Silver Elephant Reports 106.7 Million Oz Indicated and 13.1 Million Oz Inferred Silver Mineral Resource Estimate for the Pulacayo Project
Silver Elephant Mining Corp. announced an NI43-101 compliant Mineral Resource Estimate for its Pulacayo silver-lead-zinc project in Bolivia, effective October 13, 2020. The estimate reveals an Indicated Resource of 106.7 million oz silver, 1,384.7 million lbs zinc, and 693.9 million lbs lead, alongside an Inferred Resource of 13.1 million oz silver, 122.8 million lbs zinc, and 61.9 million lbs lead. The company has invested over US$30 million in the project since 2006. A detailed technical report will be filed within 45 days.
- Indicated resource of 106.7 million oz silver, enhancing asset value.
- Total resource investment exceeds US$30 million, indicating strong commitment.
- Inferred resource of 13.1 million oz silver may lead to future exploration opportunities.
- None.
VANCOUVER, BC / ACCESSWIRE / October 13, 2020 / Silver Elephant Mining Corp. ("Silver Elephant" or "the Company") (TSX:ELEF, OTCQX:SILEF, Frankfurt:1P2N) announces the results of a National Instrument 43-101 ("NI43-101") compliant Mineral Resource Estimate for the Pulacayo silver-lead-zinc project ("Pulacayo Project") in Bolivia. The Pulacayo Project consists of the Pulacayo Deposit and Paca Deposit (7km north of Pulacayo deposit). The project is 107 km northeast of Sumitomo Corporation's San Cristobal silver mine, 171 km southwest of New Pacific's Silver Sands discovery, and 139 km north of Pan American Silver Corp.'s San Vicente silver mine.
The Mineral Resource Estimate has an effective date of October 13, 2020 and includes an Indicated Mineral Resource of 106.7 million oz of silver, 1,384.7 million pounds of zinc, and 693.9 million pounds of lead, and an Inferred Mineral Resource of 13.1 million oz of silver, 122.8 million pounds of zinc and 61.9 million pounds of lead. Silver Elephant's wholly owned Bolivian subsidiary has invested over US
The Mineral Resource Estimate was prepared by Mercator Geological Services Limited ("Mercator") under supervision of Matthew Harrington, P. Geo., who is an independent Qualified Person as defined under NI 43-101. A technical report documenting the Mineral Resource Estimate will be filed by the Company within 45 days. A contained metal summary based on the Mineral Resource Estimate for the Pulacayo Project is reported below in Table 1.
Table 1: Pulacayo Project Mineral Resource Estimate Summary of Total Contained Metal - Effective October 13, 2020**
Zone | Category | Rounded Tonnes | Ag Moz | Zn Mlbs | Pb Mlbs | *AgEq Moz |
Open Pit Constrained | Indicated | 47,380,000 | 101.0 | 1,365.0 | 687.5 | 202.0 |
Inferred | 4,165,000 | 8.0 | 80.3 | 53.5 | 14.3 | |
Out-of-Pit | Indicated | 660,000 | 5.7 | 19.6 | 6.4 | 6.5 |
Inferred | 900,000 | 5.2 | 42.4 | 8.3 | 7.4 | |
Total: | Indicated | 48,040,000 | 106.7 | 1,384.7 | 693.9 | 208.5 |
Inferred | 5,065,000 | 13.1 | 122.8 | 61.9 | 21.7 |
** Accompanying notes for the Mineral Resource Estimate are presented below with Table 3.
The Pulacayo Deposit Mineral Resource Estimate is based on estimates of Pit-Constrained and Out of Pit Mineral Resources, details of which are presented below in Table 2. These estimates are based on 73,016 metres of diamond drilling (244 surface and 42 underground drill holes). Table 3 presents the Pit- Constrained Paca Deposit Mineral Resource Estimate. This estimate is based on results of 104 diamond drill holes and 6 reverse circulation drill holes totaling 19,916 meters completed between 2002 and 2020.
Table 2: Pulacayo Deposit Combined Pit-Constrained and Out-of-Pit Mineral Resource Estimate - Effective Date October 13, 2020**
Cut -off Grade | Zone | Category | Rounded Tonnes | Ag g/t | Zn % | Pb % | Ag Moz | Zn Mlbs | Pb Mlbs | *AgEq Moz | *AgEq g/t |
50 Ag g/t | Oxide In-Pit | Indicated | 1,090,000 | 125 | 4.4 | ||||||
Inferred | 25,000 | 60 | 0.0 | ||||||||
30 *AgEq g/t | Sulfide In-Pit | Indicated | 24,600,000 | 76 | 1.63 | 0.70 | 60.1 | 884.0 | 379.6 | 123.4 | 156 |
Inferred | 745,000 | 82 | 1.79 | 0.61 | 2.0 | 29.4 | 10.0 | 3.9 | 164 | ||
100 *AgEq g/t | Sulfide Out-of-Pit | Indicated | 660,000 | 268 | 1.35 | 0.44 | 5.7 | 19.6 | 6.4 | 6.5 | 307 |
