no. 5, p. 737-739.
Los Angeles County Acton Mining District Acton Antelope Valley ⓘ Collecting Site Mine	Oakeshott, Gordon Blaisdell (1958) Geology and mineral deposits of San Fernando quadrangle, Los Angeles County, California. California Division of Mines Bulletin 172, 147 pp.
Agoura Hills ⓘ Archstone	[var. Agate] MarekC field collection 2014
ⓘ Melanophlogite outcrop	MarekC field collection 2014
ⓘ Canwood Mall excavation dump	Houseley, Bob (2013)
ⓘ Canwood St construction site 2014	M.Chorazewicz collection
ⓘ Cornell Road	Chorazewicz, M. (2014) Three New Melanophlogite Pseudomorph Localities From Santa Monica Mountains, Southern California, Bulletin of the Mineralogical Society of Southern California: 87(8) (August, 2014): 6-9.
ⓘ Kanan Quarry Ridge	Chorazewicz, M. (2014) Three New Melanophlogite Pseudomorph Localities From Santa Monica Mountains, Southern California, Bulletin of the Mineralogical Society of Southern California: 87(8) (August, 2014): 6-9.
ⓘ Kanan Road (Ferrierite locality)	[var. Agate] www.mineralsocal.org
ⓘ Kanan Road Quarry	Houseley, Bob (2013)
ⓘ Kanan Road roadcut #1 North side	Housley, R. (1995), Kanan Road rework allows access to fine ferrierite, Bulletin of the Mineralogical Society of Southern California: 65(2) (Feb 1995): 7.
ⓘ Kanan Road roadcut #1 South side	Housley, R. (1995), Kanan Road rework allows access to fine ferrierite, Bulletin of the Mineralogical Society of Southern California: 65(2) (Feb 1995): 7.
ⓘ Ladyface 1	Housley, R., 2013. Eleven New Melanophlogite Pseudomorph Occurrences in Southern California, Mindat.org article 1772.
ⓘ Ladyface 2	Housley, R., 2013. Eleven New Melanophlogite Pseudomorph Occurrences in Southern California, Mindat.org article 1772.
ⓘ Ladyface 3	Housley, R., 2013. Eleven New Melanophlogite Pseudomorph Occurrences in Southern California, Mindat.org article 1772.
ⓘ Lewis Road	DeVito, Alfred N., 1985. Microscoop (Lewis Road/Westlake Village microminerals). Bull. Min. Soc. So. Calif., Vol.55, no.10 (October 1985), p. 12. Housley, R., 2013. Eleven New Melanophlogite Pseudomorph Occurrences in Southern California, Mindat.org article 1772.
ⓘ Lobo Canyon	Housley, R., 2013. Eleven New Melanophlogite Pseudomorph Occurrences in Southern California, Mindat.org article 1772.
Antelope Valley Agua Dulce ⓘ Escondido Canyon Road - Hubbard Road area	[var. Agate] Pemberton, H. Earl (1983) Minerals of California. Van Nostrand Reinhold Company Inc. Sharp, W.E. (1959) Minerals from Los Angeles County, California. Printed privately, Los Angeles, California: 47 Oakeshott, Gordon Blaisdell (1958) Geology and mineral deposits of San Fernando quadrangle, Los Angeles County, California. California Division of Mines Bulletin 172, 147 pp.: 128 Van Nostrand Reinholt Press: 347.
Calabasas ⓘ Lost Hills Road	Housley, R., 2013. Eleven New Melanophlogite Pseudomorph Occurrences in Southern California, Mindat.org article 1772.
ⓘ Mountain View	Housley, R., 2013. Eleven New Melanophlogite Pseudomorph Occurrences in Southern California, Mindat.org article 1772.
El Segundo ⓘ Redondo Beach Chalcedony deposit (Redondo deposit)	USGS MRDS database (2005). Gay, T.E. and Hoffman, S.R. (1954) Mines and mineral deposits of Los Angeles County, California. California Journal of Mines and Geology, California Division of Mines (Report 50): 50(3&4): 688
Lang ⓘ Tick Canyon	[var. Agate] Berkholz, M. F. 1962b Map
Tick Canyon Borate deposit ⓘ Lang Mine	Rocks & Min.: 11:156.
