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Unnamed Opal occurrence [2], Mount Bradley, Shasta Retreat, Klamath Mountains, Siskiyou County, California, USAi
Regional Level Types
Unnamed Opal occurrence [2]Occurrence
Mount BradleyMountain
Shasta Retreat- not defined -
Klamath MountainsMountain Range
Siskiyou CountyCounty
CaliforniaState
USACountry

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Latitude & Longitude (WGS84):
41° 13' 23'' North , 122° 17' 27'' West
Latitude & Longitude (decimal):
41.22306,-122.29111
GeoHash:
G#: 9r3490qmd
GRN:
N28W67
Type:
Occurrence
Köppen climate type:
Csb : Warm-summer Mediterranean climate
Nearest Settlements:
PlacePopulationDistance
Dunsmuir1,582 (2017)2.3km
Mount Shasta3,296 (2017)9.8km
McCloud1,101 (2011)13.2km
Weed2,556 (2017)23.6km
Carrick131 (2011)25.7km
Mindat Locality ID:
95076
Long-form identifier:
mindat:1:2:95076:2
GUID (UUID V4):
0


A reported fire opal occurrence located in sec. 23, T39N, R4W, MDM, 1.5 km (5,000 feet) E of Mount Bradley. NOTE: MRDS database stated accuracy for this location is 10,000 meters.

Local rocks include Mesozoic gabbroic rocks, unit 1 (Trinity Ophiolite).

Select Mineral List Type

Standard Detailed Gallery Strunz Chemical Elements

Commodity List

This is a list of exploitable or exploited mineral commodities recorded at this locality.


Mineral List


1 valid mineral.

Gallery:

List of minerals arranged by Strunz 10th Edition classification

Group 4 - Oxides and Hydroxides
ⓘOpal4.DA.10SiO2 · nH2O
ⓘvar. Fire Opal4.DA.10SiO2 · nH2O

List of minerals for each chemical element

HHydrogen
Hⓘ OpalSiO2 · nH2O
Hⓘ Opal var. Fire OpalSiO2 · nH2O
OOxygen
Oⓘ OpalSiO2 · nH2O
Oⓘ Opal var. Fire OpalSiO2 · nH2O
SiSilicon
Siⓘ OpalSiO2 · nH2O
Siⓘ Opal var. Fire OpalSiO2 · nH2O

Other Databases

Link to USGS MRDS:10286923

Other Regions, Features and Areas containing this locality

North AmericaContinent
North America PlateTectonic Plate

This page contains all mineral locality references listed on mindat.org. This does not claim to be a complete list. If you know of more minerals from this site, please register so you can add to our database. This locality information is for reference purposes only. You should never attempt to visit any sites listed in mindat.org without first ensuring that you have the permission of the land and/or mineral rights holders for access and that you are aware of all safety precautions necessary.

References

(n.d.) Minerals Availability System (MAS), U.S. Bureau of Mines.file ID #0060930278
Murdoch, Joseph (1946), Progress on revision of Bulletin 113 “Minerals of California,” with notes on some new mineral occurrences: California Division Mines Report 42: 197-198; […(abstract): Geological Society of America Bulletin: 57: 1256]: 101.
(2005) Mineral Resources Data System (MRDS), US Geological Survey.
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