Inferred | 900,000 | 179 | 2.14 | 0.42 | 5.2 | 42.4 | 8.3 | 7.4 | 257 | ||
Total: | Indicated | 26,350,000 | 70.2 | 903.7 | 386.0 | 133.4 | |||||
Inferred | 1,670,000 | 7.2 | 71.8 | 18.4 | 11.4 |
** Accompanying notes for the Mineral Resource Estimate are presented below with Table 3.
Table 3: Paca Deposit Pit-Constrained Mineral Resource Estimate - Effective Date October 13, 2020**
Cut -off Grade | Zone | Category | Rounded Tonnes | Ag g/t | Zn % | Pb % | Ag Moz | Zn Mlbs | Pb Mlbs | *AgEq Moz | *AgEq g/t |
50 Ag g/t | Oxide In-Pit | Indicated | 1,095,000 | 185 | 6.5 | ||||||
Inferred | 345,000 | 131 | 1.5 | ||||||||
30 *AgEq g/t | Sulfide In-Pit | Indicated | 20,595,000 | 46 | 1.07 | 0.67 | 30.5 | 485.8 | 304.2 | 70.2 | 106 |
Inferred | 3,050,000 | 46 | 0.76 | 0.65 | 4.5 | 51.1 | 43.7 | 9.2 | 94 | ||
Total: | Indicated | 21,690,000 | 37 | 485.8 | 304.2 | 70.2 | |||||
Inferred | 3,395,000 | 6 | 51.1 | 43.7 | 9.2 |
**Notes:
1. Mineral Resources were prepared in accordance with NI 43-101, the CIM Definition Standards (2014) and CIM MRMR Best Practice Guidelines (2019).
2. *Ag Eq. = Silver Equivalent (Recovered) = (Ag g/t*
3. Metal prices of US
4. Pit-Constrained Mineral Resources are defined for each deposit within optimized pit shells with average pit slope angles of 45⁰. The Pulacayo Deposit Mineral Resource Estimate was optimized at a 12.3:1 strip ratio and the Paca Deposit Mineral Resource Estimate was optimized with at a 4.3: strip ratio.
5. Base-case sulfide zone pit optimization parameters include: mining at US
6. Base-case oxide zone pit optimization parameters include: mining at US
7. Pit-constrained sulphide zone Mineral Resources are reported at a cut-off grade of 30 g/t Ag Eq. within the optimized pit shells and pit-constrained oxide zone Mineral Resources are reported at a cut-off grade of 50 g/t Ag within the optimized pit shells. Cut-off grades reflect total operating costs used in pit optimization and are considered to define reasonable prospects for eventual economic extraction by open pit mining methods.
8. Out of Pit Mineral Resources are external to the optimized pit shells and are reported at a cut-off grade of 100 g/t Ag Eq. They are considered to have reasonable prospects for eventual economic extraction using conventional underground methods such as long hole stoping based on a mining cost of
9. "Total" Mineral Resources for the Pulacayo Deposit Combined Pit-Constrained and Out-of-Pit Mineral Resource Estimate is the tonnage-weighted average summation of Pit-Constrained and Out-of-Pit Pulacayo Mineral Resources.
10. "Total" Mineral Resources for the Pulacayo Project Mineral Resource Estimate is the tonnage-weighted average summation of total Pulacayo Deposit and Paca Deposit Mineral Resources.
11. Mineral Resources were estimated using Ordinary Kriging methods applied to 1 m downhole assay composites capped at 2,300 g/t Ag,
12. Bulk density was interpolated using Ordinary Kriging methods for Pulacayo Mineral Resources. An average bulk density of 2.32 g/cm3 or 2.24 g/cm3 was applied to Paca Mineral Resources based on grade domain solid models.
13. Mineral Resources may be materially affected by environmental, permitting, legal, title, taxation, sociopolitical, marketing, or other relevant issues.
14. Mineral Resource tonnages have been rounded to the nearest 5,000; totals may vary due to rounding.
There are no known legal, political, environmental, or other risks identified by the Company at the October 13, 2020 effective date that would materially affect potential future development of the Pulacayo Project.
Pulacayo Project maps are available at www.silverelef.com.
Pulacayo Deposit
The Pulacayo and Paca Deposits are interpreted to be low-to-intermediate sulphidation epithermal deposits.
The Pulacayo Deposit occurs within the Tertiary age Pulacayo volcanic dome complex that consists of older sedimentary rocks of the Silurian Quenhua Formation and the intruding andesitic volcanic rocks of the Rothchild and Megacristal units. Mineralization hosted by volcanic rocks can be tens of meters in thickness and typically consists of discrete veins plus stockworks of narrow veins and veinlets that occur within argillic alteration host rock envelopes. Veins are commonly banded in texture and can contain semi-massive to massive sulphides. The primary minerals of economic importance at Pulacayo are tetrahedrite, galena and sphalerite. There are also silver sulfosalts and native silver which contribute to deposit silver grades. Mineralization is controlled by an east-west oriented normal fault system which links two northeast trending, steeply dipping, regional strike slip faults.
