| Deposit ID | 10008989 |
|---|---|
| MRDS ID | D001593 |
| Record type | Site |
| Current site name | Helena District |
| Geographic coordinates: | -112.08421, 46.55823 (WGS84) |
|---|---|
| Relative position | THE HELENA DISTRICT IS AN AREA EXTENDING FROM THE CITY S AND SW. IT EXTENDS TO CLANCY-LUMP GULCH AND RIMINI DISTRICTS. IT INCLUDES COLORADO, NELSON, GRIZZLY, ORO FINO AND DRY GULCHES. |
Political divisions (FIPS codes)
Lewis and Clark(county)
Montana(state)
United States(country)
North America(continent)
Land(continent)
USGS map quadrangles
Helena(quadrangle 1:24,000 scale)
Elliston(quadrangle 1:100,000 scale)
Butte(quadrangle 1:250,000 scale)
Hydrologic units (watersheds)
Upper Missouri(hydrologic unit)
Upper Missouri(hydrologic accounting unit)
Missouri-Marias(hydrologic subregion)
Missouri(hydrologic region)
Federal lands
Helena-Lewis and Clark National Forest(National Forest)
National Forest FS(Type of land area)
FS(Federal land areas administered by FS)
| Country | State | County |
|---|---|---|
| United States | Montana | Lewis and Clark |
| Meridian | Township | Range | Section | Fraction | State |
|---|---|---|---|---|---|
| Montana Principal | 009N;009N;009N;010N;010N;010N | 003W;004W;005W;003W;004W;005W | 05,06,07,08,17,18,19,20;01,02,03,04,05,06,07,08,09,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24;01,02,12,13,24;19,30,31,32;25,301,02,036;25,34,35,36 | Montana |
| Commodity | Importance |
|---|---|
| Gold | Primary |
| Silver | Primary |
| Copper | Secondary |
| Lead | Secondary |
| Zinc Critical | Secondary |
| Stone | Secondary |
| Tungsten Critical | Tertiary |
| Arsenic Critical | Tertiary |
| Marble, Dimension | Tertiary |
| Dolomite | Tertiary |
| Materials | Type of material |
|---|---|
| Chalcopyrite | Ore |
| Galena | Ore |
| Gold | Ore |
| Limestone | Ore |
| Calcite | Gangue |
| Pyrite | Gangue |
| Quartz | Gangue |
| Host or associated | Associated | ||||||
|---|---|---|---|---|---|---|---|
| Rock type | Plutonic Rock > Granitoid > Quartz Monzonite | ||||||
| Rock unit name | Butte Quartz Monzonite (Boulder Batholith);Elkhorn Mountain Volcanics | ||||||
| Rock description | Butte Quartz Monzonite (Boulder Batholith);Elkhorn Mountain Volcanics | ||||||
| |||||||
| Host or associated | Host |
|---|---|
| Rock type | Plutonic Rock > Granitoid > Quartz Monzonite |
| Host or associated | Host |
|---|---|
| Rock type | Sedimentary Rock > Carbonate > Limestone |
| Rock unit name | Madison Group |
| Rock description | Madison Group |
| Host or associated | Host |
|---|---|
| Rock type | Volcanic Rock (Aphanitic) > Intermediate Volcanic Rock > Andesite |
| (1) | -112.08421, 46.55823 |
|---|
| Type of structure | Regional |
|---|---|
| Structure description | Boulder Batholith |
| Development status | Past Producer |
|---|---|
| Commodity type | Both |
| Deposit size | Large |
| Significant | No |
| Discovery year | 1864 |
| District name | Helena District |
|---|
| Agency | Database name | Acronym | Record ID | Notes |
|---|---|---|---|---|
| USGS | Mineral Resources Data System | MRDS | D001593 |
MBMG BULL 16, P. 7.
USGS BULL 842, P. 202-09.
USBM R1 6334, P. 25-6.
USGS BULL 527, P. 85-7.
USGS PP 610, P. 155.
MBMG MEM 26, P. 43.
USGS-USBM YEARBOOKS
MBMG BULL 94.
USGS PP 610, P. 155; USGS-USBM YEARBOOKS. MBMG BULL 94.
| Subject category | Comment text |
|---|---|
| Deposit | THE ORE DEPOSITS ARE MAINLEY NEAR THE CONTACT OF THE BATHOLITH WITH THE SEDIMENTARY ROCKS. SOME ARE IN THE GRANITIC ROCKS AND OTHERS ARE IN THE ADJACENT HORNFELS OR TACTITE. |
| Type | Date | Name | Affiliation | Comment |
|---|---|---|---|---|
| Reporter | 01-NOV-1974 | Fisher, Fred S. | U.S. Geological Survey | |
| Updater | 01-DEC-1982 | Wise, Kristine K. (Elliott, James E.) | U.S. Geological Survey |
Supplemental information added by qvyshift.com. Not part of the original USGS MRDS record.