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Lepanto Mine, Mancayan mineral district (Mankayan), Benguet Province, Cordillera Administrative Region, Luzon, Philippines

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A copper and gold mine.
Already in the 12th century copper ingots from Mankayan was exchanged with Chinese traders for their goods. When the Spanish came in the 16th century it became their main metal source.
The modern era of mining started in 1936 when the Lepanto Consolidated Mining Company was formed, starting with a 400 ton/day mill production, soon increased to 1000 tpd. Operated for a few years by Mitsui Mining Company/Japan during the WWII. The company was able to start mining again 2 years after the liberation, and increased production to 4500 tpd later. When the production ceased in the enargite mine/orebody in 1996 it had produced 743 kt of Cu, 92 t of Au and 390 t of Ag.
Today the company is working another orebody located appr 3km away: the Victoria project.
High grade gold quartz veins with silver values.
Source; Lepanto Cons. material received at mine visit in Dec. 2001.

Mineral List

19 valid minerals. 1 (TL) - type locality of valid minerals.


Mineralization age: Pleistocene : 1.56 ± 0.29 Ma to 1.17 ± 0.16 Ma

Important note: This table is based only on rock and mineral ages recorded below and is not necessarily a complete representation of the geochronology, but does give an indication of possible mineralization events relevant to this locality. As more age information is added this table may expand in the future. A break in the table simply indicates a lack of data entered here, not necessarily a break in the geologic sequence. Grey background entries are from different, related, localities.

Geologic TimeRocks, Minerals and Events
ⓘ Alunite (youngest age)1.17 ± 0.16 Ma
ⓘ Alunite (oldest age)1.56 ± 0.29 Ma

This page contains all mineral locality references listed on This does not claim to be a complete list. If you know of more minerals from this site, please register so you can add to our database. This locality information is for reference purposes only. You should never attempt to visit any sites listed in without first ensuring that you have the permission of the land and/or mineral rights holders for access and that you are aware of all safety precautions necessary.


Gonzales, A. (1956) Geology of the Lepanto copper mine, Mankayan, Mountain Province. In: Copper Deposits of the Philippines (A.J. Kinkel Jr. et al,, eds.). Philippines Bureau of Mines, special publication 16, 17-50.

Rocks & Minerals: 22:23. A copper-gold mine located 108 km North of Baguio. Owned by the Mitsui Mining Co. (WWII). Produced 7,500 tons of Cu (1944).

Rocks & Minerals: 23:320

Bureau of Mines Mineral Trade Notes (Nov, 1947)

Anthony, Bideaux, Bladh, Nichols: "Handbook of Mineralogy", Vol. 1, 1990.

CLAVERIA R J R (2001) Mineral Paragenesis of the Lepanto Copper and Gold and the Victoria Gold Deposits, Mankayan Mineral District, Philippines, - Resour Geol, 51(2), pp.97-106.

Jeffrey W. Hedenquist, Antonio Arribas, and T. James Reynolds (1998) Evolution of an intrusion-centered hydrothermal system; Far Southeast-Lepanto porphyry and epithermal Cu-Au deposits, Philippines. Economic Geology; July 1998; v. 93; no. 4; p. 373-404

Deyell, C.L. and Hedenquist, J.W. (2011): Trace element geochemistry of enargite in the Mankayan district, Philippines. Economic Geology 106, 1465-1478.

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