|January 08, 2018|
IMPACT Silver provides Exploration Update on Santa Teresa gold target, Royal Mines of Zacualpan, Central Mexico
|IMPACT Silver Corp. ("IMPACT" or the "Company") is pleased to provide an exploration update on a new and developing gold target within the Royal Mines of Zacualpan Silver District in central Mexico. Although work will be continuing on the silver-gold veins that have provided five centuries of historical production at the Zacualpan District, the work at Santa Teresa represents a new initiative for IMPACT's exploration team to explore different sorts of mine making targets.
Santa Teresa is located in the Valle de Oro sub-district of dominantly gold veins located four kilometers southwest of IMPACT's producing Guadalupe mill and immediately to the south of IMPACT's past producing Nochebuena (silver) and Carlos Pacheco (gold) mines. To the northeast is the large Coronas mine, one of the oldest and better known past producers of the Zacualpan district.
To date over a thousand silver and/or gold bearing veins have been recognized through IMPACT'S exploration efforts in the district (such veins having at least one assay sample exceeding 100 g/t silver or 1.0 g/t gold). As well some 5,000 old mine or exploration workings have been located and catalogued. These old workings, along with geological maps, geophysical surveys, 75,000 soil samples and some 48,500 rock samples form the basis of a GIS Database (Geographic Information System) that has been utilized for the past ten years to "organically discover" production tonnage for IMPACT's Guadalupe and Capire mills.
Roughly half of the veins hosting the better gold grades have extremely low sulphide contents. Native gold or electrum would be the most likely host minerals and would likely be amenable to gravity concentration methods. These veins are most abundant in the southwestern portion of the Santa Teresa area where the density of these north-south striking veins is the highest of the entire Zacualpan district. In addition, this portion of the Santa Teresa area contains the only known outcrops of an Eocene Feldspar Porphyry within the Zacualpan district, which are the only known magmatic intrusive rocks on the property. Fifty-two porphyry outcrops have been mapped over a one kilometer square area with the southern and western boundaries currently undefined. Previously this rock type had been observed as clasts within the gold-bearing portions of the Nochebuena-type hydrothermal breccias of the Nochebuena and Carlos Pacheco mines. These Eocene Feldspar Porphyries are thought to be similar to the Tilzapotla Rhyolite, an enigmatic intrusive stock located midway between the Taxco and Zacualpan Districts that is considered to be the heat source responsible for the formation of the Zacualpan Southeast and Taxco veins. It has been dated at 32 million years, the same age as a vein in the Taxco District, and by inference a similar age has been assigned to the Zacualpan veins. Associated with this Feldspar Porphyry are the highest gold/silver ratios for the entire Zacualpan District, again suggesting an environment of localized, very high heat flow with the Feldspar Porphyry the heat engine for the formation of these gold veins.
Brecciation and silicification of the older host rocks immediately surrounding this Feldspar Porphyry is a common feature, suggesting the formation of a brecciated cupula similar the 5.0 Moz Kidston gold deposit of Australia and a number of gold deposits in Nevada. Rock samples from this Feldspar Porphyry itself return very low values for precious and base metals, however silicified and brecciated portions of the host rock adjacent to and above this Feldspar Porphyry have numerous high gold values (up to 17.95 g/t) presenting a potentially very intriguing bulk tonnage exploration target.
Brian V. Hall, M.Sc., P.Geo., a Qualified Person under the meaning of Canadian National Instrument 43‑101, has approved the technical content of this news release. A map of the Santa Teresa area is attached to this news release or can be found on the Company website at www.IMPACTSilver.com.
About IMPACT Silver:
On behalf of IMPACT Silver Corp.
"Frederick W. Davidson"
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Neither TSX Venture Exchange nor its Regulation Services Provider (as that term is defined in the policies of the TSX Venture Exchange) accepts responsibility for the adequacy or accuracy of this release.
Forward-Looking and Cautionary Statements
The Company's decision to place a mine into production, expand a mine, make other production related decisions or otherwise carry out mining and processing operations, is largely based on internal non-public Company data and reports based on exploration, development and mining work by the Company's geologists and engineers. The results of this work are evident in the discovery and building of multiple mines for the Company and in the track record of mineral production and financial returns of the Company since 2006. Under NI43‑101 the Company is required to disclose that it has not based its production decisions on NI43‑101‑compliant mineral resource or reserve estimates, preliminary economic assessments or feasibility studies, and historically such projects have increased uncertainty and risk of failure.
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