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Sales of goods (Tables) - Sociedad Minera Cerro Verde S.A.A. [Member]

12 Months Ended

Dec. 31, 2017

Disclosure of detailed information about revenue by geographic region [Text Block]

The following table shows net sales by geographic region based on the final destination port:

		For the year ended			For the year ended			For the year ended
		December 31, 2017			December 31, 2016			December 31, 2015
		US$(000)			US$(000)			US$(000)

Asia			2,416,826			1,865,346			770,272
Europe			314,092			161,844			65,648
North America			287,174			213,002			79,244
South America (primarily Peru)			193,174			150,648			204,206
			3,211,266			2,390,840			1,119,370
Less: Royalty contributions (see Note 2(k))			(8,335)			(6,686)			(3,753)

Total net sales			3,202,931			2,384,154			1,115,617

Disclosure of detailed information about revenue by type of products [Text Block]

This item is made up as follows:

			For the year ended					For the year ended						For the year ended
			December 31, 2017					December 31, 2016						December 31, 2015
			Pounds(000)		US$(000)			Pounds(000)		US$(000)				Pounds(000)			US$(000)

Copper in concentrate			979,243			2,702,508			995,386			1,967,052			440,071			794,197
Copper cathode			84,679			241,725			109,128			247,431			104,279			259,830
Other (primarily silver and molybdenum concentrate)						267,033						176,357						65,343

Subtotal Sales						3,211,266						2,390,840						1,119,370
Less: Royalty contributions (see Note 2(k))						(8,335)						(6,686)						(3,753)

Total net sales						3,202,931						2,384,154						1,115,617