Orvana Reports Updated NI 43-101 for its Spanish Operation: Five Years Life of Mine Plus Additional 3.4 MT @ 3.8 G/T Gold in Inferred Resources

Orvana Reports Updated NI 43-101 for its Spanish Operation: Five Years Life of Mine Plus Additional 3.4 MT @ 3.8 G/T Gold in Inferred Resources

PR Newswire

TORONTO, Dec. 29, 2020

Highlights:

TORONTO, Dec. 29, 2020 /PRNewswire/ -- Orvana Minerals Corp. (TSX: ORV) (the "Company" or "Orvana") is pleased to report the completion of an updated Mineral Resource and Mineral Reserve estimate (the "MRMR Update") and life-of-mine plan (the "LOMP Update"), each completed in accordance with CIM Definition Standards (2014) and as incorporated by reference into National Instrument 43-101 – Standards of Disclosure for Mineral Projects ("NI 43-101"), for its Orovalle Operation ("Orovalle"), in Asturias, Spain.

Orvana retained Roscoe Postle Associates UK Ltd. (RPA), now part of SLR Consulting Ltd (SLR), an independent consulting firm, to prepare an independent NI 43-101 Technical Report on the Orovalle Operation (the "2020 Technical Report"). The purpose of the 2020 Technical Report is to incorporate the MRMR Update and LOMP Update, as at September 30, 2020, which will be filed under the Company's profile on www.sedar.com within 45 days from the date of this news release. The 2020 Technical Report replaces the previous Orovalle NI 43-101 Technical Report, dated September 26, 2014, and filed on SEDAR on September 29, 2014.

"Orvana's management team is extremely pleased with the updated Orovalle life of mine plan of five years. The Company's ability to continue to maintain a five-year life of mine plan since 2014 is the result of the execution of a successful exploration strategy, resulting in the Company being able to replenish depletion year-by-year."

Mr. Gavidia continued, "The Company is committed to an aggressive drill program at Orovalle by way of continued systematic infill and brownfield drilling programs with the aim to further extend the life of mine. Current Mineral Inferred Resources along with the recently released results of our latest brownfield drilling program, indicate a bright long term future for the operation at Orovalle. We are also optimistic that our promising greenfield exploration programs at Lidia and Ortosa-Godán, with drilling underway, will result in potential additional upside in the near future".

LOMP Update

In fiscal 2014, the Company engaged RPA to complete a technical report on El Valle Boinás and Carlés mines in accordance with NI 43-101 Standards of Disclosure. The 2014 technical report, "Technical Report on the El Valle Boinás-Carlés Operation, Asturias, Spain", dated September 26, 2014 (and previously filed under the Company's profile on www.sedar.com), reported a life of mine plan of five years, starting October 2014, with the first three years of mining at an average of 571,000 tonnes of ore per annum, followed by two years of oxide-only production at a reduced average rate of 243,000 tonnes of ore per annum. The 2014 Technical Report life of mine plan incorporated approximately 2.2 million tonnes of ore, with and estimated metal production of 282,000 ounces of gold, 24.2 million pounds of copper and 767,000 ounces of silver.

During the period commencing in October 2014 and ending in September 2020, Orovalle in fact produced 323,651 ounces of gold and 31.6 million pounds of copper, exceeding the 2014 estimated life of mine metal production by 15% in gold and 31% in copper.

RPA completed the LOMP Update based on Proven and Probable Mineral Reserves estimated as at September 30, 2020, as part of the MRMR Update. The planned production schedule consists of oxide and skarn ore to be mined from both the El Valle Boinás and Carlés mines at an average rate of 686,000 tpa for a period of five years. The total production schedule estimates 3.4 million tonnes of ore, containing an estimated 307,000 ounces of gold, 756,000 ounces of silver, and 27.6 million pounds of copper. In addition, the Inferred Mineral Resources are estimated to contain 410,000 ounces of gold and 24.8 million pounds of copper, providing potential opportunities to extend the operation life.

