Manhattan District

Past Producer in Larimer county in Colorado, United States with commodities Gold, Silver, Copper, Lead, Zinc, Uranium
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. 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 10101858
MRDS ID D010594
Record type District
Current site name Manhattan District
Related records 10013999

Geographic coordinates

Geographic coordinates: -105.59977, 40.7322 (WGS84)
Elevation 2582
Relative position 31.5 MILES N70W FROM FORT COLLINS

Site location context

Political divisions (FIPS codes)

Larimer(county)

Colorado(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Rustic(quadrangle 1:24,000 scale)

Fort Collins(quadrangle 1:100,000 scale)

Greeley(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Cache La Poudre(hydrologic unit)

South Platte(hydrologic accounting unit)

South Platte(hydrologic subregion)

Missouri(hydrologic region)

Federal lands

Arapaho and Roosevelt National Forests(National Forest)

National Forest FS(Type of land area)

FS(Federal land areas administered by FS)

Geographic areas

Country State County
United States Colorado Larimer

Public Land Survey System information

Meridian Township Range Section Fraction State
6th Principal 009N;009N 073W;074W 13,15,16,18,19,20,21,29,30;24 Colorado

Comments on the location information

  • DISTRICT LIES NORTH OF CACHE LA POUDRE RIVER AND IS ACCESSIBLE VIA ROAD AND TRAILS UP SEVENMILE CREEK AND TRIBUTARIES NORTH FROM GLEN EC HO AND RUSTIC, VIA MANHATTAN ROAD SOUTH FROM RED FEATHERS LAKES, AND V IA ROAD FROM LIVERMORE THRU LOG CABIN (SEC. 9, T9N, R72W). MANHATTAN S ITE LIES NEAR HEAD OF MANHATTAN CREEK 0.6 MILE SE OF PROHIBITION MTN A ND 2.5 MILES NNW OF RUSTIC. DISTRICT ALSO EXTENDS WESTWARD ONTO KINIKI NIK QUAD. ELEV AND LAT-LONG GIVEN ARE FOR MANHATTAN SITE (C N2 SEC. 20 , T9N, R73W). ; INFO FROM LAND.ST :1980

Commodities

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

Materials information

Materials Type of material
Chalcopyrite Ore
Galena Ore
Pitchblende Ore
Pyrite Ore
Sphalerite Ore
Uranophane Ore

Alteration

  • (Local) Oxidation Of Pyritic Ores

Analytical data

Result ORE FROM CACHE TUNNEL CONTAINED 0.25 TO 0.35 OZ/TON AU, BUT OXIDIZ ED ORE IN VEIN OUTCROPS ON EROSION SURFACE CONTAINED 1.5 TO 15 OZ/TON AU AND ASSAYED ABOUT 4 OZ/TON AU AT DEPTHS OF LESS THAN 30 FT. PARTLY OXIDIZED ORE AT 125 FT CONTAINED 1.0 TO 1.5 OZ/TON AU. MILLING ORE FRO M FREE GOLD MINE ASSAYED 0.08 TO 0.12 OZ/TON AU, 0.02 OZ/TON AG, 0.02% CU. MILLING ORE FROM ROCKFIELD MINE CONTAINED 0.13 TO 18 OZ/TON AU, 1 TO 1.5 OZ/TON AG.

Host and associated rocks

  • Host or associated Associated
    Rock type Plutonic Rock > Granitoid > Quartz Monzonite
    Rock unit name Sherman Granite;Laramide Intrusive Rocks-Quartz Monzonite Porphyry
    Rock description Sherman Granite;Laramide Intrusive Rocks-Quartz Monzonite Porphyry
    Stratigraphic age (youngest) Pliocene
    Stratigraphic age (youngest) Mesoproterozoic
  • Host or associated Host
    Rock type Plutonic Rock > Granitoid > Quartz Monzonite
    Rock unit name Sherman Granite;Metamorphic Rocks-Felsic And Hornblendic Gneisses
    Rock description Sherman Granite;Metamorphic Rocks-Felsic And Hornblendic Gneisses

Nearby scientific data

(1) -105.59977, 40.7322

Economic information

Geologic structures

Type of structure Regional
Structure description Front Range Uplift, Sherman Batholith, Rawah Batholith
Type of structure Local
Structure description Poudre River Shear Zone, Elkhorn Creek Shear Zone

Controls for ore emplacement

  • East-West And Wnw-Trending Laramide Quartz Monzonite Dikes

Economic information about the deposit and operations

Development status Past Producer
Commodity type Metallic
Deposit size Small
Significant No
Discoverer Missouri Mining And Milling Co. (Monte Cristo And Emily Claimant, 1898)
Year of last production 1941

Mining district

District name Manhattan District

Land status

Ownership category Private

Ownership information

  • Type Operator
    Owner Edwon G. Yedlik (Sodom Mine)
    Home office Fort Collins, Co.
    First year 1971

