| Deposit ID | 10101876 |
|---|---|
| MRDS ID | D010866 |
| Record type | District |
| Current site name | Cascade District |
| Alternate or previous names | Patented Claims: Bank, MS 1778, Castle Rock Srpings, MS 1778, Sarah G., MS 20762 |
| Geographic coordinates: | -107.7762, 37.59751 (WGS84) |
|---|---|
| Elevation | 2341 |
| Relative position | 14 TO 16.5 MILES S 17 TO 32 W FROM SILVERTON |
Political divisions (FIPS codes)
La Plata(county)
Colorado(state)
United States(country)
North America(continent)
Land(continent)
USGS map quadrangles
Electra Lake(quadrangle 1:24,000 scale)
Silverton(quadrangle 1:100,000 scale)
Durango(quadrangle 1:250,000 scale)
Hydrologic units (watersheds)
Animas(hydrologic unit)
Upper San Juan(hydrologic accounting unit)
San Juan(hydrologic subregion)
Upper Colorado(hydrologic region)
Federal lands
San Juan National Forest(National Forest)
National Forest FS(Type of land area)
FS(Federal land areas administered by FS)
| Country | State | County |
|---|---|---|
| United States | Colorado | La Plata |
| Meridian | Township | Range | Section | Fraction | State |
|---|---|---|---|---|---|
| New Mexico | 038N;039N;039N | 008W;008W;009W | 05,06;24,25,35,36 | Colorado |
| Commodity | Importance |
|---|---|
| Silver | Primary |
| Copper | Tertiary |
| Lead | Tertiary |
| Zinc Critical | Tertiary |
| Gold | Tertiary |
| Materials | Type of material |
|---|---|
| Chalcopyrite | Ore |
| Galena | Ore |
| Pyrite | Ore |
| Sphalerite | Ore |
| Calcite | Gangue |
| Hematite | Gangue |
| Limonite | Gangue |
| Quartz | Gangue |
| Result | VEIN AND ORE SAMPLES TESTED BY SCOTT (1983) SHOW VALUES MAINLY IN AG (GENERALLY 0.2 TO 4 OZ/TON WITH HIGHS OF 8, 10, AND 28 OZ/TON) AND CU(UP TO 0.2%), WITH SECONDARY VALUES IN PB (UP TO 0.39%) AND ZN (UP TO 0.76%), MINOR AU (0.006 TO 0.31 OZ/TON |
|---|
| Model code | 85 |
|---|---|
| USGS model code | 22c |
| Deposit model name | Polymetallic veins |
| Mark3 model number | 46 |
| Host or associated | Associated | ||
|---|---|---|---|
| Rock type | Plutonic Rock > Granitoid > Monzonite | ||
| |||
| Host or associated | Associated |
|---|---|
| Rock type | Plutonic Rock > Mafic Intrusive Rock > Gabbro |
| Rock unit name | Electra Lake Gabbro;Monzonite Porphyry And Quartz Trachyte |
| Rock description | Electra Lake Gabbro;Monzonite Porphyry And Quartz Trachyte |
| Host or associated | Associated |
|---|---|
| Rock type | Volcanic Rock (Aphanitic) > Felsic Volcanic Rock > Trachyte |
| Host or associated | Host |
|---|---|
| Rock type | Metamorphic Rock > Gneiss |
| Rock unit name | Twilight Gneiss;Ouray And Leadville Limestones |
| Rock description | Twilight Gneiss;Ouray And Leadville Limestones |
| Host or associated | Host |
|---|---|
| Rock type | Sedimentary Rock > Carbonate > Limestone |
| (1) | -107.7762, 37.59751 |
|---|
| Type of structure | Regional |
|---|---|
| Structure description | San Juan Uplift |
| Type of structure | Local |
| Structure description | Needle Mtns Uplift, Unnamed Faults |
| Development status | Past Producer |
|---|---|
| Commodity type | Metallic |
| Deposit size | Small |
| Significant | No |
| Discovery year | 1883 |
| Year of last production | 1925 |
| District name | Cascade District |
|---|
| Ownership category | Private |
|---|---|
| Area name | San Juan N. F. |
| Type | Operator |
|---|---|
| Owner | Bailey And Fife (Sarah G. Claim - |
| Home office | Grants, N.M. |
| Last year | 1970 |
| Type | Owner |
|---|---|
| Owner | Thomas Fife (Sarah G. Claim - |
| Home office | Grants, N.M. |
| Last year | 1970 |
| Agency | Database name | Acronym | Record ID | Notes |
|---|---|---|---|---|
| USGS | Mineral Resources Data System | MRDS | D010866 |
SCOTT, D.C., 1983, MINERAL INVESTIGATION OF THE WEST NEEDLE WILDERNESS STUDY AREA AND THE BLM WEST NEEDLE CONTIGUOUS WILDERNESS STUDY AREA, LA PLATA AND SAN JUAN COUNTIES, COLORADO: USBM MLA 35-83.
