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Chambers Mine (George Len), Canyon City District, Grant Co., Oregon, USAi
Regional Level Types
Chambers Mine (George Len)Mine
Canyon City DistrictMining District
Grant Co.County
OregonState
USACountry

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Key
Lock Map
Latitude & Longitude (WGS84):
44° 21' 4'' North , 118° 48' 49'' West
Latitude & Longitude (decimal):
Locality type:
Nearest Settlements:
PlacePopulationDistance
Canyon City672 (2017)11.7km
John Day1,680 (2017)13.2km
Prairie City880 (2017)14.9km
Mount Vernon506 (2017)24.9km
Seneca193 (2017)27.2km


REF:Deposit:: ALLEN, J.E., 1941, CHROMITE DEPOSITS OF OREGON (REVISED ED.): OREGON DEPARTMENT OF GEOLOGY AND MINERAL INDUSTRIES BULLETIN 9, P. 60-62.
Deposit:: OREGON DEPARTMENT OF GEOLOGY AND MINERAL INDUSTRIES, 1941, OREGON METAL MINES HANDBOOK, NORTHEAS
Deposit:: U.S. GEOL. SURVEY BULLETIN 725-A, 1920, P. 52.
Deposit:: OR. DEPT. GEOL. AND MIN. INDUST. BULLETIN 9, 1938, P. 60.
Deposit:: OR. DEPT. GEOL. AND MIN. INDUST. BULLETIN 14-B, 1941, P. 21.
Deposit:: U.S. BUR. MINES RI 5238, 1956, P. 9.
Commodities (Major) - Chromium; (Trace) - PGE - Iridium, PGE - Platinum, PGE - Palladium, PGE - Ruthenium, PGE - Rhodium
Development Status: Past Producer
Deposit Model: 15: Podiform chromite (minor)
Host Rock Unit: Canyon Mtn Complex
Structure: Prominent Jointing Gives Rocks A Platy Character
Host Rock: Dunite
Tectonic Structure: Ochoco-Blue Mountains

Regions containing this locality

North America PlateTectonic Plate

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Standard Detailed Strunz Dana Chemical Elements

Commodity List

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


Mineral List


3 valid minerals.

Rock Types Recorded

Note: this is a very new system on mindat.org and data is currently VERY limited. Please bear with us while we work towards adding this information!

Select Rock List Type

Alphabetical List Tree Diagram

Detailed Mineral List:

Antigorite
Formula: Mg3(Si2O5)(OH)4
Reference: U.S. Geological Survey, 2005, Mineral Resources Data System: U.S. Geological Survey, Reston, Virginia.
Chromite
Formula: Fe2+Cr3+2O4
Reference: U.S. Geological Survey, 2005, Mineral Resources Data System: U.S. Geological Survey, Reston, Virginia.
Uvarovite
Formula: Ca3Cr2(SiO4)3
Reference: U.S. Geological Survey, 2005, Mineral Resources Data System: U.S. Geological Survey, Reston, Virginia.

List of minerals arranged by Strunz 10th Edition classification

Group 4 - Oxides and Hydroxides
Chromite4.BB.05Fe2+Cr3+2O4
Group 9 - Silicates
Antigorite9.ED.15Mg3(Si2O5)(OH)4
Uvarovite9.AD.25Ca3Cr2(SiO4)3

List of minerals arranged by Dana 8th Edition classification

Group 7 - MULTIPLE OXIDES
AB2X4
Chromite7.2.3.3Fe2+Cr3+2O4
Group 51 - NESOSILICATES Insular SiO4 Groups Only
Insular SiO4 Groups Only with cations in [6] and >[6] coordination
Uvarovite51.4.3b.3Ca3Cr2(SiO4)3
Group 71 - PHYLLOSILICATES Sheets of Six-Membered Rings
Sheets of 6-membered rings with 1:1 layers
Antigorite71.1.2a.1Mg3(Si2O5)(OH)4

