Last Chance Placer (Last Chance No. 3), Grayback Mining District (Russell Mining District), Costilla County, Colorado, USAi
| Regional Level Types | |
|---|---|
| Last Chance Placer (Last Chance No. 3) | Placer |
| Grayback Mining District (Russell Mining District) | Mining District |
| Costilla County | County |
| Colorado | State |
| USA | Country |
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Latitude & Longitude (WGS84):
37° 36' 58'' North , 105° 16' 26'' West
Latitude & Longitude (decimal):
Type:
Köppen climate type:
Nearest Settlements:
| Place | Population | Distance |
|---|---|---|
| Fort Garland | 433 (2011) | 25.1km |
| La Veta | 759 (2017) | 26.5km |
| Blanca | 370 (2017) | 29.1km |
| Walsenburg | 2,898 (2017) | 43.5km |
| Rye | 156 (2017) | 45.6km |
Mindat Locality ID:
112067
Long-form identifier:
mindat:1:2:112067:0
GUID (UUID V4):
d671d47d-77bd-437c-a66c-fe1d9aeb98dc
REF:Deposit:: PATTON, H.B., AND OTHERS, 1910, GEOLOGY OF THE GRAYBACK MINING DISTRICT, COSTILLA COUNTY, COLORADO: CGS BULL. 2.
Deposit:: PARKER, B.H., JR., 1974, GOLD PLACERS OF COLORADO: CSM QUART., V. 69, NO. 4, P. 124-134.
Commodities (Major) - Gold; (Trace) - Tellurium
Deposit Type: Placer
Development Status: Past Producer
Host Rock Unit: Basic To Silicic Lava Flows, Flow Breccias, And Tuffs, Granodiorite Gneiss
Structure: Sierra Blanca Massif, Ft. Garland Embayment
Host Rock: Sand And Gravel
Tectonic Structure: Central Cordillera (Southern Rocky Mtns)
Select Mineral List Type
Standard Detailed Gallery Strunz Chemical ElementsCommodity List
This is a list of exploitable or exploited mineral commodities recorded at this locality.Mineral List
2 valid minerals.
Rock Types Recorded
Note: data is currently VERY limited. Please bear with us while we work towards adding this information!
Select Rock List Type
Alphabetical List Tree DiagramDetailed Mineral List:
| ⓘ Calaverite Formula: AuTe2 |
| ⓘ Gold Formula: Au |
Gallery:
List of minerals arranged by Strunz 10th Edition classification
| Group 1 - Elements | |||
|---|---|---|---|
| ⓘ | Gold | 1.AA.05 | Au |
| Group 2 - Sulphides and Sulfosalts | |||
| ⓘ | Calaverite | 2.EA.10 | AuTe2 |
List of minerals for each chemical element
| Te | Tellurium | |
|---|---|---|
| Te | ⓘ Calaverite | AuTe2 |
| Au | Gold | |
| Au | ⓘ Calaverite | AuTe2 |
| Au | ⓘ Gold | Au |
Other Regions, Features and Areas containing this locality
North America
- Rocky MountainsMountain Range
North America PlateTectonic Plate
- Great Plains DomainDomain
USA
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