Zinco Mining Reports on Drilling Results for San Juan, Cuale District, Jalisco VMS Project
The main objectives of the core drilling program at San Juan were to: (i) expand on reverse-circulation drill hole intercept ZIM9 that returned results of 95 g/t silver, 0.96% zinc, 0.44% lead, 0.01% copper and 56 ppb Au across 194.82 m (the largest continuous drill hole intercept of silver-rich mineralization ever intercepted on Zinco's VMS Project), and (ii) model the geological context of the mineralization, work that could not be done as reliably with reverse-circulation chip samples.
Overall, the drilling results confirm the following:
- of 16 holes (both RC and HQ core) drilled at San Juan, 14 holes contai potentially economic intercepts of silver-rich mineralization,
- the intercepts occur in an area 280 meters long by 240 meters wide that remains open to the east and west,
- 14 of the potentially economic silver-rich intercepts are longer than 14 meters (core-length), and
- 7 intercepts are longer than 50 meters.
Geologically, silver-rich mineralization at San Juan is hosted in and peripheral to a quartz-feldspar porhyritic (QFP) rhyolite flow dome complex that intrudes weakly porphyritic, devitrified rhyolite overlain by tuffaceous sediments. In detail:
- The 'basement' in the San Juan deposit area consists of weakly quartz- porphyritic rhyolite with abundant spherulites, lithophysae, perlitic fractures and other devitrification textures. This unit can contain sulfide mineralization in vugs caused by devitrification, and in fractures.
- The devitrified rhyolite is overlain by normally graded, fining upwards mass-flow units of rhyolite lapilli tuff to fine tuff, locally with black argillite and syn-sedimentary pyrite. Massive sulfides can occur in this unit, generally close to the QFP rhyolite.
- The basement and the tuffs are intruded by a strongly porphyritic rhyolite with characteristic dipyramidal quartz as well as feldspar phenocrysts (QFP). This unit has peperitic (brecciated) boundaries with the surrounding sediments, a feature that is typical of submarine rhyolite flow-dome complexes where they intrude unconsolidated sediments. The upper contact of the QFP with the surrounding sediment is marked by gossanous zones of semi-massive sulfide a few centimeters to a few meters thick. Internally, the QFP is marked by abundant microscopic perlite and spherulites that are preferentially replaced by silver-rich and base metal sulfides as well as quartz, barite and clay minerals. Sulfides also occur in randomly oriented stock work veinlets, mainly without quartz, but commonly marked by clay in vein selvedges. All silver-rich intercepts longer than 50 meters at San Juan occur in this QFP.
Overall, the core-drilling program has expanded the bulk-tonnage silver-lead-zinc potential of San Juan and provided geological controls on the mineral deposit that will help define the placement of drill holes for the next drilling program. In particular, on the basis of these results, the Company intends to conduct further exploration of the upper and marginal portions of the QFP, the host rock to the most valuable and silver-rich parts of the San Juan deposit.
Table 1. HQ diamond drill hole intercepts from San Juan, Cuale VMS District, Jalisco, Mexico
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Hole ID From To Interval Silver Gold Copper Lead Zinc
(m) (m) (m) (g/t) (ppb) (ppm) (ppm) (ppm)
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ZIM34 21.00 67.00 46.00 114 51 118 3739 3672
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ZIM34 79.00 81.00 2.00 14 73 304 7775 19124
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ZIM35 6.00 69.00 63.00 134 63 112 6011 12378
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ZIM35 91.00 94.00 3.00 13 235 439 8052 14893
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ZIM36 11.50 42.00 30.50 64 54 55 738 175
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ZIM36 61.00 62.00 1.00 111 195 87 1586 552
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ZIM37 23.00 42.00 19.00 36 97 190 606 195
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ZIM37 89.00 90.00 1.00 7 1000 37 365 1032
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ZIM37 109.00 110.00 1.00 18 316 963 2849 6105
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ZIM38 9.00 143.35 134.35 25 50 93 4351 9860
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ZIM39 21.35 76.00 54.65 136 53 83 4939 7503
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ZIM39 82.00 83.00 1.00 22 21 250 4467 13896
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ZIM39 98.00 99.00 1.00 23 43 126 21174 31163
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ZIM39 106.00 108.00 2.00 14 66 685 1466 38878
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ZIM40 15.00 106.75 91.75 45 34 55 2779 6031
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ZIM41 21.40 82.00 61 60 41 306 6064 12422
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ZIM41 99.00 100.00 1.00 26 62 54 10800 12490
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ZIM41 106.00 109.00 3.00 20 35 51 4581 10786
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ZIM42 6.00 24.00 18.00 111 88 308 1122 1316
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ZIM42 47.17 48.22 1.05 25 32 592 8903 19855
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Qualified Person
This press release was reviewed by Michelle Robinson, M.A.Sc., P.Eng., a Director of Zinco Mining Corporation, who acts as Zinco's Qualifed Person as defined by NI 43-101. Geochemical assaying done by Zinco was completed by Acme Analytical Laboratories according to the procedures described in Zinco's News Release (NR 2011.05) dated 17 August 2011.
Further information about the Jalisco VMS Project can be reviewed on Zinco's website www.zincomining.com
ON BEHALF OF THE BOARD,
David Elgee
PRESIDENT
Certain information regarding the Company including management's assessment of future plans and operations, may constitute forward-looking statements under applicable securities laws and necessarily involve risks associated with mining exploration and development, volatility of prices, currency fluctuations, imprecision of resource estimates, environmental and permitting risks, access to labour and services, competition from other companies and ability to access sufficient capital. As a consequence, actual results may differ materially from those anticipated in the forward-looking statements.
NEITHER THE 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 NEWS RELEASE.
Contacts:
Zinco Mining Corporation
David Elgee, President
(604) 507-2181
(604) 507-2187 (FAX)
www.zincomining.com