Sierra Metals discovers a significant new high grade zone at its Yauricocha mine in Peru

 
  • Thickest high-grade sulfide intercepts in the 60 year history of the mine adjacent to existing underground operations
  • Announces investor conference call and webcast to review drill results

 

Drill hole highlights include:

    Hole ESP-10:   1.1% Cu, 4.9% Zn, 2.2% Pb, 0.25 gpt Au, 61.2 gpt Ag over 70.6m
    Hole ESP-14:   3.2% Cu, 1.7% Zn, 0.4% Pb, 1.01 gpt Au, 48.5 gpt Ag over 69.2m
    Hole ESP-15:   1.8% Cu, 3.2% Zn, 1.4% Pb, 0.32 gpt Au, 61.5 gpt Ag over 70.0m 

TORONTO, Jan. 28, 2016 /CNW/ - Sierra Metals Inc. (TSX: SMT) (BVL: SMT) ("Sierra Metals" or "the Company") today announced the discovery of a new high grade sulfide zone, referred to as the "Esperanza" zone, located 400 metres north of the central mine area, along strike from current mining activities. The discovery comes as part of ongoing drill testing of priority targets at its Yauricocha Mine located 150km east southeast of Lima in the Yauricocha Mining District (Cordillera Occidental), Peru.

The Esperanza zone has returned the thickest sulfide intercepts in the 60 year mining history at Yauricocha. Hole ESP-14 returned a length weighted average of 3.2% Cu, 1.7% Zn, 0.4% Pb, 1.01 gpt Au, 48.5 gpt Ag over 69.2 metres, hole ESP-15 returned a length weighted average of 1.8% Cu, 3.2% Zn, 1.4% Pb, 0.32 gpt Au, 61.5 gpt Ag over 70.0 metres and hole ESP-10 returned a length weighted  average of 1.1% Cu, 4.9% Zn, 2.2% Pb, 0.25 gpt Au, 61.2 gpt Ag over 70.6 metres. The mineralization is hosted by a thick sequence of marble and consists of sulfide replacement and variably altered copper-magnetite skarn (chalcopyrite, bornite, chalcocite +/- native copper) with extensive lead and zinc sulfide replacement.  

The area was identified as a high priority target adjacent to and along strike from the current underground mining activity. To the end of December 2015, a total of 15 holes (total of 3,922.8 metres) were drilled through the target area from the 870 and 920 level of the mine (607 metres and 657 metres below surface respectively). All holes intersected the zone with the exception of ESP-11 which tested the upper limit of the zone. Drilling to date demonstrates the zone has a strike length of at least 240 metres, has been successfully tested to a depth of 170 metres below the 870 level and is open along strike at depth. The majority of this zone appears to be located below the 870 level however additional drilling is required to define the upper limit of the zone. There are currently two drills operating on the 870 level that are focused on delineation and expansion of the Esperanza zone as it is a priority to fast track this material into the production schedule. Underground development has been initiated to support additional drill locations for further exploration and delineation of the zone. Assays received to date for all holes are summarized as length weighted composite intervals in Table 1, below.

"The discovery of the Esperanza zone demonstrates the untapped potential close to the existing mine workings at Yauricocha" stated Matthew Wunder, Vice President Exploration of Sierra Metals. "Intercepts such as returned in ESP-10, ESP-14 and ESP-15 are not common in mineral exploration and suggests that we are closing in on a more productive part of the mineralizing system and may lead to the source of the hydrothermal system. There is reasonable potential to expand the Esperanza zone at depth and along strike to the north as these areas have never been drill tested. We look forward to an exciting future exploring the Yauricocha Mine and district."

"Esperanza is the most important discovery in the history of the Yauricocha mine and in the history of Sierra Metals" stated Mark Brennan, President and CEO of Sierra Metals.  "Esperanza is unique due to its high-grade copper, silver, and zinc sulfide intercepts, along with its exceptionally wide thickness of its mineralized zones, and its proximity to existing mine infrastructure. We are working towards accessing part of the orebody as early Q3 of 2016 which would have a positive impact on head grades in the second half of 2016 as well as on the Company's cash flow."

He continued, "Unlocking Yauricocha's potential through new discoveries such as the Esperanza zone are a key part of our growth strategy. While we continue to improve existing mine operations and production capabilities, we are very excited by this discovery and look forward to continuing to unlock value through further brownfields discoveries."

Table 1 - Length Weighted Composite Intervals

Hole

From

To

Metres

Ag
(gpt)

Pb

(%)

Cu

(%)

Zn

(%)

Au
(gpt)

Zone
Name

ESP-01

83.2

86.3

3.1

229.2

21.0

0.2

24.2

0.24


ESP-01

101.2

104.1

2.9

165.4

17.3

0.2

24.8

0.62


ESP-01

186.0

192.1

6.1

45.4

0.3

0.0

0.9

1.43


ESP-01

291.5

318.5

27.0

19.7

0.2

1.2

0.3

0.81

Esp











ESP-02

205.6

207.3

1.7

78.7

6.5

0.1

11.1

0.44


ESP-02

304.3

313.3

9.0

42.2

0.3

1.2

1.1

0.67

Esp











ESP-03

121.7

141.6

19.9

28.5

0.3

0.4

0.6

0.21

Esp











ESP-04

13.8

46.5

32.7

28.5

4.4

0.3

8.8

0.26


    ESP-04   Incl.

