Overview
Stage | Production |
Mine Type | Underground |
Commodities |
|
Mining Method |
|
Production Start | ...  |
Mine Life | 4.2 years (as of Jan 1, 2021) |
Source:
p. 54, 278
Contractors
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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.
Summary:
Ciénega is a gold-silver mine located near the small community of Nuestra Señora de la Ciénega. Long-hole open stoping mining method is utilized at Ciénega.
Source:
Summary:

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Production:
Commodity | Product | Units | 2021 | 2020 | 2019 | 2018 | 2017 | 2016 |
Gold
|
Metal
|
oz
| ......  | ......  | ......  | 66,869 | 71,947 | 72,851 |
Silver
|
Metal
|
oz
| ......  | ......  | ......  | ......  | ......  | ......  |
Zinc
|
Metal
|
t
| ......  | ......  | ......  | ......  | ......  | ......  |
Zinc
|
Concentrate
|
kt
| ......  | ......  | ......  | ......  | ......  | ......  |
Lead
|
Metal
|
t
| ......  | ......  | ......  | ......  | ......  | ......  |
Lead
|
Concentrate
|
kt
| ......  | ......  | ......  | ......  | ......  | ......  |
Silver Equivalent
|
Metal
|
M oz
| ......  | | | | | |
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Operational Metrics:
Metrics | 2021 | 2020 | 2019 | 2018 | 2017 | 2016 |
Tonnes milled
| ......  | ......  | 1,329 kt | 1,324 kt | 1,302 kt | 1,275 kt |
Daily milling capacity
| ......  | ......  | 4 kt | 4 kt | 4 kt | 4 kt |
Annual milling capacity
| ......  | ......  | 1,340 kt | 1,340 kt | 1,340 kt | 1,340 kt |
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Reserves at May 31, 2021:
The cut-off grades for the Ciénega reserve vary between 240 and 326 g/t AgEq
The cut-off grade for Ciénega’s mineral resources varies between 200 and 284 g/t AgEq.
Category | Tonnage | Commodity | Grade | Contained Metal |
Probable
|
5,402 kt
|
Gold
|
1.9 g/t
|
331 koz
|
Probable
|
5,402 kt
|
Silver
|
199 g/t
|
34,604 koz
|
Probable
|
5,402 kt
|
Zinc
|
1.22 %
|
66 kt
|
Probable
|
5,402 kt
|
Lead
|
0.83 %
|
45 kt
|
Proven & Probable
|
5,402 kt
|
Gold
|
1.9 g/t
|
331 koz
|
Proven & Probable
|
5,402 kt
|
Silver
|
199 g/t
|
34,604 koz
|
Proven & Probable
|
5,402 kt
|
Zinc
|
1.22 %
|
66 kt
|
Proven & Probable
|
5,402 kt
|
Lead
|
0.83 %
|
45 kt
|
Measured & Indicated
|
10,786 kt
|
Gold
|
3.16 g/t
|
1,096 koz
|
Measured & Indicated
|
10,786 kt
|
Silver
|
227 g/t
|
78,692 koz
|
Measured & Indicated
|
10,786 kt
|
Zinc
|
1.9 %
|
205 kt
|
Measured & Indicated
|
10,786 kt
|
Lead
|
1.27 %
|
137 kt
|
Inferred
|
8,705 kt
|
Gold
|
1.97 g/t
|
551.27 koz
|
Inferred
|
8,705 kt
|
Silver
|
227 g/t
|
63,402 koz
|
Inferred
|
8,705 kt
|
Zinc
|
1.14 %
|
99 kt
|
Inferred
|
8,705 kt
|
Lead
|
0.63 %
|
55 kt
|
Corporate Filings & Presentations:
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