Comments on the workings information

  • MOST MINES DEVELOPED BY HILLSIDE TUNNELS AND CROSSCUT TUNNELS; VE RTICAL AND INCLINED SHAFTS UP TO 165 FT DEEP; OPEN CUTS

Comments on development

  • AREA PROBABLY PROSPECTED AS EARLY AS 1860S BUT FIRST CLAIMS SURVE YED AND PATENTED IN 1898 AND 1904-05. PLACER GROUND WAS WORKED INTERMI TTENTLY BUT ONLY SMALL PRODUCTION MENTIONED. LAST YEARS OF PRECIOUS ME TALS PRODUCTION WERE 1932, 1935, 1936, 1940, AND 1941. MOST RECENT PRO DUCTION WAS URANIUM FROM OLDER PRECIOUS METAL PROSPECTS AND OTHERS (19 56-1964).

Reference information

Bibliographic references

  • Deposit

    LOVERING, T.S., AND GODDARD, E.N., 1950, GEOLOGY AND ORE DEPOSITS O F THE FRONT RANGE, COLORADO: USGS PROF. PAPER 223, P. 285-286.

  • Deposit

    MARKS, J.H., 1935, REPORT ON MINING PROPERTY OF C.M. GERE, ET. AL., THE GOLD COIN MNG. SYNDICATE, MANHATTAN MNG. DISTRICT, LARIMER COUNTY : COLORADO ST. PLAN. COMM. UNPUB. REPT., 2 P., 3 MAPS.

  • Deposit

    COLORADO DIV. MINES INF. REPTS. AND ANNUAL OPERATOR REPTS.

  • Deposit

    BLM MINERAL SURVEYS

  • Deposit

    NELSON-MOORE, J.L., AND OTHERS, 1978, RADIOACTIVE MINERAL OCCURENCE S OF COLORADO AND BIBLIOGRAPHY: CGS BULL. 40, P. 208-211.

General comments

Subject category Comment text
Deposit DISTRICT LIES IN NORTH FRONT RANGE ON SW EDGE OF SHERMAN BATHOLIT H BETWEEN GENERALLY EAST-WEST-TRENDING POUDRE RIVER AND ELKHORN CREEK SHEAR ZONES. INTRUDING SHERMAN GRANITE AND METAMORPHICS ARE LARAMIDE I NTRUSIVES--MOSTLY EAST-WEST AND WNW-TRENDING QUARTZ MONZONITE PORPHYRY DIKES, QUARTZ MONZONITE STOCK ONE MILE WEST OF MANHATTAN, AND SIMILAR STOCK BORDERING SCHIST UNIT ON NORTH--AND MID-TERTIARY STOCK 3 MILES ESE OF MANHATTAN. PYRITIC AU VEINS TREND N70W TO N80E, DIP NEAR VERTIC AL, AND CROP OUT ON OVERLAND TERTIARY EROSIONAL SURFACE. UNOXIDIZED OR E CONSISTS OF WHITE, COARSE-GRAINED QUARTZ WITH DISSEMINATED PYRITE AN D SOME CHALCOPYRITE. OSIDIZED ORE AT ORIGINAL LEVEL OF EROSIONAL SURFA CE AND TO DEPTH OF 30 FT SHOW AU ENRICHMENT. PARTLY OXIDIZED SULFIDES OCCUR LOCALLY TO DEPTH OF 125 FT IN VEINS UP TO 2 FT WIDE. PRODIGAL AN D EMMA VEINS LIE WITHIN SHERMAN GRANITE. MONTE CRISTO AND COLORADO VEI NS FOLLOW WNW MONZONITE PORPHYRY DIKE. GOLD KING VEIN CUTS ACROSS CONT ACT
Deposit BETWEEN GRNITE AND MONZONITE PORPHYRY STOCK WEST OF MANHATTAN. UR ANIUM REPORTEDLY OCCURS IN PEGMATITES AND STRUCTURALLY CONTROLLED VEIN S AND FRACTURES IN SHERMAN GRANITE.
Deposit INDIVIDUAL RECORDS PREPARED FOR FOLLOWING MINES, CLAIMS, AND PROPE RTIES FOR WHICH LOCATIONS KNOWN OR APPROXIMATED: BATTERSON, BEAR CAT, BERGHOF, CASH, COLORADO, FREE GOLD, GOLD COIN, LADY MOON, MONTE CRISTO , PRODIGAL, ROCKFIELD, SODOM, AND URANIUM QUEEN. OTHER CDM-LISTED PROP ERTIES ON WHICH DEVELOPMENT WORK DONE BUT FOR WHICH LOCATIONS UNKNOWN AND THEREFORE NOT RECORDED HERE INCLUDE GOLD BUG, LITTLE HELEN CLAIMS, LONE STAR, WELCOME, AND WINDY POINT. ; INFO.SRC : 1 PUB LIT; 2 UNPUB REPT; 4 OTHER SRC

Reporter information

Type Date Name Affiliation Comment
Reporter 01-APR-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.

Beyond USGS

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

Authoritative Colorado resources

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