The following table shows the life of mine plan starting October 2020:

Item

Units

FY 2021

FY 2022

FY 2023

FY 2024

FY 2025

Total

Mill Feed







Tonnes

000 t

704

698

681

675

673

3,431

Gold Grade

g/t Au

2.64

2.93

2.68

2.90

2.75

2.78

Silver Grade

g/t Ag

8.24

9.76

6.68

4.88

4.55

6.86

Copper Grade

% Cu

0.42

0.47

0.33

0.32

0.28

0.36

Metal Production







Gold

000 oz Au

60

66

59

63

60

307

Silver

000 oz Ag

187

219

146

106

98

756

Copper

000 lb Cu

6,552

7,238

4,882

4,829

4,088

27,590

MRMR Update

The Company last published Mineral Resources and Reserves estimates for Orovalle as at September 30, 2019 in its annual information form dated December 20, 2019 (the "2019 AIF").

The following is a summary of the MRMR Update in the 2020 NI 43-101 Technical Report with more detailed information set forth in Table 1 and Table 2 below:

The MRMR Update follows the Canadian Institute of Mining, Metallurgy and Petroleum ("CIM") Definitions Standards for Mineral Resources and Reserves (2014) and the Technical Report has been completed in accordance with the Standards of Disclosure for Mineral Projects as defined by National Instrument 43-101. Mineral Resources that are not Mineral Reserves do not have demonstrated economic viability. The estimate of Mineral Reserves and Mineral Resources may be materially affected by environmental, permitting, legal, title, taxation, socio-political, marketing, or other relevant issues.

TABLE 1


MINERAL RESOURCES INCLUSIVE OF MINERAL RESERVES - SEPTEMBER 30, 2020
OROVALLE MINERALS S.L. – OROVALLE OPERATION


Measured Mineral Resources

Zone

Tonnes
(000 t)

Grade

Contained Metal

(g/t Au)

(g/t Ag)

(% Cu)

(000 oz Au)

(000 oz Ag)

(000 lb Cu)

Boinás Oxide

806

3.84

15.29

0.58

99

396

10,286

Boinás Skarn

2,146

2.69

16.54

0.78

186

1,141

36,741

Carlés

232

3.45

10.00

0.53

26

75

2,696

La Brueva








Total

3,184

3.04

15.75

0.71

311

1,612

49,723









Indicated Mineral Resources

Zone

Tonnes
(000 t)

Grade

Contained Metal

(g/t Au)

(g/t Ag)

(% Cu)

(000 oz Au)

(000 oz Ag)

(000 lb Cu)

Boinás Oxide

3,025

4.78

4.94

0.34

465

480

22,356

Boinás Skarn

398

2.78

17.82

0.75

36

228

6,591

Carlés

1,327

3.37

7.64

0.38

144

326

10,971

La Brueva








Total

4,749

4.22

6.77

0.38

644

1,034

39,918









Measured + Indicated Mineral Resources

Zone

Tonnes
(000 t)

Grade

Contained Metal

(g/t Au)

(g/t Ag)

(% Cu)

(000 oz Au)

(000 oz Ag)

(000 lb Cu)

Boinás Oxide

3,831

4.58

7.12

0.39

564

876

32,642

Boinás Skarn

2,544

2.70

16.74

0.77

221

1,370

43,332

Carlés

1,559

3.38

7.99

0.40

169

400

13,667

La Brueva








Total

7,934

3.74

10.38

0.51

955

2,646

89,641









Inferred Mineral Resources

Zone

Tonnes
(000 t)

Grade

Contained Metal

(g/t Au)

(g/t Ag)

(% Cu)

(000 oz Au)

(000 oz Ag)

(000 lb Cu)

Boinás Oxide

1,665

4.36

8.62

0.30

233

461

11,057

Boinás Skarn

348

2.85

18.51

0.74

32

207

5,698

Carlés

1,163

3.26

4.62

0.30

122

173

7,703

La Brueva

187

3.90

15.53

0.09

23.40

93.13

357.30

Total

3,362

3.80

8.64

0.33

410

934

24,816



Notes:


1.

CIM (2014) definitions were followed for Mineral Resources.

2.

Mineral Resources are estimated at a gold equivalent (AuEq) cut-off grade of 2.52 g/t AuEq
for Boinás oxide, 2.20 g/t AuEq for Boinás skarn,1.96 g/t AuEq for Carlés skarn, and 2.52 g/t
AuEq for La Brueva oxides.

3.

