| Deposit ID | 10013130 |
|---|---|
| MRDS ID | D009242 |
| Record type | Site |
| Current site name | Marshall Pass No. 5 Mine |
| Related records | 10159742 |
| Point of reference | Ore Body |
|---|---|
| Geographic coordinates: | -106.28393, 38.40056 (WGS84) |
| Elevation | 3078 |
| Location accuracy | 10(meters) |
| Relative position | 7 MILES S 87 E FROM SARGENTS |
Political divisions (FIPS codes)
Saguache(county)
Colorado(state)
United States(country)
North America(continent)
Land(continent)
USGS map quadrangles
Pahlone Peak(quadrangle 1:24,000 scale)
Saguache(quadrangle 1:100,000 scale)
Montrose(quadrangle 1:250,000 scale)
Hydrologic units (watersheds)
Tomichi(hydrologic unit)
Gunnison(hydrologic accounting unit)
Gunnison(hydrologic subregion)
Upper Colorado(hydrologic region)
Federal lands
Grand Mesa, Uncompahgre and Gunnison National Forests(National Forest)
National Forest FS(Type of land area)
FS(Federal land areas administered by FS)
| Country | State | County |
|---|---|---|
| United States | Colorado | Saguache |
| Meridian | Township | Range | Section | Fraction | State |
|---|---|---|---|---|---|
| New Mexico | 048N | 006E | 22 | SE OF NE | Colorado |
| Commodity | Importance |
|---|---|
| Uranium | Primary |
| Vanadium Critical | Primary |
| Lead | Tertiary |
| Materials | Type of material |
|---|---|
| Galena | Ore |
| Pitchblende | Ore |
| Uranophane | Ore |
| Result | TWO SAMPLES ASSAYED 21.4 AND 30.0+% EQUIV. U308 |
|---|---|
| Result | RADIATION 20 MR/HR, BACKGROUND 0.07 MR/HR |
| Host or associated | Associated | ||
|---|---|---|---|
| Rock type | Plutonic Rock > Granitoid > Granite | ||
| Rock unit name | Pegmatite Granite | ||
| Rock description | Pegmatite Granite | ||
| |||
| Host or associated | Host | ||
|---|---|---|---|
| Rock type | Metamorphic Rock > Schist | ||
| |||
| Ore Body (1) | -106.28393, 38.40056 |
|---|
| Type of structure | Local |
|---|---|
| Structure name | small faults related to Chester Fault |
| Structure description | Chester Fault |
| Type of structure | Regional |
| Structure description | Sawatch Range, San Juan Volcanic Field |
| Development status | Past Producer |
|---|---|
| Commodity type | Metallic |
| Deposit size | Small |
| Significant | No |
| Discovery year | 1955 |
| District name | Marshall Pass District |
|---|
| Ownership category | National Forest |
|---|
| Type | Owner |
|---|---|
| Owner | Homestake Mining Co. |
| First year | 1955 |
| Year | 1956 | |||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Ore mined | 17.71mt | |||||||||||||||||||||
| Accuracy | Accurate | |||||||||||||||||||||
| ||||||||||||||||||||||
| Type of workings | Surface |
|---|---|
| Area | 0.001HA |
| Overall length | 3.05M |
| Overall width | 3.05M |
| Agency | Database name | Acronym | Record ID | Notes |
|---|---|---|---|---|
| USGS | Mineral Resources Data System | MRDS | D009242 | |
| U.S. Bureau of Mines | Minerals Availability System | MAS | 0081090019 |
WRIGHT, R.J., AND EVERHART, D.L., 1960, URANIUM--MARSHALL PASS DISTRICT, IN DEL RIO, S.M., MINERAL RESOURCES OF COLORADO--FIRST SEQUEL: COLORADO STATE MINERAL RESOURCES BOARD, P. 357-359.
GROSS, E.B., 1965, A UNIQUE OCCURRENCE OF URANIUM MINERALS, MARSHALL PASS, SAGUACHE COUNTY, COLORADO: AM. MINERALOGIST, V. 50, NOS. 7-8, P. 909-923.
RANSPOT, H.W., 1958, GEOLOGY AND URANIUM DEPOSITS OF THE INDIAN CREEK AREA, GUNNISON AND SAGUACHE COUNTIES, COLORADO: UNIV. COLORADO M.S. THESIS
| Subject category | Comment text |
|---|---|
| Deposit | URANIUM MINERALIZATION FOUND IN PRECAMBRIAN SCHIST INTRUDED BY PEGMATITIC GRANITE ALONG LOCAL BEDDING AND FOLIATION TREND OF APPROX. N40E. IF THIS SITE IS SIMILAR TO LOOKOUT NO. 22 PROSPECT TO SOUTH, URANIUM COULD BE LOCALIZED BY SMALL CHESTER FAULT OFFSHOOTS. HIGHER GRADE ORE WAS PRODUCED FROM REGOLITH OR COLLUVIUM OVERLYING BEDROCK. |
| Deposit | REMAINDER OF MARSHALL PASS BLOCK OF CLAIMS (1 THRU 58) LIE IN SE SEC. 11, ALL SEC. 14, E2 SEC. 15, E2 SEC. 22, W2 AND NE SEC. 23, NE SEC. 27, T48N, R6E ; INFO.SRC : 1 PUB LIT; 2 UNPUB REPT |
| Type | Date | Name | Affiliation | Comment |
|---|---|---|---|---|
| Reporter | 01-MAR-1982 | Schwochow, Stephen D. | Colorado Geological Survey |
Supplemental information added by qvyshift.com. Not part of the original USGS MRDS record.
MRDS records operators as of each record's last update (≤ 2019). Some of the operators listed here have since changed hands or dissolved:
Curated by qvyshift.com from publicly-reported M&A activity (SEC filings, press releases, USGS Mineral Yearbooks). Not authoritative — verify against primary sources before relying on it. The MSHA panel above is the current authoritative source for actively-permitted mines.
These are landing pages for further research — the state agencies don't currently expose per-mine deep links.