Los Angeles Hollywood Hills Hollywood Cahuenga Pass Cahuenga Boulevard roadcut ⓘ Neuerberg locality 9	Neuerberg, George Joseph (1951), Minerals of the eastern Santa Monica Mountains, Los Angeles city: American Mineralogist: 36: 156-160.
Malibu ⓘ Teal Terrace	Housley, R., 2013. Eleven New Melanophlogite Pseudomorph Occurrences in Southern California, Mindat.org article 1772.
Mint Canyon [town] ⓘ Mint Canyon	[var. Agate] Schwartz in Rocks and Minerals, v. 19, no. 10, p. 311.
ⓘ Redondo Beach	[var. Agate] Rocks & Minerals (1943): 18: 243.
Santa Catalina Island ⓘ Potts Valley	[var. Agate] Irelan, William, Jr. (1890b), Tenth annual report of the State Mineralogist, California Mining Bureau Report 10, 983 pp.
ⓘ Marin County	[var. Agate] Pelletier, 1962. Mineral Species & Localities of Marin County
ⓘ Bolinas	Mitchell, J.R. (1995) Gem Trails of Northern California.
ⓘ Agate Beach	Mitchell, J.R. (1995) Gem Trails of Northern California.
ⓘ Rodeo Beach	Elder, W. P. (2001). Geology of the Golden Gate Headlands. Geology and Natural History of the San Francisco Bay Area: A Field-trip Guidebook. US Geological Survey Bulletin, 2188.
Modoc County Goose Lake ⓘ Unnamed Agate deposit [1]	[var. Agate] Pemberton, H. Earl (1983) Minerals of California. Van Nostrand Reinhold Company Inc. Murdoch, Joseph & Robert W. Webb (1966), Minerals of California, Centennial Volume (1866-1966): California Division Mines & Geology Bulletin 189: 317. Sterrett, Douglas Bovard (1909), Precious stones: Mineral Resources U.S., 1908, part 2: 807 Van Nostrand Reinholt Press: 347.
Mono County Bodie Hills Masonic Mining District Masonic Mountain ⓘ Chemung Mine (Masonic Mines Association Mine)	MarekC pers. coll. 2017-2018
New York Hill ⓘ Serita Mine	(2005) Mineral Resources Data System (MRDS), US Geological Survey.
Monterey County Parkfield Mining District Parkfield ⓘ Patriquin Mine (Cholame-Parkfield Mine; Paloma Mining Company; Franciscan Mine; Pitts Mine)	(2005) Mineral Resources Data System (MRDS), US Geological Survey.
ⓘ Mule Mts (Palo Verde Mts)	[var. Agate] Strong, M. F. 1971a Desert Gem Trails. A Field Guide to the Gems and Minerals of the Mojave and Colorado Deserts: Second Revised Edition, Gem Guides Book Co., Baldwin Park, CA, 80 p.
Napa County Knoxville Mining District Knoxville ⓘ McLaughlin Mine (Manhattan Mine)	Pemberton, H. Earl (1983) Minerals of California. Van Nostrand Reinhold Company Inc. Van Nostrand Reinholt Press: 347.
Lombard ⓘ Borges Quarry	Dunning, G.E. & Cooper, J.F. (2002): Pseudomorphic melanophlogites from California. Mineralogical Record 33: 237-242
Oakville Mining District Oakville ⓘ Bella Oak Mine (Belle Oak Mine; Oakville Mine; Bella Union Mine)	Pemberton, H. Earl (1983) Minerals of California. Van Nostrand Reinhold Company Inc. Bradley, W.W. (1918), Quicksilver resources of California, with a section on metallurgy and ore dressing: California Mining Bureau. Bulletin 78, 389 pp.: 80-81 Van Nostrand Reinholt Press: 118.
ⓘ La Joya Mine	Pemberton, H. Earl (1983) Minerals of California. Van Nostrand Reinhold Company Inc. Ransome, Alfred Leslie & J.L. Kellogg (1939), Quicksilver resources of California: California Division Mines Report 35: 410
Nevada County Grass Valley Mining District Grass Valley Empire Star group (Empire Star Mines Company holdings) ⓘ Pennsylvania Mine [1] (Pennsylvania Consolidated Qtz; Pennsylvania-W.Y.O.D.; Pennsylvania vein; Pennsylvania-Wyod; Wyod)	(2005) Mineral Resources Data System (MRDS), US Geological Survey.
