Cerro De Pasco

Producer in Pasco, Peru with commodities Zinc, Silver, Lead, Copper, Gold, Tin, Arsenic

Sections on this page

Identification information
Geographic coordinates
Site location context
Geographic areas
Commodities
Materials information
Mineral occurrence model information
Host and associated rocks
Nearby scientific data
Geologic structures
Ore body information
Economic information about the deposit and operations
Mining district
Ownership information
Reserves and resources
Links to other databases
Bibliographic references
General comments
Reporter information

Geologic information

Identification information

Deposit ID	10084848
MRDS ID	W700062
Record type	Site
Current site name	Cerro De Pasco
Alternate or previous names	Ore Bodies: San Alberto, Eastern Cn-A, Western Cn-A, J-337, Cn-B, K-327a, M-309 Cn = Cayac Noruega, Cleopatra Vein System, 43 Vein, Matagente Vein
Related records	10279856

Geographic coordinates

Geographic coordinates:	-76.24972, -10.63125 (WGS84)
Relative position	175 KM NE OF LIMA.

Site location context

Political divisions (FIPS codes)

Pasco(province)

Peru(country)

South America(continent)

Land(continent)

Geographic areas

Country	State
Peru	Pasco

Commodities

Commodity	Importance
Zinc Critical	Primary
Silver	Primary
Lead	Primary
Copper	Primary
Gold	Secondary
Tin Critical	Tertiary
Arsenic Critical	Tertiary

Materials information

Materials	Type of material
Argentite	Ore
Bismuthinite	Ore
Bornite	Ore
Bournonite	Ore
Cassiterite	Ore
Chalcocite	Ore
Chalcopyrite	Ore
Copper	Ore
Covellite	Ore
Enargite	Ore
Galena	Ore
Gold	Ore
Malachite	Ore
Marcasite	Ore
Polianite	Ore
Polybasite	Ore
Pyrite	Ore
Pyrrhotite	Ore
Realgar	Ore
Sphalerite	Ore
Stannite	Ore
Tennantite	Ore
Wolframite	Ore
Alunite	Gangue
Ankerite	Gangue
Barite	Gangue
Dickite	Gangue
Halloysite	Gangue
Hematite	Gangue
Quartz	Gangue
Sericite	Gangue
Siderite	Gangue
Sulfur	Gangue

Analytical data

Result	THE HIGH GRADE ORE SHOWS A TREND WITH DEPTH. BETWEEN LEVELS 300-375 THE GRADE IS 12.0% PB, 16.9% ZN, AND 5.1% AG. BETWEEN LEVELS 500-600 THERE IS 8.0% PB, 18.2% ZN, AND 4.9% AG. BETWEEN LEVELS 800-1,000 THERE IS 7.8% PB, 18.1% ZN, AND 5.4% AG. BETWEEN LEVELS 1,200-1,400 THERE IS 6.5% PB, 21.0% ZN, AND 3.1% AG. COPPER IS A DECIDEDLY MINOR COMPONENT OF ALL THE LEAD-ZINC ORES PROPER, AVERAGING IN THE NEIGHBOURHOOD OF 0.15%. MOST OF THE SILVER IS CONTAINED IN COPPER-RICH SULPHOSALTS, CHIEFLY TENNANTITE. FES IN SPHALERITE 0.25-0.35 MOLE % IN CORES TO 0.15 MOLE % IN RIMS. EINAUDI (1977) GIVES PYRRHOTITE COMPOSITION OF BOTH HEXAGONAL AND MONOCLINIC PYRRHOTITE. SULFUR ISOTOPE DATA.

