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Opal from
Kramer Borate deposit, Boron, Kramer District (Kramer Borate District), Kern Co., California, USA

Mineral Species
Species:Opal
Formula:SiO2 · nH2O
Description
Comments:Occurs as masses up to 3 cm; some dense, white material, apparently pseudomorphic after ulexite.
Colour:Brownish to gray, white
Quality of samples:not specified / average specimens
Confirmation
Validity:Believed Valid
References
References:Morgan, V. and Erd, R.C. (1969) Minerals of the Kramer borate district, California California Division of Mines and Geology Mineral Information Service: 22(9&10): 165, 169; Pemberton, H. Earl (1983), Minerals of California; Van Nostrand Reinholt Press: 355.
Data
Mineral Data:Click here to view Opal data
Locality Data:Click here to view Kramer Borate deposit, Boron, Kramer District (Kramer Borate District), Kern Co., California, USA
Localities for Opal in this Region
Vanuray prospect (Amargo Bentonite deposit), West Baker, Kramer Borate deposit, Boron, Kramer District (Kramer Borate District), Kern Co., California, USA
Nearest other occurrences of Opal
35.4km (22.0 miles) A Mabel S claim, Randsburg, Rand District (Randsburg District), Rand Mts, Kern Co., California, USA
45.5km (28.3 miles) B Unnamed Opal-Perlite prospects [1], Opal Mountain, San Bernardino Co., California, USA
46.1km (28.7 miles) C Opal Mountains Agate Field prospect (Black Mountain), Opal Mountain, San Bernardino Co., California, USA
46.3km (28.8 miles) D Red Rock Canyon prospects, Ricardo, El Paso Mountains District, El Paso Mts, Kern Co., California, USA
47.4km (29.4 miles) E Opal Mountain, San Bernardino Co., California, USA
48.0km (29.8 miles) F Barnett Opal Mine, Silica Gem claims, Last Chance Canyon, El Paso Mountains District, El Paso Mts, Kern Co., California, USA
48.1km (29.9 miles) G Nowak Mine (Last Chance Opal Mine; Nowak Fire Opal Mine; Cowden Mine), Silica Gem claims, Last Chance Canyon, El Paso Mountains District, El Paso Mts, Kern Co., California, USA
49.0km (30.4 miles) H Petrified Forest, Ricardo, El Paso Mountains District, El Paso Mts, Kern Co., California, USA
65.0km (40.4 miles) I Lead Pipe Springs, Fort Irwin, San Bernardino Co., California, USA
80.4km (50.0 miles) J Collecting Site Mine, Antelope Valley, Acton, Acton District, Los Angeles Co., California, USA
82.6km (51.3 miles) K Searles Lake, San Bernardino Co., California, USA
93.4km (58.0 miles) L Tick Canyon, Lang, Los Angeles Co., California, USA
95.2km (59.1 miles) M Black Raven prospect (Lankin; Newberry), Newberry Springs, Newberry Mts, San Bernardino Co., California, USA
95.8km (59.5 miles) N White Knob Quarry, Lucerne Valley, Lucerne Valley Limestone District, San Bernardino Co., California, USA
103.8km (64.5 miles) O Katz Diatomaceous Shale prospect, Kagel Canyon, San Gabriel Mts, Los Angeles Co., California, USA
107.8km (67.0 miles) P Featherstone deposit (Feather-Stone Insulation Company), Charter Oak, Los Angeles Co., California, USA
109.3km (67.9 miles) Q Wheeler Area Mine (Coso Mine), Coso Mine (Devil's Kitchen; Atlas; Lynch & Lynch; Nicol; Walley-Mickey & Wheeler), Coso Hot Springs deposit, Coso Hot Springs, Coso District (New Coso District), Coso Mts (Coso Range), Inyo Co., California, USA
110.0km (68.3 miles) R Unnamed lava flow [1], Sugarloaf Mountain, Coso District (New Coso District), Coso Mts (Coso Range), Inyo Co., California, USA
110.7km (68.8 miles) S Little Lake Perlite deposits (Desert Materials Corp. deposit), Sugarloaf Mountain, Coso District (New Coso District), Coso Mts (Coso Range), Inyo Co., California, USA
111.5km (69.3 miles) T Coso Mine (Devil's Kitchen; Atlas; Lynch & Lynch; Nicol; Walley-Mickey & Wheeler), Coso Hot Springs deposit, Coso Hot Springs, Coso District (New Coso District), Coso Mts (Coso Range), Inyo Co., California, USA
114.1km (70.9 miles) U Henshaw Quarry, Bloomington, San Bernardino Co., California, USA
115.3km (71.7 miles) V Jensen Quarry (Oak Quarry), Jurupa, Jurupa Mts, Riverside Co., California, USA
116.5km (72.4 miles) W Commercial Quarry, Sky Blue Hill, Crestmore quarries, Crestmore, Riverside Co., California, USA
121.3km (75.3 miles) X Mojave River Road, Afton Canyon, Afton, Cady Mts, San Bernardino Co., California, USA
127.6km (79.3 miles) Y Afton Canyon, Afton, Cady Mts, San Bernardino Co., California, USA
135.2km (84.0 miles) Z Fillmore deposit, Fillmore, Ventura Co., California, USA
136.0km (84.5 miles) 0 Green Velvet claims (Green Velvet claim; Green Velvet group), Coso District (New Coso District), Coso Mts (Coso Range), Inyo Co., California, USA
136.6km (84.9 miles) 1 Blue Bell Mine (Blue Bell claims; Hard Luck Mine; Hard Luck claims; Atkinson), Zzyzx (Fort Soda; Soda; Soda Springs; Zzyzx Mineral Spring Resort), Soda Mts, Silver Lake District, San Bernardino Co., California, USA
137.4km (85.4 miles) 2 Custer Mine, Darwin, Darwin District, Darwin Hills, Inyo Co., California, USA
139.2km (86.5 miles) 3 Canwood St construction site 2014, Agoura Hills, Santa Monica Mts, Los Angeles Co., California, USA
142.5km (88.6 miles) 4 Archstone, Agoura Hills, Santa Monica Mts, Los Angeles Co., California, USA
145.0km (90.1 miles) 5 Rolling Oaks Drive, Thousand Oaks, Santa Monica Mts, Ventura Co., California, USA
147.0km (91.3 miles) 6 Aga Mine, Otto Mountain, Baker, Soda Mts, Silver Lake District, San Bernardino Co., California, USA
152.0km (94.4 miles) 7 Dicalite Mine (Walteria; Palos Verde Ranch; Dicalite Company), Rolling Hill Estates, Los Angeles Co., California, USA
154.1km (95.8 miles) 8 Point Dume deposit, Point Dume, Malibu, Los Angeles Co., California, USA
155.2km (96.4 miles) 9 Unnamed Diatomaceous Earth quarry, Rolling Hills, Palos Verdes peninsula, Los Angeles Co., California, USA
Mineral and/or Locality  
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