Historic Pulacayo mine production was predominantly from the Tajo vein system (TVS) which extends over a strike length of more than 2.5 km and down dip 1,000 meters. Resource drilling spans 1.4 km mineralized strike and extends down dip 400 meters from the surface. It covered an area that's approximately
The sensitivity analysis shown in Table 4 and Table 5 illustrates various pit-constrained grade-tonnage scenarios for the Pulacayo deposit based on a range of cut-off grades. Table 6 shows sensitivity analysis for out-of-pit grade tonnage scenarios.
Table 4: Pulacayo Deposit Pit-Constrained Cut-Off Grade Sensitivity Report for Oxide Zone
Cut -off Grade | Category | Rounded Tonnes | Ag g/t | Zn % | Pb % | Ag Moz | Zn Mlbs | Pb Mlbs | *AgEq Moz | AgEq g/t |
30 Ag g/t | Indicated | 1,760,000 | 92 | 5.2 | ||||||
Inferred | 35,000 | 55 | 0.1 | |||||||
45 Ag g/t | Indicated | 1,220,000 | 116 | 4.6 | ||||||
Inferred | 30,000 | 58 | 0.1 | |||||||
90 Ag g/t | Indicated | 615,000 | 171 | 3.4 | ||||||
Inferred | 0 | |||||||||
200 Ag g/t | Indicated | 185,000 | 250 | 1.5 | ||||||
Inferred | 0 |
Note: Cut-off grade for pit-constrained oxide Mineral Resources is 50 g/t Ag.
Table 5: Pulacayo Deposit Pit-Constrained Cut-Off Grade Sensitivity Report for Sulfide Zone
Cut -off Grade | Category | Rounded Tonnes | Ag g/t | Zn % | Pb % | Ag Moz | Zn Mlbs | Pb Mlbs | *AgEq Moz | AgEq g/t |
30 AgEq g/t | Indicated | 24,600,000 | 76 | 1.63 | 0.7 | 60.1 | 884 | 379.6 | 123.4 | 156 |
Inferred | 745,000 | 82 | 1.79 | 0.61 | 2 | 29.4 | 10 | 3.9 | 164 | |
45 AgEq g/t | Indicated | 23,715,000 | 78 | 1.67 | 0.72 | 59.5 | 873.1 | 376.4 | 122 | 160 |
Inferred | 735,000 | 83 | 1.81 | 0.61 | 2 | 29.3 | 9.9 | 3.9 | 166 | |
90 AgEq g/t | Indicated | 13,700,000 | 121 | 2.17 | 0.99 | 53.3 | 655.4 | 299 | 100 | 227 |
Inferred | 290,000 | 154 | 3.62 | 0.97 | 1.4 | 23.1 | 6.2 | 2.9 | 312 | |
200 AgEq g/t | Indicated | 5,385,000 | 249 | 2.75 | 1.54 | 43.1 | 326.5 | 182.8 | 66.3 | 383 |
Inferred | 180,000 | 230 | 4.57 | 1.22 | 1.3 | 18.1 | 4.8 | 2.5 | 426 | |
400 AgEq g/t | Indicated | 1,860,000 | 387 | 3.62 | 2.25 | 23.1 | 148.4 | 92.3 | 33.8 | 565 |
Inferred | 105,000 | 297 | 5.29 | 1.46 | 1 | 12.2 | 3.4 | 1.8 | 521 |
Note: Resource Estimate cut-off grade bolded.
Table 6: Pulacayo Deposit Out-of-Pit Cut-Off Grade Sensitivity Report for Sulfide Zone
Cut -off Grade | Category | Rounded Tonnes | Ag g/t | Zn % | Pb % | Ag Moz | Zn Mlbs | Pb Mlbs | *AgEq Moz | AgEq g/t |
100 AgEq g/t | Indicated | 660,000 | 268 | 1.35 | 0.44 | 5.7 | 19.6 | 6.4 | 6.5 | 307 |
Inferred | 900,000 | 179 | 2.14 | 0.42 | 5.2 | 42.4 | 8.3 | 7.4 | 257 | |
150 AgEq g/t | Indicated | 530,000 | 321 | 1.3 | 0.49 | 5.5 | 15.2 | 5.7 | 6 | 354 |
Inferred | 680,000 | 220 | 2.25 | 0.46 | 4.8 | 33.7 | 6.9 | 6.6 | 300 | |
200 AgEq g/t | Indicated | 435,000 | 359 | 1.41 | 0.53 | 5 | 13.5 | 5.1 | 5.5 | 394 |
Inferred | 505,000 | 260 | 2.37 | 0.54 | 4.2 | 26.4 | 6 | 5.6 | 343 | |
250 AgEq g/t | Indicated | 350,000 | 397 | 1.53 | 0.59 | 4.5 | 11.8 | 4.6 | 4.9 | 435 |
Inferred | 375,000 | 309 | 2.14 | 0.64 | 3.7 | 17.7 | 5.3 | 4.6 | 381 | |
300 AgEq g/t | Indicated | 290,000 | 429 | 1.63 | 0.64 | 4 | 10.4 | 4.1 | 4.4 | 468 |
Inferred | 310,000 | 327 | 2.23 | 0.72 | 3.3 | 15.2 | 4.9 | 4 | 403 | |
350 AgEq g/t | Indicate |
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