Colqui, Peru

Producer in Lima, Peru with commodities Lead, Zinc, Copper, Silver, Gold, Cadmium, Mercury

Sections on this page

Identification information
Geographic coordinates
Site location context
Geographic areas
Commodities
Materials information
Alteration
Host and associated rocks
Nearby scientific data
Ore body information
Controls for ore emplacement
Economic information about the deposit and operations
Mining district
Ownership information
Production statistics
Links to other databases
Bibliographic references
General comments
Reporter information

Geologic information

Identification information

Deposit ID	10079728
MRDS ID	W029829
Record type	Site
Current site name	Colqui, Peru
Alternate or previous names	Finlandia Vein, Quinarcan, Ivonne Cobre, Gaby, Vermouth, San Juan, Lourdes, Yau-Yau, Colqui, Maria Teresa, Veins
Related records	10182699

Geographic coordinates

Geographic coordinates:	-76.46306, -11.54871 (WGS84)
Elevation	4250
Relative position	75 KM NE OF LIMA, 27 KM NW OF CASAPALCA.

Site location context

Political divisions (FIPS codes)

Lima(province)

Peru(country)

South America(continent)

Land(continent)

Geographic areas

Country	State
Peru	Lima
Peru	Lima

Comments on the location information

IN HEADWATERS OF SANTA EULALIA VALLEY.

Commodities

Commodity	Importance
Lead	Primary
Zinc Critical	Primary
Copper	Secondary
Silver	Secondary
Gold	Secondary
Cadmium	Secondary
Mercury	Tertiary

Materials information

Materials	Type of material
Argentite	Ore
Chalcopyrite	Ore
Cinnabar	Ore
Electrum	Ore
Galena	Ore
Gold	Ore
Marcasite	Ore
Polybasite	Ore
Proustite	Ore
Realgar	Ore
Sphalerite	Ore
Stibnite	Ore
Tennantite	Ore
Tetrahedrite	Ore
Wolframite	Ore
Barite	Gangue
Fluorite	Gangue
Kaolinite	Gangue
Quartz	Gangue
Rhodochrosite	Gangue
Rhodonite	Gangue
Sericite	Gangue
Siderite	Gangue
Pyrite	Unknown

Alteration

(Local) District Wide Propylitic Alteration, Near Finlandia Vein Changes To Argillic And Closer To Quartz-Sericite Alteration.

Analytical data

Result	1.4 G PER TON AU, 138.7 G PER TON AG, 3.2 % PB, 0.3 % CU, 4.9 % ZN (AVERAGE). AU/AG=2B, BASE METAL PERCENT OF TOTAL TONNAGE 17.5%
Result	PALEODEPTH ESTIMATES 900-1100 M. KAMILLI AND OHMOTO (1977) CONTAINS EXTENSIVE FLUID INCLUSION, DISSOLVED GASES, CHEMICAL COMPOSITION OF INCLUSIONS, AND SULFUR ISOTOPE DATA. DATA SUGGESTS TEMPERATURE CONSTANT AT ABOUT 270 DEGREES C IN LAST STAGES. BOILING TOOK PLACE EARLY IN SEQUENCE OF MINERALIZATION. STAGE II FLUIDS AT 270 DEGREES C HAD FS2= -10.2 +/- 0.6, PH=5.1 +/- 0.4, FO2 = -34.6 +/- 1.6, FCO2 =1.3 +/- 0.2 AND LOG M(EPSILON)S= -2.5 +/- 1.0.

Result

1.4 G PER TON AU, 138.7 G PER TON AG, 3.2 % PB, 0.3 % CU, 4.9 % ZN (AVERAGE). AU/AG=2B, BASE METAL PERCENT OF TOTAL TONNAGE 17.5%

Result

PALEODEPTH ESTIMATES 900-1100 M. KAMILLI AND OHMOTO (1977) CONTAINS EXTENSIVE FLUID INCLUSION, DISSOLVED GASES, CHEMICAL COMPOSITION OF INCLUSIONS, AND SULFUR ISOTOPE DATA. DATA SUGGESTS TEMPERATURE CONSTANT AT ABOUT 270 DEGREES C IN LAST STAGES. BOILING TOOK PLACE EARLY IN SEQUENCE OF MINERALIZATION. STAGE II FLUIDS AT 270 DEGREES C HAD FS2= -10.2 +/- 0.6, PH=5.1 +/- 0.4, FO2 = -34.6 +/- 1.6, FCO2 =1.3 +/- 0.2 AND LOG M(EPSILON)S= -2.5 +/- 1.0.

