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George Len Lode Occurrence, Grant Co., Oregon, USAi
Regional Level Types
George Len Lode OccurrenceOccurrence
Grant Co.County
OregonState
USACountry

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Key
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Latitude & Longitude (WGS84):
44° 9' 10'' North , 118° 52' 39'' West
Latitude & Longitude (decimal):
Locality type:
Nearest Settlements:
PlacePopulationDistance
Seneca193 (2017)7.8km
Canyon City672 (2017)26.9km
John Day1,680 (2017)29.9km
Mount Vernon506 (2017)34.9km
Prairie City880 (2017)37.0km


REF:Deposit:: ALLEN, J. E., 1938 , CHROMITE DEPOSITS IN OREGON, ODGMI, BULL. 9 , P. 60 .
Deposit:: OREGON METAL MINES HANDBOOK, 1941 , ODGMI, BULL 14 - B, P. 21 - 22 .
Deposit:: WESTGATE, L. G., 1920 , DEPOSITS OF CHROMITE IN EASTERN OREGON, U.S.G.S. BULLETIN 725-A, 1920, P. 47.
Commodities (Major) - Chromium
Deposit Type: Podiform
Development Status: Occurrence
Host Rock: Dunite

Regions containing this locality

North America PlateTectonic Plate

Select Mineral List Type

Standard Detailed Strunz Dana Chemical Elements

Commodity List

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


Mineral List


4 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.
Calcite
Formula: CaCO3
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 5 - Nitrates and Carbonates
Calcite5.AB.05CaCO3
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 14 - ANHYDROUS NORMAL CARBONATES
A(XO3)
Calcite14.1.1.1CaCO3
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
CCarbon
C CalciteCaCO3
OOxygen
O ChromiteFe2+Cr23+O4
O UvaroviteCa3Cr2(SiO4)3
O AntigoriteMg3(Si2O5)(OH)4
O CalciteCaCO3
MgMagnesium
Mg AntigoriteMg3(Si2O5)(OH)4
SiSilicon
Si UvaroviteCa3Cr2(SiO4)3
Si AntigoriteMg3(Si2O5)(OH)4
CaCalcium
Ca UvaroviteCa3Cr2(SiO4)3
Ca CalciteCaCO3
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

Holocene
0 - 0.0117 Ma



ID: 2726127
Alluvial deposits

Age: Anthropocene (0 - 0.0117 Ma)

Description: Sand, gravel, and silt forming flood plains and filling channels of present streams. In places includes talus and slope wash. Locally includes soils containing abundant organic material, and thin peat beds

Comments: Includes silt and fine sand deposited on broad benches adjacent to the Snake and Malheur Rivers by the Bonneville Flood (OR143; OR144; OR145; OR146) 14,000 years ago (late Pleistocene). In OR291, includes lacustrine silt, clay, and diatomite. 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:{sand,gravel,silt}, Minor:{peat}

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]

Quaternary
0 - 2.588 Ma



ID: 1451103
Quaternary surficial deposits; Alluvial deposits

Age: Pleistocene (0 - 2.588 Ma)

Description: Alluvium; unconsolidated rocks; mixed grained sediments; fluvial; silt to gravel grains

Lithology: Major:: {mixed fluvial sediment, mineralization: gold}

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

Neogene
2.588 - 23.03 Ma



ID: 3186305
Cenozoic volcanic rocks

Age: Neogene (2.588 - 23.03 Ma)

Stratigraphic Name: Columbia River Basalt

Comments: Columbia Plateau

Lithology: Flood basalt(s); mafic volcanic rocks; basalt

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]

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

USGS MRDS Record:10033045
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