| Deposit ID | 10013754 |
|---|---|
| MRDS ID | D010216 |
| Record type | Site |
| Current site name | Jefferson County Iron Mines |
| Geographic coordinates: | -105.2128, 39.63582 (WGS84) |
|---|---|
| Elevation | 2164 |
| Location accuracy | 1000(meters) |
| Relative position | 1.9 MILES S 32 W FROM MORRISON |
Political divisions (FIPS codes)
Jefferson(county)
Colorado(state)
United States(country)
North America(continent)
Land(continent)
USGS map quadrangles
Morrison(quadrangle 1:24,000 scale)
Denver West(quadrangle 1:100,000 scale)
Denver(quadrangle 1:250,000 scale)
Hydrologic units (watersheds)
Upper South Platte(hydrologic unit)
South Platte(hydrologic accounting unit)
South Platte(hydrologic subregion)
Missouri(hydrologic region)
| Country | State | County |
|---|---|---|
| United States | Colorado | Jefferson |
| Meridian | Township | Range | Section | Fraction | State |
|---|---|---|---|---|---|
| 6th Principal | 005S | 070W | 10 | Colorado |
| Commodity | Importance |
|---|---|
| Iron | Primary |
| Materials | Type of material |
|---|---|
| Magnetite | Ore |
| Result | HIGHER GRADE SAMPLE CONTAINED 20.56% FE AND 0.069% |
|---|
| Host or associated | Host | ||||
|---|---|---|---|---|---|
| Rock type | Metamorphic Rock > Schist | ||||
| Rock unit name | Idaho Springs Formation | ||||
| Rock description | Idaho Springs Formation | ||||
| |||||
| Host or associated | Host |
|---|---|
| Rock type | Metamorphic Rock > Amphibolite |
| (1) | -105.2128, 39.63582 |
|---|
| Type of structure | Regional |
|---|---|
| Structure description | Front Range Uplift |
| Type of structure | Local |
| Structure description | Bear Creek Shear Zone |
| Development status | Occurrence |
|---|---|
| Commodity type | Metallic |
| Deposit size | Small |
| Significant | No |
| Discovery year | 1880 |
| District name | Morrison Area |
|---|
| Ownership category | Private |
|---|
| Agency | Database name | Acronym | Record ID | Notes |
|---|---|---|---|---|
| USGS | Mineral Resources Data System | MRDS | D010216 |
HARRER, C.M., AND TESCH, W.J., JR., 1959, RECONNAISSANCE OF IRON OCCURRENCES IN COLORADO: USBM IC 7918, P. 45.
SCOTT, G.R., 1972, GEOLOGIC MAP OF THE MORRISON QUADRANGLE, JEFFERSON COUNTY, COLORADO: USGS MAP I-790-A
GABLE, D.J., 1968, GEOLOGY OF THE CRYSTALLINE ROCKS IN THE WESTERN PART OF THE MORRISON QUADRANGLE, JEFFERSON COUNTY, COLORADO: USGS BULL. 1251-E.
| Subject category | Comment text |
|---|---|
| Deposit | HARRER AND TESCH DESCRIBE DEPOSIT AS OCCURRING IN PEGMATITIC AMPHIBOLE SCHIST. GABLE'S MAP AND ROCK-UNIT DESCRIPTIONS SUGGEST THAT FE COULD OCCUR IN ONE OF SEVERAL UNITS AS ACCESSORY MINERAL: MICROCLINE-QUARTZ-PLAGIOCLASE-BIOTITE GNEISS, PEGMATITE, OR CORDIERITE-BEARING BIOTITE GNEISS. |
| Type | Date | Name | Affiliation | Comment |
|---|---|---|---|---|
| Reporter | 01-FEB-1983 | Schwochow, Stephen D. | Colorado Geological Survey |
Supplemental information added by qvyshift.com. Not part of the original USGS MRDS record.
These are landing pages for further research — the state agencies don't currently expose per-mine deep links.