Golden Center group (Cabin Flat Mine; Rock Roche Mine; Dromedary Mine; Scotia Mine; Peabody Mine; Garage/Dromedary/Berriman/Peabody) ⓘ Golden Center Mine (Garage vein; Sleep vein; Church Hill vein)	(2005) Mineral Resources Data System (MRDS), US Geological Survey.
La Barr Meadows ⓘ Allison Ranch Quartz Mine (Allison Ranch Mine; Allison Ranch vein; Allison Ranch Qtz.; Crossus Consolidated Mine; Stanton Mine)	(2005) Mineral Resources Data System (MRDS), US Geological Survey.
Orange County Newport Beach ⓘ Reef Point	Housley, R., 2013. Eleven New Melanophlogite Pseudomorph Occurrences in Southern California, Mindat.org article 1772.
Placer County ⓘ Ophir Mining District (Auburn Mining District; Duncan Hill Mining District)	(2005) Mineral Resources Data System (MRDS), US Geological Survey.
Ophir ⓘ Spanish Mine [1] (Central Consolidated Mine; Central Cons.; Spanish & Humbug Cons. claims; Humbug Mine; Spanish vein)	Murdoch, Joseph & Robert W. Webb (1966), Minerals of California, Centennial Volume (1866-1966): California Division Mines & Geology Bulletin 189: 317.
Riverside County ⓘ Blythe	Murdoch, Joseph & Robert W. Webb (1966), Minerals of California, Centennial Volume (1866-1966): California Division Mines & Geology Bulletin 189: 317.
Chuckwalla Mountains Chuckwalla Spring ⓘ Unnamed Agate occurrence [1]	[var. Agate] Strong, M. F. 1971a Desert Gem Trails. A Field Guide to the Gems and Minerals of the Mojave and Colorado Deserts: Second Revised Edition, Gem Guides Book Co., Baldwin Park, CA, 80 p.
Jurupa Valley Crestmore Crestmore quarries Sky Blue Hill ⓘ Commercial Quarry	Woodford, A.O., Crippen, R.A., and Garner, K.B. (1941) Section Across Commercial Quarry, Crestmore, California. American Mineralogist: 26: 351-381.
Little Chuckwalla Mountains ⓘ Unnamed Agate occurrence [2]	[var. Agate] (2005) Mineral Resources Data System (MRDS), US Geological Survey.
Mule Mountains District (Hodges Mountain District) ⓘ Opal Hill Mine
ⓘ Unspecified Fire Agate occurrences [1]	Pemberton, H. Earl (1983) Minerals of California. Van Nostrand Reinhold Company Inc. Saul, R.B., Evans, J.R., and Gray, C.H. (1970) Mines and mineral resources of Riverside County. California Division of Mines and Geology County Report 9. Unpublished manuscript: 279 Murdoch, Joseph & Robert W. Webb (1966), Minerals of California, Centennial Volume (1866-1966): California Division Mines & Geology Bulletin 189: 317. Strong, Mary Frances Berkholz (1964a), Fire agate in the Mule Mountains: Gems & Minerals, No. 319: 16-18, April 1964: 16. Strong, Mary Frances Berkholz (1964a), Fire agate in the Mule Mountains: Gems & Minerals, No. 319, April 1964: 16-18 Henry, D.J. (1947), Wiley Well district a mecca for the collector: The Mineralogist: 15: 171-176 Van Nostrand Reinholt Press: 348.
ⓘ Wiley's Well	[var. Agate] Perry, L. 1984 Wiley Well revisited: Gems and Minerals, no. 565, p. 67-71. Perry, L. E. 1961 Varied agate types and locations in California: Lapidary Journal, v. 15, no. 3, p. 308-314.
Orocopia Mts (Dos Palmas Mts) Dos Palmas District ⓘ Orocopia Canyon	[var. Agate] Perry, L. E. 1961 Varied agate types and locations in California: Lapidary Journal, v. 15, no. 3, p. 308-314.
Pinto Mountain ⓘ Cow Bell Mine (Joel Mine)	Kohler-Antablin, S. (1994): Mineral Land Classification of the Eastern Half of Riverside County, CA. In: Open File Report 94 -11.