17.8

24.0

6.2

64.4

8.3

0.1

16.5

0.33


    ESP-04   Incl.

31.0

45.0

14.0

28.4

4.7

0.6

9.7

0.36


ESP-04

61.5

63.9

2.4

100.5

5.2

0.2

11.8

0.24


ESP-04

185.0

204.2

19.2

26.0

0.4

0.7

1.3

0.24

Esp











ESP-05

106.2

111.2

5.0

84.4

1.4

0.6

2.5

0.45


ESP-05

125.0

153.0

28.0

71.7

0.6

3.7

1.4

0.87

Esp

    ESP-05   Incl.

125.0

137.0

12.0

143.7

1.4

4.8

3.0

0.90

Esp











ESP-06

109.6

151.3

41.7

108.0

0.2

2.0

0.4

0.60

Esp

    ESP-06   Incl.

109.6

114.5

4.9

505.0

0.3

8.9

0.6

1.22

Esp

    ESP-06   Incl.

140.0

145.0

5.0

148.9

0.4

4.1

1.1

0.61

Esp











ESP-07

59.2

61.0

1.8

292.4

7.4

0.9

19.2

0.34


ESP-07

116.8

120.7

3.9

60.0

5.0

0.4

14.0

0.11


ESP-07

136.8

148.0

11.2

4.6

0.1

0.2

1.2

0.09

Esp











ESP-08

132.0

158.8

26.8

26.8

0.1

1.2

0.3

0.60

Esp

    ESP-08   Incl.

132.0

147.0

15.0

28.0

0.2

1.9

0.4

0.74

Esp











ESP-09

112.5

154.0

41.5

68.4

4.3

1.5

5.1

0.19

Esp

    ESP-09   Incl.

115.0

133.0

18.0

49.2

9.0

0.2

9.4

0.11

Esp











ESP-10

71.0

77.8

6.8

82.2

3.6

0.8

13.3

0.16


ESP-10

92.2

162.8

70.6

61.2

2.2

1.1

4.9

0.25

Esp

    ESP-10   Incl.

92.2

102.0

9.8

84.9

5.4

0.2

12.0

0.10

Esp

    ESP-10   Incl.

113.05

121.0

7.95

168.2

7.7

2.1

14.4

0.41

Esp

    ESP-10   Incl.

129.2

135.0

5.8

97.0

0.2

5.4

0.7

0.52

Esp

    ESP-10   Incl.

156.4

162.8

6.4

75.2

1.4

1.6

4.4

0.54

Esp











ESP-11

No Significant Values

















ESP-12

146.0

153.8

7.8

47.3

3.9

0.1

6.2

0.19

Esp











ESP-13

132.4

140.5

8.1

54.6

0.3

0.0

0.7

0.25

Esp











ESP-14

53.7

57.0

3.3

438.3

0.6

8.1

2.4

0.26


ESP-14

125.0

194.2

69.2

48.5

0.4

3.2

1.7

1.01

Esp

    ESP-14   Incl.

125.0

134.0

9.0

85.8

2.6

2.3

10.5

0.39

Esp

    ESP-14   Incl.

152.8

166.0

13.2

45.6

0.0

3.7

0.0

0.43

Esp

    ESP-14   Incl.

171.0

194.2

23.2

73.2

0.0

6.0

0.1

1.89

Esp

ESP-14  and  Incl.

171.0

187.7

16.7

89.6

0.1

7.2

0.1

2.39

Esp











ESP-15

55.65

75.8

20.15

147.8

0.1

5.6

0.1

0.36


    ESP-15   Incl.

56.0

64.0

8.0

156.1

0.1

6.5

0.2

0.46


ESP-15

131.0

201.0

70.0

61.5

1.4

1.8

3.2

0.32

Esp

    ESP-15   Incl.

138.0

149.1

11.1

96.6

0.7

2.1

2.8

0.47

Esp

    ESP-15   Incl.

153.2

178.5

25.3

115.4

2.4

3.8

5.8

0.57

Esp

    ESP-15   Incl.

198.9

201.0

2.1

91.4

10.0

0.3

17.3

0.51

Esp

ESP-15

215.0

235.0

20.0

35.2

0.3

1.6

0.6

0.70

Esp

    ESP-15   Incl.

223.7

235.0

11.3

41.6

0.1

2.5

0.3

0.82

Esp

 

All reported intercepts are core length as further drilling is required to determine true thicknesses.

A plan map of the Yauricocha mine area is shown in Figure 1, Figure 2 is a plan map through the Esperanza zone at the 920 level and Figure 3, Figure 4 and Figure 5 are cross sections through the Esperanza zone (reference lines for the cross sections are located on Figure 2). A complete list of assays for the drill holes presented in this news release are available on the Sierra Metals website at: https://sierrametals.com/files/doc_news/2016/News-Release-Jan-28-2016-Individual-Assay-Table-for-Web-site-1130am-Jan-27th-2016.pdf

Conference Call Webcast

Sierra Metals' senior management will host a conference call on Tuesday, February 2, 2016 at 10:30 AM (E.S.T.) to discuss the Company's drill results at Esperanza.

