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Colorado No. 3 Claim, Sinbad District, Mesa Co., Colorado, USA

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Latitude & Longitude (WGS84): 38° 32' 28'' North , 109° 3' 2'' West
Latitude & Longitude (decimal): 38.54111,-109.05055
Köppen climate type:BSk : Cold semi-arid (steppe) climate

Commodities (Major) - Copper
Deposit Type: Vein
Development Status: Occurrence
Host Rock Unit: Wingate Sandstone
Structure: Paradox Basin Fold And Fault Belt, Sinbad Valley Anticline, Sinbad Valley Graben, La Sal Centers
Host Rock: Conglomerate, Shale
Tectonic Structure: Colorado Platform

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 and data is currently VERY limited. Please bear with us while we work towards adding this information!

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Alphabetical List Tree Diagram

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

Early Jurassic - Late Triassic
174.1 - 237 Ma

ID: 3185972
Mesozoic sedimentary rocks

Age: Mesozoic (174.1 - 237 Ma)

Lithology: Sandstone-conglomerate

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]

Early Jurassic - Late Triassic
174.1 - 237 Ma

ID: 2791644
Glen Canyon Group and Chinle Fm

Age: Mesozoic (174.1 - 237 Ma)

Stratigraphic Name: Glen Canyon Group; Chinle Formation

Description: In southwest, Glen Canyon Group consists of Navajo Sandstone, Kayenta Fm (red siltstone, shale, and sandstone) and Wingate Sandstone; Chinle is red siltstone

Lithology: Major:{sandstone,siltstone,shale}

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]

Early Permian
272.3 - 298.9 Ma

ID: 2178290
Cutler Formation

Age: Cisuralian (272.3 - 298.9 Ma)

Stratigraphic Name: Cutler Formation

Description: Interbedded red- brown subarkosic, arkosic, and micaceous sandstone and lavender- brown conglomerate; sandstone is fine to coarse grained and gritty in eastern exposures; low- to high-angle cross- beds, thin bedded to massive, and forms smooth and rounded ledges; conglomerate is mostly pebbles to 13- centimeter (5-inch) cobbles, but cobbles exceeding 30 centimeters (1 ft) or more in diameter are common in the eastern part of the quadrangle; mostly quartzite, granite, felsite, gneiss, and schist clasts; matrix is poorly sorted, fine- to coarse- grained sandstone, with grains of quartz, lithic fragments, mica, feldspar, and unidentified black minerals; laminated to indistinct bedding; weathers to smooth irregular slopes or gentle ledges; lower contact is placed above a gray limestone ledge that contains Late Pennsylvanian (Virgilian) fusulinids; 0 to 2,450 meters (0-8,000 ft) thick; missing over some salt-cored anticlines, thickest at the west edge of the Uncompahgre uplift; as much as 1,000 meters (3,300 ft) exposed; 75 meters (245 ft) of gray-white, cross-bedded quartzose sandstone at the top of the Cutler Formation in the north part of the southwest flank of Castle Valley may be an outcrop of White Rim Sandstone; Lower Permian.

Reference: Doelling, H.H. Geologic map of the Moab and eastern part of the San Rafael Desert 30x60 Quad. Utah Geological Survey. [30]

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

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