Mineral Resources are estimated using long term prices of US$1,700/oz Au, US$20/oz Ag,
and US$3.25/lb Cu.  A US$/€ exchange rate of 1.20/1.00 was used.

4.

Mineral Resources are inclusive of Mineral Reserves

5.

Crown pillars of 60 m and 40 m are excluded from the Mineral Resource below the El Valle
TSF and Boinás-East old pit, respectively.

6.

Unrecoverable material in exploited mining areas has been excluded from the Mineral Resource.

7.

Areas of contiguous blocks with volumes less than 500 m3 have been removed from the
Mineral Resource report to ensure Reasonable Prospects for Eventual Economic Extraction
(RPEEE).

8.

Numbers may not add due to rounding.

 

TABLE 2





MINERAL RESERVES - SEPTEMBER 30, 2020
OROVALLE MINERALS S.L. – OROVALLE OPERATION





Category

Tonnes

Grade

Contained Metal

(000 t)

(g/t Au)

(g/t Ag)

(% Cu)

(000 oz Au)

(000 oz Ag)

(000 lb Cu)

Proven

1,156

2.14

11.61

0.51

79

431

12,922

Probable

2,275

3.10

4.44

0.29

227

325

14,668

Proven and
Probable

3,431

2.78

6.86

0.36

307

756

27,590



Notes:


1.

CIM (2014) definitions were followed for Mineral Reserves.

2.

Mineral Reserves are estimated using AuEq break-even cut-off grades by zone, consisting of
3.35 g/t AuEq for Boinás oxides (D&F), 2.90 g/t AuEq for Boinás skarns (SLS), and 2.09 g/t
AuEq for Carlés skarn (SLS).  AuEq cut-offs are based on recent operating results for
recoveries, off-site concentrate costs and on-site operating costs.  AuEq factors are based
on metal prices, metallurgical recoveries, metal payables, and selling costs.

3.

Mineral Reserves are estimated using average long term prices of US$1,600/oz Au,
US$18/oz Ag, and US$3.00/ lb Cu.  A US$/€ exchange rate of 1.20/1.00 was used.

4.

A minimum mining width of 4 m was used.

5.

A no-mining standoff distance of 75m under the El Valle TSF and 42 m under the Boinás-East
old pit has been applied.

6.

A no-mining sterilisation zone of 10 m below mined out stopes and 5 m around waste filled
stopes has been applied.

7.

Numbers may not add due to rounding.

Qualified Persons

The scientific and technical information contained in this press release has been reviewed and approved: (i) in respect of the estimated Mineral Reserves and the LOMP Update by Rick C. Taylor, MAusIMM, CP., of RPA, and (ii) in respect of the estimated Mineral Resources by John Makin, MAIG., of RPA.  RPA is an independent mining consultant and each of Messrs. Taylor and Makin is a Qualified Person within the meaning of NI 43-101. Qualified Persons responsible for other sections of the Technical Report are Jack Lunnon, CGeol, EurGeol, Patrick Donlon, FAusIMM and Alessandra (Alex) Pheiffer, M.Sc., PrSciNat, EAPAN.

About Orvana Minerals
Orvana is a multi-mine gold-copper-silver company. Orvana's assets consist of the producing El Valle and Carlés gold-copper-silver mines in northern Spain and the Don Mario gold-silver property in Bolivia, currently in care and maintenance. Additional information is available at Orvana's website (www.orvana.com).

Cautionary Statements - Forward-Looking Information

Certain statements made herein constitute forward-looking statements or forward-looking information within the meaning of applicable securities laws ("forward-looking statements"). Any statements that express or involve discussions with respect to predictions, expectations, beliefs, plans, projections, objectives, assumptions, potentials, future events or performance (often, but not always, using words or phrases such as "believes", "expects", "plans", "estimates", "intends" or "anticipates" or stating that certain actions, events or results "may", "could", "would", "might", "will" or "are projected to" be taken or achieved) are not statements of historical fact, but are forward-looking statements.

