Overview
Stage | Production |
Mine Type | Underground |
Commodities |
|
Processing |
- Flotation
- Leaching plant / circuit
|
Mine Life | 3.9 years (as of Jan 1, 2019) |
Source:
p. 50
Company | Interest | Ownership |
Fresnillo plc.
|
100 %
|
Indirect
|
Minera Mexicana La Ciénega SA de CV
|
100 %
|
Direct
|
Deposit Type
- Epithermal
- Vein / narrow vein
Summary:
The La Ciénega gold-silver veins are low-sulfidation, epithermal-type deposits related to a rhyolitic flow-dome complex. Ore deposits in the La Ciénega district consist of a series of subparallel, northwest– southeast-trending veins which are hosted in andesitic and rhyolitic rocks that belong to the Tertiary-age Upper and Lower Volcanic sequences. The veins are vertical to steeply dipping structures which consist of quartz, generally containing gold-silver and less than 10 percent combined lead, zinc, and copper sul-fide, and sulfosalt minerals. Supergene enrichment is present in the upper parts of the known ore shoots.
Production:
Commodity | Product | Units | 2019 | 2018 | 2017 | 2016 | 2015 | 2014 |
Gold
|
Metal
|
oz
| ......  | ......  | 71,947 | 72,851 | 85,662 | 108,211 |
Silver
|
Metal
|
oz
| ......  | ......  | ......  | ......  | ......  | ......  |
Zinc
|
Metal
|
t
| ......  | ......  | ......  | ......  | ......  | ......  |
Zinc
|
Concentrate
|
t
| ......  | ......  | ......  | ......  | ......  | ......  |
Lead
|
Metal
|
t
| ......  | ......  | ......  | ......  | ......  | ......  |
Lead
|
Concentrate
|
t
| ......  | ......  | ......  | ......  | ......  | ......  |
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Operational Metrics:
Metrics | 2019 | 2018 | 2017 | 2016 | 2015 | 2014 |
Tonnes milled
| ......  | ......  | ......  | 1,275 kt | 1,329 kt | 1,341 kt |
Daily milling capacity
| ......  | ......  | ......  | 4 kt | 4 kt | 4 kt |
Annual milling capacity
| ......  | ......  | ......  | 1,340 kt | 1,340 kt | 1,340 kt |
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Reserves at May 31, 2019:
Category | Tonnage | Commodity | Grade | Contained Metal |
Proven & Probable
|
5,248 kt
|
Gold
|
2.18 g/t
|
368 koz
|
Proven & Probable
|
5,248 kt
|
Silver
|
229 g/t
|
38,632 koz
|
Proven & Probable
|
5,248 kt
|
Zinc
|
1.27 %
|
66 kt
|
Proven & Probable
|
5,248 kt
|
Lead
|
0.77 %
|
40 kt
|
Measured
|
6,499 kt
|
Gold
|
3.8 g/t
|
794 koz
|
Measured
|
6,499 kt
|
Silver
|
164 g/t
|
34,247 koz
|
Measured
|
6,499 kt
|
Zinc
|
1.8 %
|
117 kt
|
Measured
|
6,499 kt
|
Lead
|
1.14 %
|
74 kt
|
Indicated
|
6,639 kt
|
Gold
|
1.62 g/t
|
345 koz
|
Indicated
|
6,639 kt
|
Silver
|
235 g/t
|
50,070 koz
|
Indicated
|
6,639 kt
|
Zinc
|
1.23 %
|
82 kt
|
Indicated
|
6,639 kt
|
Lead
|
0.76 %
|
50 kt
|
Measured & Indicated
|
13,137 kt
|
Gold
|
2.7 g/t
|
1,140 koz
|
Measured & Indicated
|
13,137 kt
|
Silver
|
200 g/t
|
84,316 koz
|
Measured & Indicated
|
13,137 kt
|
Zinc
|
1.51 %
|
199 kt
|
Measured & Indicated
|
13,137 kt
|
Lead
|
0.95 %
|
125 kt
|
Inferred
|
5,028 kt
|
Gold
|
2.16 g/t
|
349 koz
|
Inferred
|
5,028 kt
|
Silver
|
276 g/t
|
44,663 koz
|
Inferred
|
5,028 kt
|
Zinc
|
1.62 %
|
81 kt
|
Inferred
|
5,028 kt
|
Lead
|
0.9 %
|
45 kt
|
Corporate Filings & Presentations:
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Aerial view:
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