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Minnie Lynch Mine

Past Producer in Saguache county in Colorado, United States with commodities Lead, Silver, Copper, Gold, Zinc, 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. Alteration
  9. Host and associated rocks
  10. Nearby scientific data
  11. Geologic structures
  12. Ore body information
  13. Controls for ore emplacement
  14. Economic information about the deposit and operations
  15. Mining district
  16. Land status
  17. Links to other databases
  18. Bibliographic references
  19. General comments
  20. Reporter information

Geologic information

Identification information

Deposit ID 10013073
MRDS ID D009165
Record type Site
Current site name Minnie Lynch Mine
Related records 10265001

Geographic coordinates

Geographic coordinates: -106.13143, 38.31084 (WGS84)
Elevation 3272
Relative position 15.2 MILES N 02 E FROM SAGUACHE

Site location context

Political divisions (FIPS codes)

Saguache(county)

Colorado(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Bonanza(quadrangle 1:24,000 scale)

Saguache(quadrangle 1:100,000 scale)

Montrose(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

San Luis(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 Saguache

Public Land Survey System information

Meridian Township Range Section Fraction State
New Mexico 047N 008E 19 SE OF NE SW Colorado

Comments on the location information

  • S-T-R, LAT-LONG, AND ELEV. TAKEN FROM BURBANK'S (1932) PLATE 1 (SCALE 1:12000). MINE OR CLAIM LIES NEAR TOP OF DIVIDE BETWEEN RAWLEY GULCH AND COPPER GULCH 1.3 MILES NE OF BONANZA ; INFO FROM LAND.ST :1976

Commodities

Commodity Importance
Lead Primary
Silver Primary
Copper Primary
Gold Secondary
Zinc Critical Secondary
Manganese Critical Tertiary

Materials information

Materials Type of material
Galena Ore
Pyrite Ore
Sphalerite Ore
Tennantite Ore
Chlorite Gangue
Quartz Gangue

Alteration

  • (Local) Early Barren Stage Of Alteration By Fumarolic Or Acid-Hot Spring Activity Resulted In Intense Silicification, Wallrock Replacement By Jaspjasper And Alteration Products Hematite, Diaspore, Alunite Barite, Zunyite, Rutile, And Kaolin Minerals. Later Mineralizing Stage By Alkaline Or Neutral Solutions Deposited Ore And Gangue And Caused Micaceous Alteration (Sericite And Chlorite) And Calcite, Quartz, And Pyrite.

Analytical data

Result GROSS CONTENT OF CRUDE ORE: 17% PB, 1% CU, 0.091 OZ/TON AU, 33.8 OZ/TON AG

Host and associated rocks

  • Host or associated Associated
    Rock type Volcanic Rock (Aphanitic) > Felsic Volcanic Rock > Latite
    Stratigraphic age (youngest) Oligocene
    Stratigraphic age (youngest) Oligocene
  • Host or associated Associated
    Rock type Volcanic Rock (Aphanitic) > Intermediate Volcanic Rock > Andesite
    Rock unit name Rawley Andesite;Bonanza Tuff
    Rock description Rawley Andesite;Bonanza Tuff
  • Host or associated Host
    Rock type Volcanic Rock (Aphanitic) > Intermediate Volcanic Rock > Andesite
    Rock unit name Rawley Andesite;Rawley Andesite
    Rock description Rawley Andesite;Rawley Andesite

Economic information

Geologic structures

Type of structure Regional
Structure description Sawatch Range, San Juan Volcanic Field, Rio Grande Rift
Type of structure Local
Structure description Bonanza Caldera

Ore body information

  • Thickness 1.52M

Controls for ore emplacement

  • See Comments

Economic information about the deposit and operations

Development status Past Producer
Commodity type Metallic
Deposit size Small
Significant No

Mining district

District name Bonanza (Kerber Creek)

Land status

Ownership category Private

Comments on the production information

  • PATTON REPORTS PRE-1800 PRODUCTION OF ABOUT 60 TONS ORE VALUED AT $40/TON IN 1914, ABOUT 4 TONS ORE PRODUCED AND VALUED AT $79/TON.

Comments on the workings information

  • MINE DEVELOPED BY 3 OR 4 TUNNELS (CAVED NEAR PORTALS) DRIVEN NE TO ENE AND SEVERAL SHAFTS, MAIN TUNNEL HAS 90-FT DRIFT AND 25-FT WINZE DEVELOPED ALONG VEIN

Reference information

Bibliographic references

  • Deposit

    PATTON, H.B., 1916, GEOLOGY AND ORE DEPOSITS OF THE BONANZA DISTRICT, SAGUACHE COUNTY, COLORADO: COLORADO GEOLOGICAL SURVEY BULL. 9, 136 P.

  • Deposit

    BURBANK, W.S., 1932, GEOLOGY AND ORE DEPOSITS OF THE BONANZA MINING DISTRICT, COLORADO: USGS PROF. PAPER 169, 166 P.

General comments

Subject category Comment text
Deposit VEIN TRENDS N 85 W, 73 NE, AT DEPTH, THE WORKINGS SHOW THE VEIN DIP FLATTENING TO 45 TO 50 NE.

Reporter information

Type Date Name Affiliation Comment
Reporter 01-FEB-1982 Schwochow, Stephen D. Colorado Geological Survey

Beyond USGS

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

External references

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.