Manhattan District

Site Name

Primary: Manhattan District

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Commodity

Primary: Gold
Primary: Silver
Secondary: Copper
Tertiary: Zinc
Tertiary: Uranium
Tertiary: Lead

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Location

State: Colorado
County: Larimer
District: Manhattan District

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Land Status

Land ownership: Private
Note: the land ownership field only identifies whether the area the mine is in is generally on public lands like Forest Service or BLM land, or if it is in an area that is generally private property. It does not definitively identify property status, nor does it indicate claim status or whether an area is open to prospecting. Always respect private property.

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Holdings

Not available

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Workings

Not available

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Ownership

Owner Name: Edwon G. Yedlik (Sodom Mine)
Home Office: Fort Collins, Co.
Years: 1971 -

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Production

Not available

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Deposit

Record Type: District
Operation Category: Past Producer
Operation Type: Unknown
Year Last Production: 1941
Discovery Method: Ore-Mineral In Place
Years of Production:
Organization:
Significant: N
Deposit Size: S

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Physiography

General Physiographic Area: Rocky Mountain System
Physiographic Province: Southern Rocky Mountains

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Mineral Deposit Model

Not available

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Orebody

Not available

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Structure

Type: R
Description: Front Range Uplift, Sherman Batholith, Rawah Batholith

Type: L
Description: Poudre River Shear Zone, Elkhorn Creek Shear Zone

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Alterations

Alteration Type: L
Alteration Text: Oxidation Of Pyritic Ores

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Rocks

Name: Quartz Monzonite
Role: Associated
Age Type: Host Rock
Age Young: Pliocene

Name: Quartz Monzonite
Role: Associated
Age Type: Associated Rock
Age Young: Mesoproterozoic

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Analytical Data

Analytical Data: 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.

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Materials

Ore: Chalcopyrite
Ore: Pitchblende
Ore: Pyrite
Ore: Uranophane
Ore: Sphalerite
Ore: Galena

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Comments

Comment (Location): 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

Comment (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).

Comment (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

Comment (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.

Comment (Workings): MOST MINES DEVELOPED BY HILLSIDE TUNNELS AND CROSSCUT TUNNELS; VE RTICAL AND INCLINED SHAFTS UP TO 165 FT DEEP; OPEN CUTS

Comment (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

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References

Reference (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.

Reference (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.

Reference (Deposit): COLORADO DIV. MINES INF. REPTS. AND ANNUAL OPERATOR REPTS.

Reference (Deposit): BLM MINERAL SURVEYS

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

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