Via Webcast:

A live audio webcast of the meeting will be available on the Company's website www.sierrametals.com or at:  http://event.on24.com/wcc/r/1126434/ACAD9C9D4973272BE4B28BD5C5942BB4

The webcast along with presentation slides will be archived for 180 days on www.sierrametals.com

Via phone:

For those who prefer to listen by phone, dial-in instructions are below. To ensure your participation, please call approximately five minutes prior to the scheduled start time of the call.

Participant Number (Toll Free Peru): 0800-53-840
Participant Number (Toll Free North America): (877) 201-0168 
Participant Number (International): (647) 788-4901
Conference ID: 40995275

Method of Analysis

Samples are prepared at the Yauricocha lab facilities at the Chumpe Mill, which is located on site. Drill core samples from the mine are assayed utilizing two procedures. Silver, lead, zinc and copper are assayed by atomic absorption. Gold is fire-assayed with an atomic absorption finish. Diamond drill core samples sent for analysis consist of half NQ size or BQ size drill core which is split on site.

Quality Control

The quality assurance-quality control (QA-QC) program employed by Sierra Metals has been described in detail in the NI-43-101 report for Yauricocha dated May 25, 2012, prepared by Gustavson Associates in Denver, which is available for review on Sedar. Standards and blanks are inserted into the sample stream and duplicate samples are sent to the ALS Peru S.A. lab (Chemex) in Lima as per internal quality control procedures. 

Qualfied Persons

The technical content of this news release has been approved by Matthew Wunder, B.Sc, P.Geo. and Qualified Person as defined in NI-43-101.

About Sierra Metals

Sierra Metals Inc. is a Canadian mining company focused on production of precious and base metals from its Yauricocha Mine in Peru, and its Bolivar Mine and Cusi Mine in Mexico. In addition, Sierra Metals is exploring several precious and base metals targets in Peru and Mexico. Projects in Peru include Adrico (gold), Victoria (copper-silver) and Ipillo (polymetallic) at the Yauricocha Property in the province of Yauyos and the San Miguelito gold properties in Northern Peru. Projects in Mexico include Bacerac (silver) in the state of Sonora and La Verde (gold) at the Batopilas Property in the state of Chihuahua.

The Company's shares trade on the Lima Stock Exchange (Bolsa de Valores de Lima) and on the TSX under the symbol "SMT".

Forward-Looking Statements

Except for statements of historical fact contained herein, the information in this press release may constitute "forward-looking information" within the meaning of Canadian securities law. Statements containing forward-looking information express, as at the date of this news release, the Company's plans, estimates, forecasts, projections, expectations or beliefs as to future events or results.  These statements reflect the Company's current views with respect to future events and are necessarily based upon a number of assumptions and estimates that, while considered reasonable by the Company, are inherently subject to significant business, economic, competitive, political and social uncertainties and contingencies. Actual results might differ materially from results suggested in any forward-looking statements. The Company assumes no obligation to update the forward-looking statements, or to update the reasons why actual results could differ from those reflected in the forward-looking statements unless required by securities laws applicable to the Company. Additional information identifying risks and uncertainties is contained in filings by the Company with the Canadian securities regulators, which filings are available at www.sedar.com.

SOURCE Sierra Metals Inc.

Image with caption: "Figure 1 - Plan View: Yauricocha Mine Area (CNW Group/Sierra Metals Inc.)". Image available at: http://photos.newswire.ca/images/download/20160128_C3668_PHOTO_EN_608003.jpg

Image with caption: "Figure 2 - Plan View: Esperanza Sulfide Zone (CNW Group/Sierra Metals Inc.)". Image available at: http://photos.newswire.ca/images/download/20160128_C3668_PHOTO_EN_608005.jpg

Image with caption: "Figure 3 – Cross Section: Esperanza Sulfide Zone - Cross Section 1 (CNW Group/Sierra Metals Inc.)". Image available at: http://photos.newswire.ca/images/download/20160128_C3668_PHOTO_EN_608007.jpg

Image with caption: "Figure 4 - Cross Section: Esperanza Sulfide Zone - Cross Section 2 (CNW Group/Sierra Metals Inc.)". Image available at: http://photos.newswire.ca/images/download/20160128_C3668_PHOTO_EN_608009.jpg

Image with caption: "Figure 5 – Cross Section: Esperanza Sulfide Zone - Cross Section 3 (CNW Group/Sierra Metals Inc.)". Image available at: http://photos.newswire.ca/images/download/20160128_C3668_PHOTO_EN_608011.jpg

For further information: regarding Sierra Metals, please visit www.sierrametals.com or contact: Mike McAllister, Director, Corporate Development, Sierra Metals Inc., (416) 366-7777, Email: info@sierrametals.com; Matthew Wunder, Vice President, Exploration Sierra Metals Inc., (416) 366-7777; Mark Brennan, President & CEO, Sierra Metals Inc., (416) 366-7777


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