CROSS, WHITMAN, AND HOLE, A.D., 1910, DESCRIPTION OF THE ENGINEER MOUNTAIN QUADRANGLE: USGS FOLIO 171.
BURCHARD, H.C., 1884, COLORADO--LA PLATA COUNTY, IN REPORT OF THE DIRECTOR OF THE MINT, UPON THE PRODUCTION OF PRECIOUS METALS IN THE UNITED STATES DURING THE CALENDAR YEAR 1883: GPO, P. 368-376.
BLM MINERAL SURVEYS MS 1778, 1779, 20762.
STEVEN, T.A., AND OTHERS, 1974, GEOLOGIC MAP OF THE DURANGO QUADRANGLE, SOUTHWESTERN COLORADO: USGS MAP I-764.
COLORADO DIV. MINES INF. REPT.
| Subject category | Comment text |
|---|---|
| Deposit | QUARTZ OR QUARTZ-PYRITE VEINS ASSOCIATED WITH GENERALLY EAST-WEST-OR NW-SE-TRENDING FAULTS AND FRACTURES CUT PRECAMBRIAN TWILIGHT GNEISS AND DEVONIAN-MISSISSIPPIAN LIMESTONES ON WEST AND SW FLANKS OF WEST NEEDLE MTNS OR NEEDLE MTNS UPLIFT. STRUCTRUES CUT ACROSS GENERALLY NE TRENDS OF GNEISSIC FOLIATION AND WEST TO WNW DIPS OF OVERLYING CARBONATES.FAULT ZONES AND FRACTURES COULD BE EXTENSIONS OF STRUCTURES WESTWARD FROM NEEDLE MOUNTAINS DISTRICT OR SE FROM RICO MTNS AREA. ACCORDINGLY, MINERALIZATION COULD BE ASSOCIATED WITH TERTIARY INTRUSIVES IN EACH DISTRICT. SINCE MINERALIZED STRUCTURES CUT BOTH PRECAMBRIAN AND LOWER PALEOZOIC ROCKS, AGE OF MINERALIZATION PROBABLY TERTIARY RATHER THAN PRECAMBRIAN. |
| Deposit | DISTRICT APPARENTLY COVERED BY ONLY SEVERAL PATENTED AND UNPATENTED CLAIMS. INDIVIDUAL RECORDS PREPARED FOR THREE PROBABLE PRODUCTIVE PROPERTIES (SARAH G. CLAIM, BITTEROOT MINE, SILVER STAR EXTENSION MINE) AND FOR FOUR OTHER DESCRIBED PROPERTIES THAT SHOWED SIGNIFICANT METAL VALUES (BANK CLAIM, CASTLE ROCK SPRINGS CLAIM, TWO UNNAMED PROSPECTS. ; INFO.SRC : 1 PUB LIT; 2 UNPUB REPT |
| Type | Date | Name | Affiliation | Comment |
|---|---|---|---|---|
| Reporter | 01-AUG-83 | 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.
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