ⓘ Desert King Mine (Big Cross claim; Desert King claim; Desert Mining Mine)	CDMG OFR 94-11 " Mineral Land Classification of the Eastern Half of Riverside Co. CA"
Radec ⓘ Black Hills
San Benito County Buck Peak ⓘ El Cajon Mine (Clough Mine; Gough Mine; Mathews Mine)	(2005) Mineral Resources Data System (MRDS), US Geological Survey.
Emmett ⓘ Phipps Mine	Murdoch, Joseph & Robert W. Webb (1966), Minerals of California, Centennial Volume (1866-1966): California Division Mines & Geology Bulletin 189: 317.
Goat Mountain ⓘ Clear Creek claim	Lapis (1994): 19(12): 40. Erd, Richard C., Bonardi, Maurizio, Criddle, Alan J., Roberts, Andrew C., Page, Yvon Le, Gabe, Eric J. (1993) Edoylerite Hg²⁺₃Cr⁶⁺O₄S₂ a new mineral from the Clear Creek Claim, San Benito County, California. The Mineralogical Record, 24 (6) 471-475
Picacho Peak ⓘ Picacho Mine (Ramirez Consolidated Mine; Picachos Mine; Los Picachos Mine; Picahotes Mine; Benta Mine; Hernandez Mine; Ramirez Mine; Bonanza Mine)	Murdoch, Joseph & Robert W. Webb (1966), Minerals of California, Centennial Volume (1866-1966): California Division Mines & Geology Bulletin 189: 379. Rogers, Austin Flint (1912), Notes on rare minerals from California: Columbia University, School of Mines Quarterly: 33: 374
San Bernardino County Alvord Mountain Alvord District Alvord Peak ⓘ Alvord Mine	[var. Agate] Bruce Ueno blog - www.mindat.org/blog.php/1416/loc-87962.html
Baldwin Lake District Doble (Bairdstown) ⓘ Canyon Spring occurrence	Murdoch, Joseph & Robert W. Webb (1966), Minerals of California, Centennial Volume (1866-1966): California Division Mines & Geology Bulletin 189: 318 Sterrett, Douglas Bovard (1911), Gems and precious stones. Mineral Resources of the United States for 1910, part 2 Department of the Interior, U.S. Geological Survey: 872
Barstow Mining District Hinkley Mount General (Mt General) ⓘ Pedry Mine (San Antonio Mine; Pedry deposit; Golden Witch Mine; Golden Witch deposit)	R.M. Housley and R.E. Reynolds (2002) Mineralogical Survey of the Mount General Area. Abstracts from the 2002 Desert Symposium. California State University, Desert Studies Consortium pp61-63
Mitchel Range ⓘ Barium Queen Mine	Pemberton, H. Earl (1983) Minerals of California. Van Nostrand Reinhold Company Inc. Murdoch, Joseph & Robert W. Webb (1966), Minerals of California, Centennial Volume (1866-1966): California Division Mines & Geology Bulletin 189: 317. Van Nostrand Reinholt Press: 348.
ⓘ Mud Hills (Strontium Hills)	Pemberton, H. Earl (1983) Minerals of California. Van Nostrand Reinhold Company Inc. Van Nostrand Reinholt Press: 348.
ⓘ Chalcedony Pseudomorphs occurrence	Murdoch, Joseph & Robert W. Webb (1966), Minerals of California, Centennial Volume (1866-1966): California Division Mines & Geology Bulletin 189: 318
Bell Mountain ⓘ Turtle Mountain	[var. Agate] Strong, M. F. 1966c Agate Hill in the Turtle Mountains: Gems and Minerals, no. 343, p. 14-16.
Bristol Mountains Amboy area ⓘ New Method Mine	[var. Agate]
ⓘ Cady Mountains	[var. Agate]
Afton ⓘ Afton Canyon	[var. Agate] Chapman, E. W. 1937 Barstow desert localities described: The Mineralogist, v. 5, no. 1, p. 9-10, 111-114. Barstow Syncline, Rosamond Section in Antelope Valley and Red Rock Canyon, Upper Mio-L.Plio. Coral chalcedony, Afton Canyon, Myrickite, Opal Mt E of Hinkley, CA, Pb Pipe Spr, Black Canyon
ⓘ Mojave River Road	[var. Agate] Beste, Bob (2005) Location Guide for Rockhounds in the United States (3rd ed.)
