Mine detail: La Grande

Previously called 'CollahuasiRosarioHuinquita OxideUjinaLa Grande Deposits'

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Location

Lat / long:

-20.97257, -68.69618

Resource(M)

Primary:	Copper
Secondary:	Gold
Ore:	Bornite, Chalcocite, Chalcopyrite, Enargite, Pyrite
Gangue:	Quartz, Sericite

Production

Operation type:	Unknown
Production size:	Yes
Development status:	Prospect
First production started:	1896

Geology

Host rock:	Collahuasi Porphyry;
Host type:	Volcanic Rock (Aphanitic),Rhyolite,Andesite
Structure:	Upthrown Block Of Permo-Triassic Rocks In Fault Contact On The West (West Fissure Fault, Nw Trending) Jurassic Marine Sediments And On The East In Fault Contact With Tertiary Volcanics (Loa Fault, Nw-Trending). Hydrothermal Systems In District Are Aligned E-W.
Tectonic:	Andes
Alteration processes:	Phyllic, Argillic

References

MRDS	TC03004
DEP	10057456
Reference	{Deposit:: FRUTOS, J. AND PINCHEIRA, M., 1986, FICHAS METALOGENICAS DE YACIMIENTOS MINERALES METALICOS CHILENOS, IN FRUTOS, J., OYARZUN, J., AND PINCHEIRA, M., EDS., GEOLOGIA Y RECURSOS MINERALES CHILENOS: UNIVERSIDAD DE CONCEPCION, CONCEPCION, P. 841-888.}{Deposit:: RUIZ, C. AND PEEBLES, F., 1988, YACIMIENTOS METALIFEROS DE CHILE: SANTIAGO, 334 P.}{Deposit:: PACCI, D. Y CACERES, R., 1980, INVENTARIO DE YACIMIENTOS METALICOS Y NO-METALICOS, PRIMERA REGION, TARAPACA: IIG, SANTIAGO.}{Deposit:: DICK, L.A., CHAVEZ, W.X., JR., GONZALES, A., AND BISCO, C., 1994, GEOLOGIC SETTING AND MINERALOGY OF THE CU-AG-(AS) ROSARIO VEIN SYSTEM, COLLAHUASI DISTRICT, CHILE: SEG NEWSLETTER, OCT. 1994, NO. 19, P. 1, 6-11.}{Deposit:: LITTLE, M.L., 1993, EXPLORATION REVIEW: SOUTH AMERICA: SEG NEWSLETTER, NO. 15, OCTOBER *3, P. 14.}{Other Database:: CIMRI}{Production:: DICK ET AL (1994).}
Reporter	Williams, William C., Page, Norman J.