Host and associated rocks

Host or associated	Associated
Rock type	Volcanic Rock (Aphanitic) > Intermediate Volcanic Rock > Andesite
Rock unit name	Ustro Formation;Llicpe, Grande, Sasca, Piti Stocks
Rock description	Ustro Formation;Llicpe, Grande, Sasca, Piti Stocks

Host or associated	Host
Rock type	Sedimentary Rock > Carbonate > Limestone
Rock unit name	Finlandia Formation;Lower Colqui Formation;Middle Colqui Formation;Upper Colqui Formation;Lourdes Formation
Rock description	Finlandia Formation;Lower Colqui Formation;Middle Colqui Formation;Upper Colqui Formation;Lourdes Formation

Nearby scientific data

(1)	-76.46306, -11.54871	ListMap

Economic information

Ore body information

Name GENERAL DEPOSIT

Dip }

Thickness 2.5M

Length 8000M

Width 2000M

Depth to top 440M
Name FINLANDIA VEIN

Dip }

Thickness 1.25M

Length 1500M

Depth to top 480M

Name	GENERAL DEPOSIT
Dip	}
Thickness	2.5M
Length	8000M
Width	2000M
Depth to top	440M

Name	FINLANDIA VEIN
Dip	}
Thickness	1.25M
Length	1500M
Depth to top	480M

Controls for ore emplacement

Tension Ene Faults

Economic information about the deposit and operations

Development status	Producer
Commodity type	Metallic
Significant	No
Year of first production	1956

Mining district

District name	Colqui Mining District

Ownership information

Type Owner-Operator

Owner Sociedad Minera Colqui Orco S. A. ; Cia. Minera Huampar S. A.

First year 1924

Last year 1929

Type	Owner-Operator
Owner	Sociedad Minera Colqui Orco S. A. ; Cia. Minera Huampar S. A.
First year	1924
Last year	1929

Production statistics

Year

1976

Material

ORE

Accuracy

Accurate

Description

Ap_Grade: ^57.2 % Zn, 0.2 % Cu, 1.7 % Pb, 1.4 G Per Ton Au, 132 G Per Ton Ag (Concentrate)

Importance	Item	Commodity	Group	Grade
	Ore	Silver	Silver	132g/mt
	Ore	Gold	Gold	1g/mt
	Ore	Lead	Lead	2wt-pct
Major	Ore	Copper	Copper	0wt-pct
	Ore	Zinc	Zinc	57wt-pct

Year

1976

Material

ORE

Accuracy

Accurate

Description

Ap_Grade: ^63.0 % Pb, 4.1 % Cu, 5.3 % Zn, 20.8 G Per Ton Au, 2610 G Per Ton Ag(Concentrate)

Importance	Item	Commodity	Group	Grade
	Ore	Zinc	Zinc	5wt-pct
Major	Ore	Copper	Copper	4wt-pct
	Ore	Lead	Lead	63wt-pct
	Ore	Silver	Silver	2610g/mt
	Ore	Gold	Gold	21g/mt

Comments on the production information

D1,2) LA MINERIA EN EL PERU, ANUARIO MINERO COMERCIAL 1977; 1968-1973 PRODUCTION FROM FINLANDIA VEIN.

Comments on the reserve resource information

H1) 252,000 MET TONS PROVED + 37,000 MET TONS PROBABLE RESERVE; ORE(1) = PROVED, ORE(2) = PROBABLE

Comments on the workings information

AT LEAST 9 LEVELS IN FINLANDIA VEIN.

Comments on development

ECON.COM: CAPACITY (1976): 245 MET TPD; MILL CAPACITY FOR 1982 TO 1984 ; MILL.CAP : 300 MT/DAY

Reference information

Links to other databases

Agency	Database name	Acronym	Record ID	Notes
USGS	Mineral Resources Data System	MRDS	W029829

Bibliographic references

Deposit

BELLIDO BRAVO, E. AND DE MONTREUIL D., L.,1972, ASPECTOS GENERALES DE LA METALOGENIA DEL PERU, P.74, MINISTERIO DE ENERGIA Y MINAS, SERVICIO DE GEOLOGIA Y MINERIA
Deposit

ENGINEERING & MINING JOURNAL INTERNATIONAL DIRECTORY OF MINES 1979, P. 321.
Deposit

ENGINEERING & MINING JOURNAL INTERNATIONAL DIRECTORY OF MINES 1985, P. 291.
Deposit

HEALD, P., FOLEY, N. K, AND HAYBA, D.O., 1987, COMPARATIVE ANATOMY OF VOLCANIC HOSTED EPITHERMAL DEPOSITS: ACID-SULFATE AND ADULARIA-SERICITE TYPES: ECONOMIC GEOLOGY, V. 82, P. 1-26.
Deposit

KAMILLI, R.J., AND OHMOTO, H., 1977, PARAGENESIS, ZONING, FLUID INCLUSION, AND ISOTOPIC STUDIES OF THE FINLANDIA VEIN, COLQUI DISTRICT, CENTRAL PERU: ECONOMIC GEOLOGY, V. 72, NO. 6, P. 950-982.
Production

E&MJ (1979), WORLD DIRECTORY (1984); CUMULATIVE DATA FROM KAMILLI AND OHMOTO (1977).

General comments

Subject category	Comment text
Deposit	FIVE STAGES OF MINERALIZATION DESCRIBED FOR FINLANDIA VEIN. THE SECOND STAGE PRODUCED AT LEAST TWO AU-AG RICH ORE SHOOTS.

Reporter information

Type	Date	Name	Affiliation	Comment
Reporter	01-AUG-1978	Theune, C.T.	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.

Colqui, Peru

Geologic information

Identification information

Geographic coordinates

Site location context

Geographic areas

Comments on the location information

Commodities

Materials information

Alteration

Analytical data

Host and associated rocks

Nearby scientific data

Economic information

Ore body information

Controls for ore emplacement

Economic information about the deposit and operations

Mining district

Ownership information

Production statistics

Comments on the production information

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

Production

General comments

Reporter information

Beyond USGS

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