ⓘ Wide Valley Agate occurrence	[var. Agate]
Calico Mts (Calico Hills) ⓘ Calico District (Daggett District; Calico-Daggett area)	Mayo, Alan L. (1972) Geology And Ore Deposits Of The South-Central Calico Mountains. California State University. San Diego.
Eagle Crags ⓘ Unnamed Agate-Quartz occurrence [1]	[var. Agate] Perry, L. E. 1961 Varied agate types and locations in California: Lapidary Journal, v. 15, no. 3, p. 308-314.
ⓘ Unnamed Hg occurrence [3]	Murdoch, Joseph & Robert W. Webb (1966), Minerals of California, Centennial Volume (1866-1966): California Division Mines & Geology Bulletin 189: 317. Sterrett, Douglas Bovard (1914), Gems and precious stones. Mineral Resources of the United States for 1913 part 2 Department of the Interior, U.S. Geological Survey: 651
ⓘ Goffs	[var. Agate] Perry, L. E. 1961 Varied agate types and locations in California: Lapidary Journal, v. 15, no. 3, p. 308-314.
Granite Mts [3] Myrick Spring ⓘ Myrick Spring occurrence	Bradley, W.W. (1918), Quicksilver resources of California, with a section on metallurgy and ore dressing: California Mining Bureau. Bulletin 78, 389 pp.: 191.
Lucerne Valley Limestone District Lucerne Valley ⓘ White Knob Quarry	Brown, Howard J., (2019) Geology of White Knob Quarry, Southern California Friends of Mineralogy 2019 Spring Symposium presentation.
Newberry Mountains Newberry Springs ⓘ Black Raven prospect (Lankin; Newberry)	(2005) Mineral Resources Data System (MRDS), US Geological Survey.
Old Woman Mountains Old Woman District Mercury Mountain ⓘ Red Devil claim	(2005) Mineral Resources Data System (MRDS), US Geological Survey.
Opal Mountain ⓘ Opal Mountains Agate Field prospect (Black Mountain; Black Mtn)	[var. Agate]
Owlshead Mountains ⓘ Unnamed Hg occurrence [4]	Murdoch, Joseph & Robert W. Webb (1966), Minerals of California, Centennial Volume (1866-1966): California Division Mines & Geology Bulletin 189: 149, 317. Bradley, W.W. (1918), Quicksilver resources of California, with a section on metallurgy and ore dressing: California Mining Bureau. Bulletin 78: 123 Sterrett, Douglas Bovard (1914), Gems and precious stones. Mineral Resources of the United States for 1913 part 2 Department of the Interior, U.S. Geological Survey: 651
Piute Mts [S] Mountain Spring Camp ⓘ Idria Quicksilver group (Turtle Dove claim; Turtle Dove Quicksilver prospect)	(2005) Mineral Resources Data System (MRDS), US Geological Survey.
Quail Mountains Brown Mountain ⓘ Unnamed Gemstone occurrence [14]	Murdoch, Joseph & Robert W. Webb (1966), Minerals of California, Centennial Volume (1866-1966): California Division Mines & Geology Bulletin 189: 318 Sterrett, Douglas B. (1913) Gems and Precious Stones - in 1912. US Geological Survey, Washington, D. C.
Quail Spring ⓘ Unnamed Chalcedony prospect [1] (Gem Mineral prospect; Unnamed prospect)	(2005) Mineral Resources Data System (MRDS), US Geological Survey.
Robbers Mountain ⓘ Unnamed Agate-Quartz occurrence [2]	[var. Agate] Perry, L. E. 1961 Varied agate types and locations in California: Lapidary Journal, v. 15, no. 3, p. 308-314.
Silver Lake Mining District Soda Mountains Zzyzx Blue Bell Mine ⓘ B-Site	Collected by and in the collection of Alex Earl
ⓘ C-Site	Collected by and in the collection of Alex Earl
ⓘ Turtle Mountains	Amir Akhavan Collection
Mopah Spring (Mau`upah; Maupah; Mopah Springs) ⓘ Unnamed Chalcedony occurrence [3]
Van Winkle Mountain ⓘ Unnamed Chalcedony occurrence [2]	(2005) Mineral Resources Data System (MRDS), US Geological Survey.
