Guanaceví Mine, Mexico

Guanacevi Mine

Overview

Acquisition Endeavour’s first mine, acquired in May 2004
Location 260 kilometres northwest of the city of Durango in the state of Durango
Access 4½ hours by state highway to the town of Guanaceví
Property Approximately 4,200 hectares in the fifth largest historic silver mining district in Mexico
Infrastructure State power grid; local labour, supplies, and services; company camp
Operations 3 mines feed a central, 1,200-tonne-per-day leach plant to produce doré bars
Geology Low-sulphidation epithermal veins are typically thousands of metres long, 600 metres deep, and 1 to 5 metres thick

 

2016 Production

  • 2.4 million ounces of silver 
  • 5,328 ounces of gold 
  • 2.8 million ounces of silver equivalent, at a 75:1 ratio 

Reserves and Resources (at December 31, 2016)

  • 5.0 million ounces of proven and probable silver
  • 24.6 million ounces of measured and indicated silver
  • 9.9 million ounces of inferred silver
  • 11,900 ounces of proven and probable gold
  • 56,600 ounces of measured and indicated gold
  • 19,800 ounces of inferred gold

Production Statistics

YEAR SILVER (oz) GOLD (oz) SILVER EQUIV. (oz)(1)
2016 2,364,045 5,328 2,763,645
2015 3,440,748 7,390 3,994,998
2014 3,587,639 7,641 4,160,714
2013 2,772,227 6,784 3,281,027
2012 2,512,943 7,874 3,103,493
2011 2,682,035 6,866 3,196,985
2010 2,449,000 6,036 2,901,700
2009 1,870,000 4,877 2,235,775
2008 1,858,000 3,788 2,142,100
2007 1,907,000 3,957 2,203,775
2006 1,350,000 2,493 1,536,975
2005 950,000 2,332 1,124,900
2004 350,000 650 398,750

(1)Gold converted to silver at a 75:1 ratio

Guanaceví is Endeavour’s first and richest silver mine, located 260 kilometres northwest of the city of Durango in the state of Durango. Access is by state highway and infrastructure includes the state power grid, local labour, supplies and services in the town of Guanaceví, and a company camp. The property covers approximately 4,100 hectares in the fifth largest historic silver mining district in Mexico. The district is characterized by low-sulphidation epithermal veins, typically thousands of metres long, up to 700 metres deep, and ranging from 1 to 10 metres thick.

Guanaceví is Endeavour’s highest grade and deepest silver mine. Since acquisition, Endeavour has discovered seven high-grade silver-gold ore bodies along a six kilometre length of the Santa Cruz vein, opened new mines, and completed plant modernization and expansion programs. Today three underground mines feed the central, 1,200 tonne-per-day plant that produces doré bars, with a total work force of about 550 employees and 350 contractors.

In 2016, the Guanaceví mine produced 2.4 million ounces of silver and 5,328 ounces of gold, totaling 2.8 million ounces of silver equivalent. Silver and gold production both fell below guidance due to lower throughput and grades, partially offset by higher recoveries.

 

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