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  3. Mineral Resource Data System (MRDS)

Pass Me By Mine

Occurrence in Conejos county in Colorado, United States with commodity Gold
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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. Mineral occurrence model information
  9. Host and associated rocks
  10. Nearby scientific data
  11. Geologic structures
  12. Controls for ore emplacement
  13. Economic information about the deposit and operations
  14. Mining district
  15. Land status
  16. Ownership information
  17. Links to other databases
  18. Bibliographic references
  19. General comments
  20. Reporter information

Geologic information

Identification information

Deposit ID 10014028
MRDS ID D010640
Record type Site
Current site name Pass Me By Mine
Alternate or previous names Patented Claims: Pass Me By, MS 15371, Arla, MS 15371, Vivian, MS 15371, Agnes, MS 15371, Youel, MS 15371, Edna, MS 15371, Starlight, MS 15371, Daylight, MS 15371, Cleora, MS 15371, Upper Ten, MS 15371, Homestake, MS 15371
Related records 10239483

Geographic coordinates

Geographic coordinates: -106.60254, 37.38752 (WGS84)
Elevation 3371
Relative position 3 MILES S 8 W FROM SUMMITVILLE

Site location context

Political divisions (FIPS codes)

Conejos(county)

Colorado(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Summitville(quadrangle 1:24,000 scale)

Antonito(quadrangle 1:100,000 scale)

Durango(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Alamosa-Trinchera(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 Conejos

Public Land Survey System information

Meridian Township Range Section Fraction State
New Mexico 036N;036N 003E;004E 01;06,07 Colorado

Comments on the location information

  • ON WEST SLOPE OF LOOKOUT MTN ABOVE IRON CREEK, 0.6 MILE SW OF LOOKOUT MTN. ; INFO FROM LAND.ST :1975

Commodities

Commodity Importance
Gold Primary

Materials information

Materials Type of material
Alunite Gangue
Quartz Gangue

Mineral occurrence model information

Model code 85
USGS model code 22c
Deposit model name Polymetallic veins
Mark3 model number 46

Host and associated rocks

  • Host or associated Associated
    Rock type Volcanic Rock (Aphanitic) > Felsic Volcanic Rock > Rhyolite
    Stratigraphic age (youngest) Miocene
    Stratigraphic age (youngest) Oligocene
    Stratigraphic age (youngest) Oligocene
  • Host or associated Associated
    Rock type Volcanic Rock (Aphanitic) > Felsic Volcanic Rock > Quartz Latite
  • Host or associated Associated
    Rock type Volcanic Rock (Aphanitic) > Intermediate Volcanic Rock > Andesite
    Rock unit name Rhyolite Of Cropsy Mountain;Intrusive Rocks--Quartz Latite Porphyry
    Rock description Rhyolite Of Cropsy Mountain;Intrusive Rocks--Quartz Latite Porphyry
  • Host or associated Host
    Rock type Volcanic Rock (Aphanitic) > Intermediate Volcanic Rock > Andesite
    Rock unit name Summitville Andesite
    Rock description Summitville Andesite

Nearby scientific data

(1) -106.60254, 37.38752
ListMap

Economic information

Geologic structures

Type of structure Regional
Structure description San Juan Volcanic Field
Type of structure Local
Structure description Platoro Caldera, Summitville Caldera, Alamosa River Stock, Summitville Fault, Lookout Mtn Vent-Dome

Controls for ore emplacement

  • Lookout Mtn Vent-Dome

Economic information about the deposit and operations

Development status Occurrence
Commodity type Metallic
Deposit size Small
Significant No
Discovery year 1897

Mining district

District name Decatur West (Stunner) District

Land status

Ownership category Private

Ownership information

  • Type Owner-Operator
    Owner Pass Me By Tunnel, Mining, And Milling Co.
    First year 1915

Comments on the workings information

  • TUNNEL DRIVEN N 85 W FOR 2500 FT, THENCE 1100 FT AT N 50 W, AS REPORTED BY PATTON (1917) AND CALKIN (1967), BUT GOW AND YANG (1914) REPORT TUNNEL HEADING N 50 E AFTER BEND.

Comments on development

  • AU DISCOVERED IN ARLA VEIN IN 1897, TUNNEL STARTED 600 FT BELOW APEX OF VEIN. WORKINGS APPARENTLY CLOSED BY 1913 DUE TO BAD AIR.

Reference information

Bibliographic references

  • Deposit

    PATTON, H.B., 1917, GEOLOGY AND ORE DEPOSITS OF THE PLATORO-SUMMITVILLE MINING DISTRICT, COLORADO: CGS BULL. 13.

  • Deposit

    LIPMAN, P.W., 1974, GEOLOGIC MAP OF THE PLATORO CALDERA AREA, SOUTHEASTERN SAN JUAN MOUNTAINS, SOUTHWESTERN COLORADO: USGS MAP I-828.

  • Deposit

    GOW, T.T., AND YANG, W.T., 1914, SURVEY NORTHWEST OF GILMORE, CONEJOS COUNTY, COLORADO: COLORADO SCHOOL OF MINES THESIS T-465.

  • Deposit

    BLM MINERAL SURVEY MS 15371

  • Deposit

    CALKIN, W.S., 1967, GEOLOGY, ALTERATION, AND MINERALIZATION OF THE ALUM CREEK AREA, SAN JUAN VOLCANIC FIELD, COLORADO: COLORADO SCHOOL OF MINES THESIS T-1113.

General comments

Subject category Comment text
Deposit POST-SUMMITVILLE-COLLAPSE IGNEOUS ACTIVITY INCLUDES EMPLACEMENT OF ALAMOSA RIVER MONZONITE STOCK ALONG SOUTH BOUNDING CORNWALL RING FAULT AND LOCAL VOLCANIC VENTS AT SHEEPSHEAD, LOOKOUT MTN, AND ELEPHANT MTN. CALKIN (1967) DESCRIBES VENT-DOME COMPLEXES AS CONSISTING OF LOWER FRIABLE AGGLOMERATIC TUFF (QUARTZ LATITE AND VITROPHYRE), MIDDLE BLACK VITROPHYRE INTERMIXED AND INTERCALATED WITH UPPER QUARTZ LATITE CORE. MINERALIZATION FOUND ON ARLA VEIN MAY HAVE BEEN ALTERED RADIAL FRACTURE OR QUARTZ LATITE PORPHYRY DIKE. FIRST SECTION OF TUNNEL PROBABLY PASSES THROUGH PROGRESSIVELY ALTERED ROCKS, FROM OUTER PROPYLITIC ZONE THROUGH ARGILLIC ZONE AND INTO QUARTZ-ALUNITE ZONE ADJACENT VENT. BEND IN TUNNEL COULD REFLECT INTERSECTION WITH UNALTERED VENT FACIES AT DEPTH. MINE DISCHARGE WATER NOTED TO CONTAIN FE SULFATE AND ARSENIC, POSSIBLY INDICATING AURIFEROUS SULFIDE MINERALIZATION.

Reporter information

Type Date Name Affiliation Comment
Reporter 01-JUN-1983 Schwochow, Stephen D. Colorado Geological Survey

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.