ⓘ Wingate Pass (Windy Gap)	[var. Agate] Hutter's, Lapidary Journal, v. 10, no. 1, p. 65
Yucaipa Crafton Hills ⓘ Crafton Hills rhodonite property	Anonymous (1962), Rhodonite: Gems and Minerals, No. 294 (Mar 1962): 18-20
ⓘ San Bernardino Mountains	Murdoch, Joseph & Robert W. Webb (1966), Minerals of California, Centennial Volume (1866-1966): California Division Mines & Geology Bulletin 189: 317. Kunz, George Frederick (1901), Precious stones: Mineral Resources U.S., 1900: 763
San Diego County Pala Mining District Pala ⓘ Tourmaline Queen Mountain (Pala Mtn; Queen Mtn)	Jahns, Richard Henry & Wright, Lauren A. (1951), Gem and lithium-bearing pegmatites of the Pala district, San Diego County, California. California Division of Mines Special Report 7-A: p. 31
San Ysidro Mountains Dulzura Southeast of Dulzura ⓘ Unnamed gemstone occurrence	Murdoch, Joseph & Robert W. Webb (1966), Minerals of California, Centennial Volume (1866-1966): California Division Mines & Geology Bulletin 189: 318 Kunz, George Frederick (1906), Precious stones: Mineral Resources U.S., 1905: 1323-1358
San Francisco County ⓘ San Francisco	www.missourigeologists.org/Min-Loc1-2005.pdf.
Duboce Street near Market Street ⓘ United States Mint site	Murdoch, Joseph & Robert W. Webb (1966), Minerals of California, Centennial Volume (1866-1966): California Division Mines & Geology Bulletin 189: 165 Bradley, W.W. (1937), Thirty-third report of the State Mineralogist: California Division Mines Report 33: 71
San Luis Obispo County ⓘ Nipomo	[var. Agate] Lapidary Journal, 1954 Rock Hound Buyer's Guide, p. 135.
Santa Lucia Mts (Santa Lucia Range) Adelaide Mining District (Adelaide Klau Mining District) Adelaida Klau Mine group ⓘ Klau Mine (Sierra Morena Mine; Karl Mine; Santa Cruz Mine; Sunderland Mine; Carson Mine)	Murdoch, Joseph & Robert W. Webb (1966), Minerals of California, Centennial Volume (1866-1966): California Division Mines & Geology Bulletin 189: 255. Woodhouse, C.D. & R.M. Norris (1957a), A new occurrence of millerite American Mineralogist: 42: 113-115
Cambria-Oceanic Mining District Cambria ⓘ Black Mountain area	Ernst, W.G. and C.A. Hall (1975) Feldspathic geodes near Black Mountain, western San Luis Obispo County, California. American Mineralogist: 60: 1105-1112
ⓘ Cambria Mine (Bank Mine; Red Hill workings; La Trinidad Mine)	[var. Agate] Joseph Freillich photo
ⓘ Moonstone Beach	[var. Agate] Krissa Klein collection Butler, 1995. Rockhounding California, p.124. [as "moonstone"]
Rinconada ⓘ Rinconada Mine (Rinconada deposit; Claus Mine; San Jose Valley)	Murdoch, Joseph & Robert W. Webb (1966), Minerals of California, Centennial Volume (1866-1966): California Division Mines & Geology Bulletin 189: 318
San Mateo County Pescadero ⓘ Pescadero Beach Mine	Mineralogical Record (2002) 33:237-242 Murdoch, Joseph & Robert W. Webb (1966), Minerals of California, Centennial Volume (1866-1966): California Division Mines & Geology Bulletin 189: 318 Kunz, George F. (1905) Gems, Jewelers' Materials, and Ornamental Stones of California. Bulletin 37 (2nd ed.) California State Mining Bureau
Santa Barbara County ⓘ Jalama Beach	[var. Agate]
Santa Clara County Black Wonder Mining District Red Mountain ⓘ Kelley prospect	(2005) Mineral Resources Data System (MRDS), US Geological Survey.