The forward-looking statements herein relate to, among other things, the continuing development of the exploration programs at the Lidia Project and at Carlés, the potential impact of the COVID-19 on the Company's business and operations, including its ability to continue operations; the Company's ability to manage challenges presented by COVID-19; the accounting treatment of COVID-19 related matters; Orvana's ability to prevent and/or mitigate the impact of COVID-19 and other infectious diseases at or near the Company's mines and support the sustainability of its business including through the development of crisis management plans, increasing stock levels for key supplies, monitoring of guidance from the medical community, and engagement with local communities and authorities; Orvana's ability to achieve improvement in free cash flow; the potential to extend the mine life of El Valle and Don Mario beyond their current life-of-mine estimates including specifically, but not limited to in the case of Don Mario,  the processing of the mineral stockpiles and the reprocessing of the tailings material; Orvana's ability to optimize its assets to deliver shareholder value; the Company's ability to optimize productivity at Don Mario and El Valle; estimates of future production, operating costs and capital expenditures; mineral resource and reserve estimates; statements and information regarding future feasibility studies and their results; future transactions; future metal prices; the ability to achieve additional growth and geographic diversification, including without limitation, the ability to complete the acquisition of the Taguas Property; future financial performance, including the ability to increase cash flow and profits; and future financing requirements and mine development plans.

Forward-looking statements are necessarily based upon a number of estimates and assumptions that, while considered reasonable by the Company as of the date of such statements, are inherently subject to significant business, economic and competitive uncertainties and contingencies as particularly set out in the notes accompanying the Company's most recently filed financial statements. The estimates and assumptions of the Company contained or incorporated by reference in this news release, which may prove to be incorrect, include, but are not limited to,  the various assumptions set forth herein and in Orvana's most recently filed Management's Discussion & Analysis and Annual Information Form in respect of the Company's most recently completed fiscal year (the "Company Disclosures") or as otherwise expressly incorporated herein by reference as well as: there being no significant disruptions affecting operations, whether due to labour disruptions, supply disruptions, power disruptions, damage to equipment or otherwise; permitting, development, operations, expansion and acquisitions at El Valle and Don Mario being consistent with the Company's current expectations; political developments in any jurisdiction in which the Company operates being consistent with its current expectations; certain price assumptions for gold, copper and silver; prices for key supplies being approximately consistent with current levels; production and cost of sales forecasts meeting expectations; the accuracy of the Company's current mineral reserve and mineral resource estimates; and labour and materials costs increasing on a basis consistent with Orvana's current expectations.

A variety of inherent risks, uncertainties and factors, many of which are beyond the Company's control, affect the operations, performance and results of the Company and its business, and could cause actual events or results to differ materially from estimated or anticipated events or results expressed or implied by forward looking statements. Some of these risks, uncertainties and factors include fluctuations in the price of gold, silver and copper; the need to recalculate estimates of resources based on actual production experience; the failure to achieve production estimates; variations in the grade of ore mined; variations in the cost of operations; the availability of qualified personnel; the Company's ability to obtain and maintain all necessary regulatory approvals and licenses; the Company's ability to use cyanide in its mining operations; risks generally associated with mineral exploration and development, including the Company's ability to continue to operate the El Valle and/or Don Mario and/or ability to resume long-term operations at the Carlés Mine; the Company's ability to successfully implement a sulphidization circuit and ancillary facilities to process the current oxides stockpiles at Don Mario; the Company's ability to acquire and develop mineral properties and to successfully integrate such acquisitions; the Company's ability to execute on its strategy; the Company's ability to obtain financing when required on terms that are acceptable to the Company; challenges to the Company's interests in its property and mineral rights; current, pending and proposed legislative or regulatory developments or changes in political, social or economic conditions in the countries in which the Company operates; general economic conditions worldwide; and the risks identified in the Company's disclosures. This list is not exhaustive of the factors that may affect any of the Company's forward-looking statements and reference should also be made to the Company's Disclosures for a description of additional risk factors.

Any forward-looking statements made herein with respect to the anticipated development and exploration of the Company's mineral projects are intended to provide an overview of management's expectations with respect to certain future activities of the Company and may not be appropriate for other purposes.

Forward-looking statements are based on management's current plans, estimates, projections, beliefs and opinions and, except as required by law, the Company does not undertake any obligation to update forward-looking statements should assumptions related to these plans, estimates, projections, beliefs and opinions change. Readers are cautioned not to put undue reliance on forward-looking statements.

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