Result

THE HIGH GRADE ORE SHOWS A TREND WITH DEPTH. BETWEEN LEVELS 300-375 THE GRADE IS 12.0% PB, 16.9% ZN, AND 5.1% AG. BETWEEN LEVELS 500-600 THERE IS 8.0% PB, 18.2% ZN, AND 4.9% AG. BETWEEN LEVELS 800-1,000 THERE IS 7.8% PB, 18.1% ZN, AND 5.4% AG. BETWEEN LEVELS 1,200-1,400 THERE IS 6.5% PB, 21.0% ZN, AND 3.1% AG. COPPER IS A DECIDEDLY MINOR COMPONENT OF ALL THE LEAD-ZINC ORES PROPER, AVERAGING IN THE NEIGHBOURHOOD OF 0.15%. MOST OF THE SILVER IS CONTAINED IN COPPER-RICH SULPHOSALTS, CHIEFLY TENNANTITE. FES IN SPHALERITE 0.25-0.35 MOLE % IN CORES TO 0.15 MOLE % IN RIMS. EINAUDI (1977) GIVES PYRRHOTITE COMPOSITION OF BOTH HEXAGONAL AND MONOCLINIC PYRRHOTITE. SULFUR ISOTOPE DATA.

Mineral occurrence model information

Model code	72
USGS model code	19a
Deposit model name	Polymetallic replacement
Mark3 model number	47

Host and associated rocks

Host or associated

Associated

Rock type

Plutonic Rock > Granitoid > Quartz Monzonite

Rock unit name

Excelsior Formation;Mitu Formation;Rumillana Agglomerate

Rock description

Excelsior Formation;Mitu Formation;Rumillana Agglomerate

Stratigraphic age (youngest)	Tertiary
Chronological age	14.5
Dating method	K-Ar

Host or associated Associated

Rock type Metamorphic Rock > Metasedimentary Rock > Quartzite
Host or associated Associated

Rock type Metamorphic Rock > Phyllite

Host or associated	Associated
Rock type	Metamorphic Rock > Metasedimentary Rock > Quartzite

Host or associated	Associated
Rock type	Metamorphic Rock > Phyllite

Host or associated

Associated

Rock type

Volcanic Rock (Aphanitic) > Felsic Volcanic Rock > Rhyolite

Stratigraphic age (youngest)	Tertiary
Chronological age	14.5
Dating method	K-Ar

Host or associated Host

Rock type Metamorphic Rock > Metasedimentary Rock > Quartzite
Host or associated Host

Rock type Metamorphic Rock > Phyllite

Host or associated	Host
Rock type	Sedimentary Rock > Carbonate > Dolomite
Rock unit name	Pucara Group;Excelsior Group
Rock description	Pucara Group;Excelsior Group

Nearby scientific data

(1)	-76.24972, -10.63125	ListMap

Economic information

Geologic structures

Type of structure	Local
Structure description	Broad, N. Plunging Anticline Intruded By Tertiary Volcanic Vent About 2.5 Km In Diameter; Folds Plunge 5-15 Degrees South.

Ore body information

Name	PYRITE-QUARTZ BODY
General form	FUNNEL SHAPED
Strike	}N-S, NNW}E-W}}}E-W}N50-60W
Dip	}70-90W}}45-30}}STEEP}70-80S
Plunge	80 NNW, 25N
Thickness	300M
Length	1800M
Depth to top	850M

Name E-W FISSURES

General form FUNNEL SHAPED

Strike }N-S, NNW}E-W}}}E-W}N50-60W

Dip }70-90W}}45-30}}STEEP}70-80S

Plunge S

Thickness 50M

Length 140M

Depth to top 440M

Name	E-W FISSURES
General form	FUNNEL SHAPED
Strike	}N-S, NNW}E-W}}}E-W}N50-60W
Dip	}70-90W}}45-30}}STEEP}70-80S
Plunge	S
Thickness	50M
Length	140M
Depth to top	440M

Name	PYRRHOTITE PIPES, EASTERN CN-A, WESTERN CN-A
General form	FUNNEL SHAPED
Strike	}N-S, NNW}E-W}}}E-W}N50-60W
Dip	}70-90W}}45-30}}STEEP}70-80S
Thickness	2M
Length	1300M
Depth to top	80M

