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 October 12, 2011
Zinco Reports On Drilling Results For Jesus Maria, Cuale District, Jalisco Vms Project, Mexico

 Zinco Mining Corporation (TSX-V: ZIM, FRA: 61Z) is pleased to announce that it has obtained complete assay results for 579.5 meters of HQ diamond core drilling in holes ZIM43 to ZIM47 from Jesus Maria, a past-producing open pit mine in the Cuale VMS District, Mexico. The primary objective of this stage of core drilling was to clarify the geological context of RC drill hole ZIM30, located 60 m east of the open pit, that returned values of 5.01% zinc, 1.39% lead, 0.21% copper, 14 g/t silver and 72 ppb gold across 41.8 meters.

Overall, Zinco is very pleased with the results from this stage of drilling for the following reasons:
  • The valuable reverse circulation (RC) intercept of ZIM30 was confirmed and expanded with core drilling.

  • It provided the geological context for the zinc rich mineralization. Geologically, zinc-rich massive sulfide occurs in fine-grained sediments under a rhyolite flow-dome. The geometry of this geology can be used to guide further drilling.

  • A new zone of precious-metal rich mineralization was discovered in the flow-dome, above the base-metal rich horizon.

  • Clear lithogeochemical vectors for zinc rich mineralization (molar K/Al of about 1) and feeder faults (molar Mg/Al > 0.75) are present and can be used to help model the hydrothermal system and target further exploration drilling.
Core hole ZIM45, collared 5 m southeast of ZIM30 and drilled northerly (essentially a twin of ZIM30) returned values of 3.1% zinc, 0.54% lead, 0.14% copper, 9 g/t silver and 45 ppb gold across 31 meters. ZIM46, drilled 30 meters west of ZIM45 and oriented northeasterly, returned values of 4.74% zinc, 1.10% lead, 0.21% copper, 13 g/t silver and 91 ppb gold across 31.5 meters.

Geologically, zinc-rich mineralization at Jesus Maria occurs below a phenocryst-poor rhyolite flow-dome characterized by complex flow banding and chaotic flow-breccias on the order of 150 meters thick. Below the flow-dome, there are about 40 meters of thinly laminated to medium bedded fine tuffs and cherts that host the zinc-rich massive sulfide. The mineralization consists of honey yellow to red sphalerite with galena, chalcopyrite and minor pyrite. These metalliferous fine sediments grade downwards into about 70 meters of coarse-grained, thickly bedded lapilli tuffs. Below the tuffs, the rock consists of phenocryst poor, devitrified rhyolite with abundant lithophysae, spherulites and perlitic fractures. Devitrified rhyolite also underlies the San Juan and Naricero VMS deposits in the Cuale District.

The flow-dome above the zinc-rich massive sulfide horizon also contains gold and silver rich mineralization. Specifically, Hole ZIM43, collared 45 m northeast of ZIM30, intercepted 6 meters of 36 g/t Ag and 0.78 g/t Au in rhyolite flow breccia cross-cut by calcite veining. Similarly, Hole ZIM44, collared 70 meters north of ZIM30 intercepted 24 meters of 66 g/t silver and 0.38 g/t gold, but without any calcite veins. Neither of these two holes was drilled deep enough to cut through the rhyolite flow dome into the underlying zinc-rich sediments.

Hole ZIM47, drilled 65 meters east of ZIM30 and oriented easterly, probably crossed a major fault marked by a diorite dike in the upper part of the hole. Although it did eventually intercept the cherty sediments that host massive sulfides in Holes ZIM30, 45 and 46, the alteration is characterized by massive black chlorite with chalcopyrite and pyrite, minerals typically found in feeder faults or alteration pipes of VMS deposits. From the analytical data, the chlorite alteration is apparent from high molar Mg/Al ratios in excess of 0.75 (with lower values reflecting partial rather than complete alteration of rhyolite to Mg rich chlorite). By way of contrast, molar Mg/Al ratios of the ore-grade intercept in ZIM46 are all less than 0.09. However, molar K/Al ratios for the intercept of ZIM46 are all close to a value of 1, a number that implies potassic alteration in the form of K-feldspar could be present. K-feldspar is not especially common in the VMS environment, but has been documented in the footwall to Eskay Creek, northern British Columbia. Sericite, a more typical alteration mineral in VMS systems, including Cuale, has a K/Al ratio of 1/3.

Further work, including drilling, is planned at Jesus Maria and other promising targets on Zinco's concessions.

Table 1. HQ diamond drill hole intercepts from Jesus Maria, Cuale VMS District, Jalisco, Mexico

Hole ID

From
(m)

To
(m)

Interval
(m)

Silver
(g/t)

Gold
(ppb)

Copper
(ppm)

Lead
(ppm)

Zinc
(ppm)

ZIM43

42.00

48.00

6.00

36

778

9

41

242

ZIM44

8.00

32.00

24.00

66

383

67

289

232

ZIM45

68.00

99.00

31.00

9

45

1373

5354

31346

ZIM46

77.00

89.00

12.00

29

89

427

4951

9387

ZIM46

89.00

121.00

32.00

9

27

93

1473

3275

ZIM46

121.00

152.50

31.50

13

91

2066

10738

47422

ZIM47

63.00

64.00

1.00

11

48

1073

6065

8047

ZIM47

124.00

140.00

16.00

1

6

28

10

3539

ZIM47

150.00

152.00

2.00

5

8

4736

20

149


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.
 
 

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