Coyote Mining District Coyote ⓘ Tilton Ranch (California-Nevada Quicksilver Mining Company; Coyote)	Murdoch, Joseph & Robert W. Webb (1966), Minerals of California, Centennial Volume (1866-1966): California Division Mines & Geology Bulletin 189: 318
Morgan Hill Cochrane Ranch (Cochran Ranch; Jackson Ranch) Cochrane Ranch (Cochran Ranch) area ⓘ Anderson Lake	[var. Agate] Butler, 1995. Rockhounding California, p.135.
New Almaden Mining District New Almaden ⓘ Guadalupe Mine	Rocks & Minerals (1948): 23: 797. Rocks & Minerals (1944): 19: 346-347
ⓘ New Almaden Mine (New Almaden Mines)	Bradley, W.W. (1918), Quicksilver resources of California, with a section on metallurgy and ore dressing: California Mining Bureau. Bulletin 78, 389 pp.: 191.
San Jose Lone Hill ⓘ Lone Hill Quarry (Mirasson Brothers Quarry)	Eugene Cisneros
Stayton Mining District (McLeod Mining District; Panoche Mining District) Pacheco Peak ⓘ Comstock Mine	(2005) Mineral Resources Data System (MRDS), US Geological Survey.
Shasta County Klamath Mountains East Shasta Copper - Zinc Mining District Heroult ⓘ Pit River Consolidated Mines (Pit River Mine)	(2005) Mineral Resources Data System (MRDS), US Geological Survey.
Sierra County Alleghany Mining District (Forest Mining District) Alleghany ⓘ 16 to 1 Mine (Sixteen-to-One Mine; Original Sixteen-to-One Mine)	(2005) Mineral Resources Data System (MRDS), US Geological Survey.
Forest ⓘ Evans prospect (Oak)	(2005) Mineral Resources Data System (MRDS), US Geological Survey.
ⓘ Oak Mine (Evans Mine)	(2005) Mineral Resources Data System (MRDS), US Geological Survey.
Mack House ⓘ Roye-Sum Mine	(2005) Mineral Resources Data System (MRDS), US Geological Survey.
Siskiyou County Bogus Mountain ⓘ Bogus Mountain gemstone occurrence	Murdoch, Joseph & Robert W. Webb (1966), Minerals of California, Centennial Volume (1866-1966): California Division Mines & Geology Bulletin 189: 318 Symons, Henry Heilbronner (1940), Quartz gem stones of California: Rocks & Minerals: 15: 41
ⓘ Jenne Creek	[var. Sard] Dorothy M. Schlegal (1957) Gem Stones of the United States : USGS Bulletin 1042-G
Klamath Mountains Cinnabar Camp ⓘ Unnamed Gemstone occurrence [1]	[var. Agate] (2005) Mineral Resources Data System (MRDS), US Geological Survey.
Sonoma County Coast Range Guerneville Mining District Guerneville ⓘ Great Eastern and Mount Jackson Mine	(2005) Mineral Resources Data System (MRDS), US Geological Survey.
West Mayacmas Mining District Castle Rock Springs area ⓘ Socrates Mine	Fen Cooper (2002) Mineral News, 18, #10, 1-8. Bradley, W.W. (1918), Quicksilver resources of California, with a section on metallurgy and ore dressing: California Mining Bureau. Bulletin 78, 389 pp.: 191.
Cloverdale ⓘ Livermore Quicksilver Mine	(2005) Mineral Resources Data System (MRDS), US Geological Survey.
North Fork Little Sulphur Creek ⓘ Culver-Baer Mine	Econ Geol (1997) 92:20-28 Quicksilver resources of California: with a section on metallurgy and ore ... By Walter Wadsworth Bradley (1917)
Tulare County Ivanhoe Venice Hills ⓘ Unnamed Semi-precious Gemstone occurrence [1]	MacFall (1951), Gem Hunter's Guide, 1st ed.
Ventura County ⓘ Mussel Shoals	Troy Schmidt
Thousand Oaks ⓘ Rolling Oaks Drive	DeVito, A. N. (1992), Brookite and stilbite in the Santa Monica Mountains. Bull. Min. Soc. So. Calif.: 62(2) (Feb 1992): 7.
Ventura ⓘ Rincon beaches	Pemberton, H. Earl (1983) Minerals of California. Van Nostrand Reinhold Company Inc. Ransom, J.E. (1966) The rocks and fossils of California’s Rincon. Gems and Minerals: 351: 30-32 Van Nostrand Reinholt Press: 350

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