| Deposit ID | 10014876 |
|---|---|
| MRDS ID | D011948 |
| Record type | Site |
| Current site name | Alta-Helena Tunnel |
| Alternate or previous names | Alta Helena Group |
| Geographic coordinates: | -111.60939, 40.58772 (WGS84) |
|---|---|
| Elevation | 2911 |
| Relative position | 5300 FT S41W OF MT. MILLICENT |
Political divisions (FIPS codes)
Salt Lake(county)
Utah(state)
United States(country)
North America(continent)
Land(continent)
USGS map quadrangles
Brighton(quadrangle 1:24,000 scale)
Salt Lake City(quadrangle 1:100,000 scale)
Salt Lake City(quadrangle 1:250,000 scale)
Hydrologic units (watersheds)
Jordan(hydrologic unit)
Jordan(hydrologic accounting unit)
Great Salt Lake(hydrologic subregion)
Great Basin(hydrologic region)
Federal lands
Uinta-Wasatch-Cache National Forest(National Forest)
National Forest FS(Type of land area)
FS(Federal land areas administered by FS)
| Country | State | County |
|---|---|---|
| United States | Utah | Salt Lake |
| Meridian | Township | Range | Section | Fraction | State |
|---|---|---|---|---|---|
| Salt Lake | 003S | 003E | 04 | SE OF SW OF SE | Utah |
| Commodity | Importance |
|---|---|
| Copper | Primary |
| Iron | Tertiary |
| Materials | Type of material |
|---|---|
| Chalcopyrite | Ore |
| Malachite | Ore |
| Actinolite | Gangue |
| Calcite | Gangue |
| Chlorite | Gangue |
| Diopside | Gangue |
| Epidote | Gangue |
| Garnet | Gangue |
| Pyrite | Gangue |
| Quartz | Gangue |
| Magnetite | Unknown |
| Host or associated | Associated | ||
|---|---|---|---|
| Rock type | Plutonic Rock > Mafic Intrusive Rock > Diorite | ||
| Rock unit name | Alta Stock;Intermediate Dike | ||
| Rock description | Alta Stock;Intermediate Dike | ||
| |||
| Host or associated | Host |
|---|---|
| Rock type | Metamorphic Rock > Metasedimentary Rock > Quartzite |
| Rock unit name | Ophir Shale;Fitchville Formation |
| Rock description | Ophir Shale;Fitchville Formation |
| Host or associated | Host |
|---|---|
| Rock type | Metamorphic Rock > Phyllite |
| Host or associated | Host |
|---|---|
| Rock type | Metamorphic Rock > Schist |
| Host or associated | Host |
|---|---|
| Rock type | Sedimentary Rock > Clastic Sedimentary Rock > Shale |
| Host or associated | Host |
|---|---|
| Rock type | Sedimentary Rock > Carbonate > Limestone |
| Host or associated | Host |
|---|---|
| Rock type | Sedimentary Rock > Carbonate > Dolomite |
| (1) | -111.60939, 40.58772 |
|---|
| Type of structure | Regional |
|---|---|
| Structure description | Uinta-Cottonwood Arch, Cordilleran Hingeline. Sevier Overthrust Belt |
| Type of structure | Local |
| Structure description | East-Northeast Striking Faults |
| General form | IRREGULAR |
|---|
| Development status | Occurrence |
|---|---|
| Commodity type | Metallic |
| Deposit size | Small |
| Significant | No |
| District name | Little Cottonwood District |
|---|
| Ownership category | Private |
|---|
| Agency | Database name | Acronym | Record ID | Notes |
|---|---|---|---|---|
| USGS | Mineral Resources Data System | MRDS | D011948 |
BUTLER, B.S., LOUGHLIN, G.F., HEIKES, V.C., AND OTHERS, 1920, THE ORE DEPOSITS OF UTAH: U.S. GEOLOGICAL SURVEY PROF. PAPER, NO. 111.
BAKER, A.A. CALKINS, F.C., CRITTENDEN, M.D., JR., AND BROMFIELD, C.S., 1966, GEOLOGIC MAP OF THE BRIGHTON QUADRANGLE, UTAH: U.S. GEOLOGICAL SURVEY GEOL. QUAD. MAP GQ-534
| Subject category | Comment text |
|---|---|
| Deposit | NINE PITS, ADITS, AND SHAFTS COMPRISE THIS GROUP OF WORKINGS ALL PROSPECTS WERE DEVELOPED ON CU + FE SKARN MINERALIZATION. IN THESE DEPOSITS, MALACHITE, AZURITE, AND RARE CHALCOPYRITE OCCUR IN MAGNETITE RICH SKARN BODIES HOSTED BY LIMESTONE AND LYING ADJACENT TO THE ALTA STOCK |
| Type | Date | Name | Affiliation | Comment |
|---|---|---|---|---|
| Reporter | 01-MAY-1984 | Shubat, Michael A. | Utah Geological and Mineral Survey |
Supplemental information added by qvyshift.com. Not part of the original USGS MRDS record.