Powerpoint
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The Zacatecas Silver District located in central Mexico is one of the largest historic silver districts in the world with past production estimated at 1.2 billion ounces.
IMPACT has established itself as a key player in the Zacatecas Silver District. The Company holds 100% interest in 16 mineral concessions. These holdings represent potential ore feed for the 200 ton per day mill located in the area that IMPACT also has a 100% interest.
Infrastructure
Excellent with paved highways that run through the district along with road networks, electric power and a trained Mexican workforce.
PRODUCTION
The processing plant consists of a 200 tonnes-per-day (tpd) mill and flotation circuit. Before the Company acquired 100% interest in the mill, material was processed on a custom milling basis where local small scale miners truck their ore to the plant and are charged a flat rate to process it.
Since completing the purchase of the plant (see news release dated March 23rd, 2010), plans are to upgrade the plant and use it to increase IMPACT's presence in the Zacatecas Silver District. IMPACT is exploring opportunities with other companies in the District who own mineral concessions with in-ground mineral resources and/or historic surface mine dumps that can be processed at the Veta Grande plant on a joint venture or toll milling basis. IMPACT also intends to process historic surface mine dumps from its own concessions in the District and has been carrying out studies to evaluate some of these dumps.
EXPLORATION
Nueva Granada and Asturiana Concessions
The concessions cover most of the Nueva Granada vein which is part of the Veta Grande vein system. Historically, the Zacatecas Silver District has produced over 1 billion ounces of silver and the Veta Grande vein system was the largest producer in the district. Past production figures from the Nueva Granada mine are not available, but old plans indicate that it was mined along a length of 700m and to a depth of 150-200m.
The San Jose Vein crosses the concessions over a distance of 800m. Old mine workings and dumps mark the surface along its entire width. A total of six channel samples were collected from surface exposures of the vein and averaged 239g/t silver over 0.74m true width ("TW"), ranging to a high of 444g/t silver over 1.10m TW. Five old mine dumps were also sampled along the vein. Two samples were collected at each dump site. The average of the five sulphide-bearing samples was 407g/t silver, ranging to a high of 1,070g/t silver. The average of five sulphide-poor samples was 141g/t silver, ranging to a high of 390g/t silver.
The Armado Vein trends 100m west of and runs parallel to the San Jose Vein. It has been traced over a distance of 500m and is marked by old mine workings and dumps along its entire length. Channel samples collected from surface exposures of the vein located 130m apart assayed 237g/t silver over 1.92TW and 1,320g/t silver over 0.30mTW. Two samples were collected at an old mine dump on the vein located 400m to the north. A sulphide-bearing sample assayed 358g/t silver and a sulphide-poor sample assayed 247g/t silver.
Several splay veins branch off the main Armado Vein. A channel sample from a splay vein in the southern portion of the concessions assayed 188g/t silver over 1.04m TW. At this location, a sulphide-bearing sample from the old mine dump assayed 556g/t silver and a sulphide-poor sample assayed 54g/t silver.
In addition, the concessions contain about 30,000 tonnes of old mine dumps. In 2003, it was reported that 12,000 tonnes from these dumps were processed, returning an average grade of 220g/t silver. This material was processed in the Zacatecas plant which IMPACT controls through an option to purchase agreement.
Leo and El Milagro Concessions
The Leo and Milagro Concessions cover a splay off the major Canterra Vein in the southern part of the Zacatecas Silver District.
Cancer Concession
The Cancer Concession is located in the eastern part of the District and covers a 500m length of the historic Providencia Vein marked by numerous old mine workings.
Martin and Santo Cristo Concessions
The Martin and Santo Cristo Concessions are located near IMPACT's Cristian Concession where earlier sampling of old mine dumps returned 310g/t silver, 24.2% lead and 8.0% zinc from a high grade stockpile and 93g/t silver, 0.43% lead and 1.4% zinc from a low grade waste dump.
Cristian Concession
The Cristian mine, which last produced in 2003, still has its shaft hoisting equipment in place in anticipation of the recommencement of operations. IMPACT was not able to access the workings, but samples from surface dumps returned 310g/t silver, 24.2% lead and 8.0% zinc from a high grade stockpile and 93g/t silver, 0.43% lead and 1.4% zinc from a low grade waste dump.
San Pascual Concession
The San Pascual Mine last produced about 20 years ago. A representative sample of the dump around the shaft assayed 875g/t silver. A representative sample from the dump beside the nearby Pirul shaft assayed 525g/t silver.
IMPACT also owns a number of other concessions in the Zacatecas Silver District which are at an early stage of exploration.
News Releases
| March 23, 2010 |
Impact Silver Completes Purchase Of 200-TPD Mill At Zacatecas |
| July 03, 2008 |
Impact Announces Sale Of San Sabino Concession In Zacatecas |
| October 04, 2007 |
Impact Silver Announces Zacatecas Sampling Results |
| April 11, 2007 |
Impact Silver Announces Property Acquisitions In Zacatecas |
| December 14, 2006 |
Impact And Yale Add Another Property To Zacatecas Joint Venture |
| October 26, 2006 |
Test Milling At Zacatecas Processing Plant Commences |
| September 28, 2006 |
IMPACT Silver Announces Signing of Comprehensive Agreement for Veta Grande Silver Project |
Maps & Images
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