La Parrilla Silver Mine
La Parrilla Land Package
The La Parrilla Silver Mine is 100% owned by First Majestic Silver Corp. It is comprised of mining concessions that total 69,440 hectares, which makes it the Company's single largest land package. The property has known mineralization throughout, with a complex of five underground mines surrounding the mill including Los Rosarios, La Rosa, San Jose, Quebradillas and San Marcos.
The property began operations in October 2004 at a rate of 180 tpd. It recently underwent a fifth major development project that further expanded the mill to 2,000 tpd (from the previous 850 tpd). The expansion was deemed commercially effective on March 1, 2012 and the new parallel 1,000 tpd flotation and 1,000 tpd cyanidation circuits became fully operational. At the newly designed run rate of 2,000 tpd, La Parrilla will produce in the range of 3.3 to 3.4 million ounces of silver equivalent annually.
La Parrilla is conveniently located 65 km southeast of Durango in the western part of the Mexican Altiplano at 23 degrees 44'16" north latitude and 104 degress 06'26" west longitude. Nearby towns include San Jose de La Parrilla, 1.5 km to the north of the property, and the larger Vicente Guerrero, which is 16 km to the southeast. Strong infrastructure also exists in the area as the mine is in close proximity (4 km) to the main highway linking Durango and Zacatecas.
Mining & Milling Operations
Production at the La Parrilla Silver Mine consists of three separate products: silver doré bars and lead concentrate, which can also contain silver and zinc concentrate.
As a continuation of the expansion program at La Parrilla, an intensive underground development program is also under construction. This includes a new ramp system and a new production shaft. Upon completion, all underground mining areas will be connected and ore haulage will be done via underground trains that will tram the ore from the ore passes to the new shaft. This investment is expected to dramatically improve efficiencies and mine logistics and reduce cash costs.
Sulfide ball mill at La Parrilla
Fully automated control systems
Ore conveyer belt
|La Parrilla Production Results||2012||2011||2010|
|Ore Processed/ Tonnes Milled||679,788||362,947||303,869|
|Average Silver Grade (g/tonne)||170||200||209|
|Total Silver Ounces Produced||2,876,810||1,793,728||1,548,832|
|Gold Ounces Produced||923||344||413|
|Pounds of Lead Produced||13,240,889||7,888,943||4,280,167|
|Pounds of Zinc Produced||4,952,899||178,767||363,288|
|Total Production - Ounces Silver Equivalent||3,487,392||2,057,172||1,813,788|
|Underground Development (m)||20,606||13,242||7,545|
|Diamond Drilling (m)||26,204||14,447||1,581|
Local Geology, Mineralization & Ore Types
Among the several large vein systems located within the La Parrilla property boundaries, the Company has historically focused its exploration efforts on the Quebradillas, Vacas, San Marcos, La Blanca mines and the Cerro Santiago, Viboras, San Nicolás and Sacramento areas.
The region surrounding Durango and Zacatecas is known for its world-class silver deposits, hence its designation as the 'Mexico Silver Belt'; however, large tonnages of lead, zinc, copper and gold have also been mined in the region.
For more detailed geological information readers are encouraged to review the Company's most recent NI 43-101 Technical Report (PDF).
Reserves & Resources
*For La Parrilla, internal estimates use metal prices at $1,688.63/oz-Au, $31.96/oz-Ag, $1.05/lb-Pb, and $0.93/lb-Zn and based on internal Qualified Person results.
The Reserves/Resources inventories are reported in NI 43-101 Technical Reports published periodically by the Company. The complete report can be viewed in the Reserves/Resources section or on SEDAR.
Cross-Section of the Los Rosarios Mine
Mines and Projects
La Parrilla Geologic Model
Surrounding Mining Districts