Nebraska Shaft

Custer County, Colorado, United States

Silver Iron

Land & claims · BLM · live

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BLM MLRS ↗Claims at this point ↗Surface mgmt ↗

Surface manager + active mining claims at this point, live from BLM. The "open to location" notes are a general 1872-Mining-Law guide, not BLM output — decision-support only; verify with BLM MLRS and on the ground before staking or entry.

Commodities

PrimarySilver

TertiaryIron

Commodity typeMetallic

Deposit

Deposit typeVein

Model82: Epithermal veins

Deposit sizeSmall

Ore controlTrachyte Contact Nearby

Materials

Ore mineralsArgentite, Pyrite

GangueBarite

Geology

Host rockRhyolite,Trachyte,Andesite

Associated rockRhyolite · Rosita Andesite;Game Ridge Trachyte

StructureRosita Volcanic Center, Wet Mtns, Twenty-Six Fault Runs East-West

Tectonic settingCentral Cordillera (Southern Rocky Mtns)

AlterationNo Significant Alteration

Economic & production

Development statusPast Producer

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References

CROSS, WHITMAN, 1896, GEOLOGY OF SILVER CLIFF AND THE ROSITA HILLS, COLORADO: USGS 17TH ANN. REPORT, PT 2, P. 263-403.SHARP, W.M., 1978, GEOLOGIC MAP OF THE SILVER CLIFF AND ROSITA VOLCANIC CENTERS, CUSTER COUNTY, COLORADO: USGS MAP I-1081.

Identification

Deposit ID10101719

MRDS IDD007853

RegionNA

Data scoreB

Coordinates38.11195, -105.33474