| Deposit ID | 10014383 |
|---|---|
| MRDS ID | D011129 |
| Record type | District |
| Current site name | Beaver Creek District |
| Alternate or previous names | Midland District, Patented Claims: Noah, MS 6907a, Golden Ark, MS 6907a, South Beaver Mill Site, MS 6907b, Gold Cord, MS 12592, Continental, MS 13410, Iron Clad, MS 13410, Minnehaha, MS 13410, King, MS 13410, Oro, MS 13410, Summit, MS 13410, Lone Star, MS 17163, Beaver, MS 17165, Pueblo, MS 18715, Mascot, MS 18894, Little Hope, MS 18894, Boston, MS 20538, Fairview, MS 20538 |
| Geographic coordinates: | -106.92368, 38.34222 (WGS84) |
|---|---|
| Elevation | 2746 |
| Relative position | 12.8 MILES S 4 W TO 13.8 MILES S 1 E FROM GUNNISON |
Political divisions (FIPS codes)
Saguache(county)
Colorado(state)
United States(country)
North America(continent)
Land(continent)
USGS map quadrangles
Spring Hill Creek(quadrangle 1:24,000 scale)
Saguache(quadrangle 1:100,000 scale)
Montrose(quadrangle 1:250,000 scale)
Hydrologic units (watersheds)
Upper Gunnison(hydrologic unit)
Gunnison(hydrologic accounting unit)
Gunnison(hydrologic subregion)
Upper Colorado(hydrologic region)
| Country | State | County |
|---|---|---|
| United States | Colorado | Saguache |
| Meridian | Township | Range | Section | Fraction | State |
|---|---|---|---|---|---|
| New Mexico | 047N | 001W | 02,11,12,13 | Colorado |
| Commodity | Importance |
|---|---|
| Gold | Primary |
| Silver | Primary |
| Zinc Critical | Tertiary |
| Lead | Tertiary |
| Materials | Type of material |
|---|---|
| Galena | Ore |
| Gold | Ore |
| Sphalerite | Ore |
| Magnetite | Gangue |
| Host or associated | Associated | ||||||
|---|---|---|---|---|---|---|---|
| Rock type | Plutonic Rock > Granitoid > Quartz Monzonite | ||||||
| |||||||
| Host or associated | Associated |
|---|---|
| Rock type | Plutonic Rock > Granitoid > Granite |
| Rock unit name | Leucogranite And Quartz Monzonite |
| Rock description | Leucogranite And Quartz Monzonite |
| Host or associated | Host |
|---|---|
| Rock type | Metamorphic Rock > Metasedimentary Rock > Quartzite |
| Host or associated | Host |
|---|---|
| Rock type | Metamorphic Rock > Schist |
| Rock unit name | Dubois Greenstone--Metabasalt, Meta-Andesite;Dubois Greenstone--Quartzite |
| Rock description | Dubois Greenstone--Metabasalt, Meta-Andesite;Dubois Greenstone--Quartzite |
| Host or associated | Host |
|---|---|
| Rock type | Metamorphic Rock > Amphibolite |
| Host or associated | Host |
|---|---|
| Rock type | Plutonic Rock > Granitoid > Granite |
| (1) | -106.92368, 38.34222 |
|---|
| Type of structure | Regional |
|---|---|
| Structure description | Gunnison Uplift, San Juan Volcanic Field |
| Type of structure | Local |
| Structure description | Gunnison Gold Belt, Iron Hill Alkalic Complex |
| Development status | Past Producer |
|---|---|
| Commodity type | Metallic |
| Deposit size | Small |
| Significant | No |
| Year of last production | 1932 |
| District name | Beaver Creek (Midland) District |
|---|
| Ownership category | Private |
|---|
| Type | Operator |
|---|---|
| Owner | Owen O'Fallon, C.E. Lyman, And B.M. Lyman Continental Mine) |
| Home office | Gunnison, Co. |
| First year | 1932 |
| Type | Owner |
|---|---|
| Owner | Patrick O'Fallon Continental Mine) |
| Home office | Gunnison, Co. |
| First year | 1932 |
| Agency | Database name | Acronym | Record ID | Notes |
|---|---|---|---|---|
| USGS | Mineral Resources Data System | MRDS | D011129 |
OLSON, J.C., AND OTHERS, 1975, GEOLOGIC MAP OF THE SPRING HILL CREEK QUADRANGLE, SAGUACHE COUNTY, COLORADO: USGS MAP MF-713.
HEDLUND, D.C., AND OLSON, J.C., 1975, GEOLOGIC MAP OF THE POWDERHORN QUADRANGLE, GUNNISON AND SAGUACHE COUNTIES, COLORADO: USGS MAP GQ-1178.
COLORADO DIV. MINES INSP. REPTS.
BLM MINERAL SURVEYS MS 6907A&B, 12592, 13410, 17163, 17165, 18715, 18894, 20538
| Subject category | Comment text |
|---|---|
| Deposit | COUNTRY ROCK CONSISTS OF SCHIST AND AMPHIBOLITE OF DUBOIS GREENSTONE REPRESENTING METAMORPHOSED BASALT AND ANDESITE FLOWS AND WHOSE FOLIATION TRENDS GENERALLY N 40 TO 60 W, 60 TO 85 SW. MAGNETITE-BEARING QUARTZITE (METACHERT) LAYERS ARE INTERCALATED ALONG FOLIATION IN METAVOLCANICS. LARGE LAYER OF LEUCOGRANITE ALSO INTRUDED ALONG GENERAL TREND OF FOLIATION IN SCHIST. WITH NEW INTERPRETATION OF GUNNISON GOLD BELT DEPOSITS, THAT AT MIDLAND MINE REPORTED TO BE AU, POSSIBLY AURIFEROUS PYRITE OR AURIFEROUS CHERT, ASSOCIATED WITH MAGNETITE-BEARING QUARTZITE OR METACHERT LAYER WITH TRACE OCCURRENCES OF BASE METALS (SHERIDAN AND OTHERS, 1981, P. 275). WHETHER OR NOT BASE METALS REPRESENT MASSIVE SULFIDE OCCURRENCE CHARACTERISTIC OF GOLD BELT IS UNKNOWN AS NO OTHER DESCRIPTIONS OF DISTRICT WERE FOUND. DEPOSIT AT CONTINENTAL MINE IS UNCERTAIN BUT WAS ORIGINALLY DESCRIBED AS VEIN, POSSIBLY RELATED TO EMPLACEMENT OF GRANITE LAYER. |
| Deposit | BLM CLAIM RECORDS ASSIGN DISTRICT NAMES OF BOTH "BEAVER CREEK" AND "MIDLAND" TO CLAIMS AT AND NEAR MIDLAND AND CONTINENTAL MINES. FOR CONSISTENCY, DISTRICT IS ASSIGNED PREFERRED NAME OF "BEAVER CREEK." INDIVIDUAL RECORDS PREPARED FOR ONLY TWO KNOWN DEVELOPED PROPERTIES: MIDLAND MINE AND CONTINENTAL MINE. ; INFO.SRC : 1 PUB LIT; 2 UNPUB REPT |
| Type | Date | Name | Affiliation | Comment |
|---|---|---|---|---|
| Reporter | 01-JAN-84 | Schwochow, Stephen D. | Colorado Geological Survey | |
| Editor | 16-NOV-11 | Wilson, Anna B | U.S. Geological Survey | Changed record type from site to district. |
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.