Name K-327-A, CAYAC-NORUEGA-A

General form FUNNEL SHAPED

Strike }N-S, NNW}E-W}}}E-W}N50-60W

Dip }70-90W}}45-30}}STEEP}70-80S

Length 500M
Name ENARGITE AND ENARGITE-TENNANTITE VEINS, CLEOPATRA VEIN SYSTEM, EXCELSIOR VEIN SYSTEM

General form FUNNEL SHAPED

Dip }70-90W}}45-30}}STEEP}70-80S
Name LEAD-ZINC VEINS, MATAGENTE VEIN SYSTEM

General form FUNNEL SHAPED

Dip }70-90W}}45-30}}STEEP}70-80S

Name	K-327-A, CAYAC-NORUEGA-A
General form	FUNNEL SHAPED
Strike	}N-S, NNW}E-W}}}E-W}N50-60W
Dip	}70-90W}}45-30}}STEEP}70-80S
Length	500M

Name	ENARGITE AND ENARGITE-TENNANTITE VEINS, CLEOPATRA VEIN SYSTEM, EXCELSIOR VEIN SYSTEM
General form	FUNNEL SHAPED
Dip	}70-90W}}45-30}}STEEP}70-80S

Name	LEAD-ZINC VEINS, MATAGENTE VEIN SYSTEM
General form	FUNNEL SHAPED
Dip	}70-90W}}45-30}}STEEP}70-80S

Economic information about the deposit and operations

Development status	Producer
Commodity type	Metallic
Significant	No
Discovery year	1630

Mining district

District name	Chaupimarca

Ownership information

Type Owner-Operator

Owner Cerro De Pasco Copper Corp. , Centromin

First year 1902

Last year 1973

Type	Owner-Operator
Owner	Cerro De Pasco Copper Corp. , Centromin
First year	1902
Last year	1973

Comments on the production information

IN 1919 SINGEWALD ESTIMATED THAT $565,000,000. IN AG HAD BEEN PRODUCED AVERAGING 11 OZ/TON AG, 7% CU, AND UP TO 1 OZ/TON AU. ORE (1990) INCLUDES MATERIAL FROM SAN EXPEDITO. ORE (1) UNDERGROUND COPPER ORE; ORE (2) OPEN-PIT COPPER; ORE (3) OPEN-PIT COPPER LEACHING, ORE (4) UNDERGROUND PB-ZN ORE, ORE (5) OPEN PIT PB-ZN ORE.

Reserves and resources

Type

In-situ

Estimate year

1950

Total resources

9954000000mt ore

Commodity	Subtype	Grade	units	Group	Importance	Year
Zinc	Zn	17	wt-pct	Zinc	Major	1950
Silver	Ag	155.517	g/mt	Silver	Major	1950
Lead	Pb	6	wt-pct	Lead	Major	1950
Copper	Cu	0.2	wt-pct	Copper	Major	1950

Type

In-situ

Estimate year

1960

Total resources

9070000000mt ore

Commodity	Subtype	Grade	units	Group	Importance	Year
Zinc	Zn	12	wt-pct	Zinc	Major	1960
Silver	Ag	127	g/mt	Silver	Major	1960
Lead	Pb	4	wt-pct	Lead	Major	1960
Copper	Cu	0.3	wt-pct	Copper	Major	1960

Comments on the reserve resource information

ORE (1) PROVEN; ORE (2) PROBABLE; UNDERGROUND GRADE (1990) 10.1% ZN, 3.75 OZ/MT AG; OPEN PIT GRADE 8.6% ZN, 3.39 OZ/MT AG.

Comments on the workings information

MAIN SHAFT IS LOURDES SHAFT, MCCUNE PIT.

Comments on development

CONCENTRATOR CAPACITY (JAN, 1991) 6420 MT/DAY WITH FEED GRADE OF 2.62% PB, 7.20% ZN, 85.22 G/MT AG.

