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Piedra Niegro Claim

Occurrence in Hinsdale county in Colorado, United States with commodity Manganese
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Sections on this page
  1. Identification information
  2. Geographic coordinates
  3. Site location context
  4. Geographic areas
  5. Public Land Survey System information
  6. Commodities
  7. Materials information
  8. Host and associated rocks
  9. Nearby scientific data
  10. Geologic structures
  11. Controls for ore emplacement
  12. Economic information about the deposit and operations
  13. Mining district
  14. Land status
  15. Ownership information
  16. Links to other databases
  17. Bibliographic references
  18. General comments
  19. Reporter information

Geologic information

Identification information

Deposit ID 10014697
MRDS ID D011584
MAS/MILS ID 0080530075
Record type Site
Current site name Piedra Niegro Claim
Alternate or previous names Piedra Niegro Mining Claim

Geographic coordinates

Geographic coordinates: -107.33535, 37.81668 (WGS84)
Elevation 3395
Location accuracy 1000(meters)
Relative position 14.7 MILES S 5 W FROM LAKE CITY

Site location context

Political divisions (FIPS codes)

Hinsdale(county)

Colorado(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Finger Mesa(quadrangle 1:24,000 scale)

Silverton(quadrangle 1:100,000 scale)

Durango(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Rio Grande Headwaters(hydrologic unit)

Rio Grande Headwaters(hydrologic accounting unit)

Rio Grande Headwaters(hydrologic subregion)

Rio Grande(hydrologic region)

Federal lands

Rio Grande National Forest(National Forest)

National Forest FS(Type of land area)

FS(Federal land areas administered by FS)

Geographic areas

Country State County
United States Colorado Hinsdale

Public Land Survey System information

Meridian Township Range Section Fraction State
New Mexico 041N 004W 17 NW Colorado

Comments on the location information

  • ABOVE (UNVERIFIED) LOCATION TAKEN FROM USBM MILS LISTING. PLOTTED LOCATION LIES AT HEAD OF NORTH CLEAR CREEK 3.2 MILES WSW OF PEARL LAKES AND NEAR DIVIDE BETWEEN NORTH CLEAR CREEK AND LOST TRAIL CREEK. ; INFO FROM LAND.ST :1977

Commodities

Commodity Importance
Manganese Critical Primary

Materials information

Materials Type of material
Psilomelane Ore

Host and associated rocks

  • Host or associated Associated
    Rock type Volcanic Rock (Aphanitic) > Felsic Volcanic Rock > Rhyodacite
    Stratigraphic age (youngest) Oligocene
    Stratigraphic age (youngest) Oligocene
  • Host or associated Associated
    Rock type Volcanic Rock (Aphanitic) > Felsic Volcanic Rock > Quartz Latite
    Rock unit name Fish Canyon Tuff;Early Intermediate-Composition Lavas And Related Rocks--Lava Flows
    Rock description Fish Canyon Tuff;Early Intermediate-Composition Lavas And Related Rocks--Lava Flows
  • Host or associated Associated
    Rock type Volcanic Rock (Aphanitic) > Intermediate Volcanic Rock > Andesite
  • Host or associated Host
    Rock type Volcanic Rock (Aphanitic) > Felsic Volcanic Rock > Quartz Latite

Nearby scientific data

(1) -107.33535, 37.81668
ListMap

Economic information

Geologic structures

Type of structure Regional
Structure description San Juan Volcanic Field
Type of structure Local
Structure description Lost Lake Caldera

Controls for ore emplacement

  • Fractures And Breccias In Volcanic Flow/Breccia Complex

Economic information about the deposit and operations

Operation type Underground
Development status Occurrence
Commodity type Metallic
Deposit size Small
Significant No

Mining district

District name Finger Mesa Area

Land status

Ownership category National Forest

Ownership information

  • Type Owner
    Owner J. J. And Jack Sylvester
    First year 1951

Reference information

Bibliographic references

  • Deposit

    LIPMAN, P.W., 1976, GEOLOGIC MAP OF THE LAKE CITY CALDERA AREA, WESTERN SAN JUAN MOUNTAINS, SOUTHWESTERN COLORADO: USGS MAP I-962.

  • Deposit

    MUILENBURG, G.A., 1919, MANGANESE DEPOSITS OF COLORADO: CGS BULL. 15, P. 42-45.

  • Deposit

    USBM MILS LISTING 0080530075

  • Deposit

    STEVEN, T.A., AND LIPMAN, P.W., 1976, CALDERAS OF THE SAN JUAN VOLCANIC FIELD, SOUTHWESTERN COLORADO: USGS PROF. PAPER 958, P. 8-10.

General comments

Subject category Comment text
Deposit BASED ON THIS UNVERIFIED LOCATION, DEPOSIT LIES IN FISH CANYON TUFF JUST BEYOND NW RIM OF LOST LAKE BURIED CALDERA. NATURE OF MN OCCURRENCE IS UNCERTAIN BUT COULD BE SIMILAR TO OTHERS IN VOLCANIC TERRAINS OF SOUTHERN RUNNISON COUNTY AND NORTHERN HINSDALE COUNTY. THERE, HARD, COMPACT, FINELY GRANULAR, HIGHLY SILICEOUS PSILOMELANE OCCURS AS BOTRYOIDAL MASSES IN POCKETS AND FREQUENTLY IN NETWORK OF SMALL VEINS UP TO FOUR INCHES WIDE, AND IN BRECCIA.

Reporter information

Type Date Name Affiliation Comment
Reporter 01-MAR-84 Schwochow, Stephen D. Colorado Geological Survey
Editor 26-JUL-11 Wilson, Anna B U.S. Geological Survey Merged and deleted duplicate record 10239066 (MAS 0080530075)
Reporter 17-NOV-83 Intermountain Field Operations Center (IFOC) U.S. Bureau of Mines MAS 0080530075 = newMRDS 10239066

Beyond USGS

Supplemental information added by qvyshift.com. Not part of the original USGS MRDS record.

Maps centered on this site

Authoritative Colorado resources

These are landing pages for further research — the state agencies don't currently expose per-mine deep links.