List of minerals for each chemical element

HHydrogen
H AntigoriteMg3(Si2O5)(OH)4
OOxygen
O ChromiteFe2+Cr23+O4
O AntigoriteMg3(Si2O5)(OH)4
O UvaroviteCa3Cr2(SiO4)3
MgMagnesium
Mg AntigoriteMg3(Si2O5)(OH)4
SiSilicon
Si AntigoriteMg3(Si2O5)(OH)4
Si UvaroviteCa3Cr2(SiO4)3
CaCalcium
Ca UvaroviteCa3Cr2(SiO4)3
CrChromium
Cr ChromiteFe2+Cr23+O4
Cr UvaroviteCa3Cr2(SiO4)3
FeIron
Fe ChromiteFe2+Cr23+O4

Regional Geology

This geological map and associated information on rock units at or nearby to the coordinates given for this locality is based on relatively small scale geological maps provided by various national Geological Surveys. This does not necessarily represent the complete geology at this locality but it gives a background for the region in which it is found.

Click on geological units on the map for more information. Click here to view full-screen map on Macrostrat.org

Jurassic - Triassic
145 - 251.902 Ma



ID: 3190753
Mesozoic sedimentary and volcanic rocks

Age: Mesozoic (145 - 251.902 Ma)

Comments: Blue Mountains

Lithology: Mafic-intermediate volcanic rocks; breccia,limestone,chert,siltstone,conglomerate,sandstone,shale

Reference: Chorlton, L.B. Generalized geology of the world: bedrock domains and major faults in GIS format: a small-scale world geology map with an extended geological attribute database. doi: 10.4095/223767. Geological Survey of Canada, Open File 5529. [154]

Triassic - Permian
201.3 - 298.9 Ma



ID: 2865771
Ultramafic and mafic intrusive rocks and serpentinized equivalents

Age: Phanerozoic (201.3 - 298.9 Ma)

Stratigraphic Name: Canyon Mountain Complex

Description: Peridotite, pyroxenite, gabbro, and norite. Light-green, gray, and black serpentine, mostly derived from peridotite; commonly highly sheared; in places includes some metavolcanic rocks and metamorphosed inclusions of keratophyre and chert. Includes ultramafic and mafic phases of the ophiolitic Canyon Mountain Complex of Thayer (1963; 1977) and Brown and Thayer (1966), alpine mafic rocks of Wolff (1965), gabbro of Ashley (1967), and serpentinite-matrix melange of Brooks and others (1983) and Ferns and others (1983):

Comments: Not defined on the State map (OR001) in the northeastern Oregon, but mapped in Umatilla River Basin (OR291) as ultramafic rocks (Triassic and Permian?) Original map source: Miller, R.J., Raines, G.L., and Connors, K.A., 2002, Spatial digital database for the geologic map of Oregon: Geology compiled by G.W. Walker and N.S. MacLeod, USGS Open-File Report 03-67, scale 1:500,000.

Lithology: Major:{peridotite,pyroxenite,gabbro}, Minor:{norite,serpentinite,metavolcanic,chert}

Reference: Horton, J.D., C.A. San Juan, and D.B. Stoeser. The State Geologic Map Compilation (SGMC) geodatabase of the conterminous United States. doi: 10.3133/ds1052. U.S. Geological Survey Data Series 1052. [133]

Permian
251.902 - 298.9 Ma



ID: 1470509
Baker Terrane; Canyon Mountain Complex

Age: Phanerozoic (251.902 - 298.9 Ma)

Description: Harzburgite, w/ gabbro dikes; ultramafic rocks; ultramafic composition lithologies; gabbro/pyroxenite; very fine to coarse crystals

Lithology: Major:: {gabbro dikes, mineralogy: olivine clinopyroxene orthopyroxene}; Major:: {feldspathic harzburgite, zones: feldspar broad layerlike or isolated single lobate blobs}

Reference: R.L. Smith, W.P. Roe (compilers). Oregon Geologic Data Compilation, release 6. State of Oregon Department of Geology and Mineral Industries. [20]

Data and map coding provided by Macrostrat.org, used under Creative Commons Attribution 4.0 License

USGS MRDS Record:10033039
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