Reference information

Links to other databases

Agency	Database name	Acronym	Record ID	Notes
USGS	Mineral Resources Data System	MRDS	W700062

Bibliographic references

Deposit

DUNHAM, K.C., ED., 1950, THE GEOLOGY, PARAGENESIS, AND RESERVES OF THE ORES OF LEAD AND ZINC: INTERNATIONAL GEOLOGIC CONGRESS, 18TH, LONDON, 1948, PT. VII, SYMPOSIUM AND PROCEEDINGS OF SECTION F, P. 30-31, 160-170.
Deposit

CAVANAGH, J., AND GLOVER, M., 1991, THE PERU REPORT'S GUIDE TO MINES AND MINERS IN PERU: PERU REPORTING SERVICIOS EDITORIALES S.R.L., LIMA, P. 133-134.
Deposit

PETERSEN, U., 1965, REGIONAL GEOLOGY AND MAJOR ORE DEPOSITS OF CENTRAL PERU: ECONOMIC GEOLOGY, V. 60, NO. 3, P. 407-476.
Deposit

WARD, H.J., 1961, THE PYRITE BODY AND COPPER OREBODIES CERRO DE PASCO MINE, CENTRAL PERU: ECONOMIC GEOLOGY, V. 56, NO. 2 P. 402-422.
Deposit

KRUGER, F.C., AND LACY, W.C., 1949, GEOLOGICAL EXPLANATION OF GEOPHYSICAL ANOMALIES NEAR CERRO DE PASCO, PERU: ECONOMIC GEOLOGY, V. 44, NO. 6, P. 485-491.
Deposit

EINAUIDI, M. T. ,1977, ENVIRONMENT OF ORE DEPOSITION AT CERRO DE PASCO, PERU: ECONOMIC GEOLOGY, V. 72, NO. 6, P. 893-924.
Deposit

GRATON, L.C., AND BOWDITCH, S.J., 1936, ALKALINE AND ACID SOLUTIONS IN HYPOGENE ZONING AT CERRO DE PASCO: ECONOMIC GEOLOGY, V. 31, NO. 7, P. 651-698.
Production

ANNUAL PRODUCTION 1980-1990, CAVANAGH AND GLOVER (1991). CUMULATIVE PRODUCTION ORES (1-5), EINAUDI (1977).
Reserve-Resource

ORES (1 AND 2), CAVANAGH AND GLOVER (1991).

General comments

Subject category	Comment text
Deposit	ORE BODY 1: IN LONG SECTION IS TROUGH-SHAPED, IN CROSS-SECTION BROADLY ANTICLINAL IN FORM, PYRITE-QUARTZ OCCUR IN EQUAL PROPORTIONS AND MAKE UP 90% OF BODY. TRACE AMOUNTS OF ARSENOPYRITE, SPHALERITE, CHALCOPYRITE, AND PYRRHOTITE. MINOR AMOUNTS OF SPHALERITE, GALENA, PYRITE, AND MUSCOVITE OCCUR IN CROSS-CUTTING VEINLETS. ORE BODY 3 EASTERN CN-A PIPE OCCURS IN ORE BODY 4, 30-70 M IN DIAMETER. WESTERN CN-A PIPE CONSISTS OF 4 DISCONTINUOUS TABULAR BODIES. CORE ZONE OF PIPES ARE ZONED VERTICALLY WITH DEEP LEVEL OF PYRRHOTITE-SPHALERITE-CHALCOPYRITE-STANNITE, AND PYRRHOTITE-SPHALERITE-ARSENOPYRITE THAT IS PRESENT IN TOTAL VERTICAL EXTENT. PIPE HAS TRANSITION ZONE WHERE PYRRHOTITE IS ALTERED TO PYRITE AND MARCASITE. ORE BODY 5 INCLUDES 43 VEINS THAT STRIKE N60W, 30-70N; OTHERS VARY N75W-N65E, 70-80S; SAN ANSELMO VEIN N60E, 60N. EXCELSIOR-CLEOPATRA VEIN N60E-N80W, 60N.
Deposit	SPONTANEOUS POLARIZATION AND RESISTIVITY OVER SCATTERED OUTCROPS AT VENENCOCHA, NW SIDE OF CERRO DE PASCO DELINEATED TWO ANOMALIES THAT WERE DRILLED WITHOUT FINDING SULFIDES. THESE ANOMALIES CORRELATE WITH AN AREA OF ALUNITIZATION. KRUGER AND LACY (1949) BELIEVE THIS IS ALTERATION BELOW AND ERODED AWAY ORE BODY. ; INFO.SRC : 1 PUB LIT

Subject category

Comment text

Deposit

ORE BODY 1: IN LONG SECTION IS TROUGH-SHAPED, IN CROSS-SECTION BROADLY ANTICLINAL IN FORM, PYRITE-QUARTZ OCCUR IN EQUAL PROPORTIONS AND MAKE UP 90% OF BODY. TRACE AMOUNTS OF ARSENOPYRITE, SPHALERITE, CHALCOPYRITE, AND PYRRHOTITE. MINOR AMOUNTS OF SPHALERITE, GALENA, PYRITE, AND MUSCOVITE OCCUR IN CROSS-CUTTING VEINLETS. ORE BODY 3 EASTERN CN-A PIPE OCCURS IN ORE BODY 4, 30-70 M IN DIAMETER. WESTERN CN-A PIPE CONSISTS OF 4 DISCONTINUOUS TABULAR BODIES. CORE ZONE OF PIPES ARE ZONED VERTICALLY WITH DEEP LEVEL OF PYRRHOTITE-SPHALERITE-CHALCOPYRITE-STANNITE, AND PYRRHOTITE-SPHALERITE-ARSENOPYRITE THAT IS PRESENT IN TOTAL VERTICAL EXTENT. PIPE HAS TRANSITION ZONE WHERE PYRRHOTITE IS ALTERED TO PYRITE AND MARCASITE. ORE BODY 5 INCLUDES 43 VEINS THAT STRIKE N60W, 30-70N; OTHERS VARY N75W-N65E, 70-80S; SAN ANSELMO VEIN N60E, 60N. EXCELSIOR-CLEOPATRA VEIN N60E-N80W, 60N.

Deposit

SPONTANEOUS POLARIZATION AND RESISTIVITY OVER SCATTERED OUTCROPS AT VENENCOCHA, NW SIDE OF CERRO DE PASCO DELINEATED TWO ANOMALIES THAT WERE DRILLED WITHOUT FINDING SULFIDES. THESE ANOMALIES CORRELATE WITH AN AREA OF ALUNITIZATION. KRUGER AND LACY (1949) BELIEVE THIS IS ALTERATION BELOW AND ERODED AWAY ORE BODY. ; INFO.SRC : 1 PUB LIT

Reporter information

Type	Date	Name	Affiliation	Comment
Reporter	01-JAN-1988	Leonard, Kenneth R.	U.S. Geological Survey
Updater	01-NOV-1993	Page, Norman J.	U.S. Geological Survey

Beyond USGS

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

Cerro De Pasco

Geologic information

Identification information

Geographic coordinates

Site location context

Geographic areas

Commodities

Materials information

Analytical data

Mineral occurrence model information

Host and associated rocks

Nearby scientific data

Economic information

Geologic structures

Ore body information

Economic information about the deposit and operations

Mining district

Ownership information

Comments on the production information

Reserves and resources

Comments on the reserve resource information

Comments on the workings information

Comments on development

Reference information

Links to other databases

Bibliographic references

Deposit

Deposit

Deposit

Deposit

Deposit

Deposit

Deposit

Production

Reserve-Resource

General comments

Reporter information

Beyond USGS

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