The El Tigre historic mine district is located in Sonora, Mexico and lies at the northern end of the Sierra Madre silver and gold belt which hosts many epithermal silver and gold deposits, including Dolores, Santa Elena and Las Chispas at the northern end. In 1896, gold was first discovered on the property in the Gold Hill area and mining started with the Brown Shaft in 1903. The focus soon changed to mining high-grade silver veins in the area with much of the production coming from the El Tigre vein. Underground mining on the El Tigre vein extended 1,450 meters along strike and was mined on 14 levels to a depth of 450 meters. By the time the mine closed in 1938, it is reported to have produced a total of 353,000 ounces of gold and 67.4 million ounces of silver from 1.87 million tons (Craig, 2012). The average grade mined during this period was over 2 kilograms silver equivalent per ton.
Silver Tiger’s district scale El Tigre concessions are approximately 35 kilometers long and comprises 28,414 hectares, including 25 kilometers of the prolific Sierra Madre trend. The El Tigre silver and gold deposit is related to a series of high-grade epithermal veins controlled by a north-south trending structure cutting across the andesitic and rhyolitic tuffs of the Sierra Madre Volcanic Complex within a broad silver and gold mineralized prophylitic alternation zone called the El Tigre Formation which can be up to 150 meters wide. The veins dip steeply to the west and are typically 1 meter wide but locally can be up to 5 meters in width. The veins, structures and mineralized zones outcrop on surface and have been traced for 5.3 kilometers along strike in our browfields exploration area. Historical mining and exploration activities focused on a 1.5 kilometer portion of the southern end of the deposits, principally on the El Tigre, Seitz Kelly and Sooy veins. The unexplored Caleigh, Fundadora and Protectora exposed veins continue north for more than 3 kilometers and are the target of Silver Tiger’s current exploration.
The El Tigre Property lies at the northern end of the Sierra Madre gold belt which hosts many epithermal gold and silver deposits including Dolores, Santa Elena and Chispas at the northern end. In 1896, gold was first discovered on the property in the Gold Hill area and mining started with the Brown Shaft in 1903. The focus soon changed to mining high-grade silver veins in the area with much of the production coming from the El Tigre vein. Underground mining on the El Tigre vein extended 1,450 meters along strike and mined on 14 levels to a depth of 450 meters. By the time the mine closed in 1938, it is reported to have produced a total of 353,000 ounces of gold and 67.4 million ounces of silver from 1.87 million tons (Craig, 2012). The average grade mined during this period was over 2 kilograms silver equivalent per ton.
History, Production and Geology of the El Tigre District
Geology of El Tigre District - R.T. Mishler, 1920
Drilling at the Historic El Tigre Mine
- Hole ET-10-031 - 92.9 meters of 0.80 g/t gold equivalent consisting of 0.39 g/t gold and 30.4 g/t silver
- Hole ET-10-033 - 48.6 meters of 1.46 g/t gold equivalent consisting of 0.61 g/t gold and 63.9 g/t silver
- Hole ET-13-051 - 127.0 meters of 2.16 g/t gold equivalent consisting of 1.80 g/t gold and 27.5 g/t silver
- Hole ET-13-066 - 97.7 meters of 1.80 g/t gold equivalent consisting of 0.90 g/t gold and 67.5 g/t silver
- Hole ET-13-075 - 104.0 meters of 1.01 g/t gold equivalent consisting of 0.53 g/t gold and 36.1 g/t silver
- Hole ET-13-077 - 139.1 meters of 1.02 g/t gold equivalent consisting of 0.94 g/t gold and 6.6 g/t silver
- Hole ET-16-083 - 121.1 meters of 1.38 g/t gold equivalent consisting of 1.02 g/t gold and 27.0 g/t silver
- Hole ET-16-085 - 89.7 meters of 1.02 g/t gold equivalent consisting of 0.62 g/t gold and 30.3 g/t silver
- Hole ET-16-092 - 95.6 meters of 1.35 g/t gold equivalent consisting of 1.17 g/t gold and 13.2 g/t silver
- Hole ET-16-096 - 74.2 meters of 0.96 g/t gold equivalent consisting of 0.80 g/t gold and 11.6 g/t silver
- Hole ET-16-108 - 110.0 meters of 0.79 g/t gold equivalent consisting of 0.6 g/t gold and 14.5 g/t silver
- Hole ET-16-109 - 20.4 meters of 3.23 g/t gold equivalent consisting of 0.4 g/t gold and 212 g/t silver
- Hole ET-16-110 - 102.0 meters of 0.67 g/t gold equivalent consisting of 0.5 g/t gold and 13.4 g/t silver
- Hole ET-17-133 - 67.6 meters of 1.49 g/t gold equivalent consisting of 1.24 g/t gold and 19.1 g/t silver
- Hole ET-17-135 - 37.7 meters of 0.78 g/t gold equivalent consisting of 0.62 g/t gold and 12.4 g/t silver
- Hole ET-17-140 - 9.0 meters of 1.86 g/t gold equivalent consisting of 0.18 g/t gold and 125.5 g/t silver, including 1.5 meters of 9.54 g/t gold equivalent consisting of 0.43 g/t gold and 683.2 g/t silver
Drilling on the Northern Vein Extensions
- Hole ET-17-144 - 31.5 meters of 2748.4 g/t silver equivalent consisting of 1990.9 g/t silver and 10.1 g/t gold, including 0.85 meters of 10,128.9 g/t silver equivalent consisting of 7,338.9 g/t silver and 3.72 g/t gold in the Caleigh Vein
- Hole ET-144 - 1.5 meters of 1109.1 g/t silver equivalent consisiting of 1107.3 g/t silver and 0.024 g/t gold in the Protectora Vein
- Hole ET-17-145 - 0.8 meters of 3647.9 g/t silver equivalent consisting of 2830.4 g/t silver and 10.9 g/t gold in the Caleigh Vein
- Hole ET-17-148 - 0.50 meters of 2984.35 g/t silver equivalent consisting of 2247.1 g/t silver and 9.83 g/t gold in the Caleigh Vein
- Hole 156 - 0.3 meters grading 1,284.0 g/t AgEq from 82 meters to 82.3 meters consisting of 752 gpt Ag and 7.09 gpt Au. in the Caleigh Vein
- Hole 158 - 0.7 meters grading 1,121.6 g/t AgEq from 90 meters to 90.7 meters consisting of 815 gpt Ag and 4.09 gpt Au in the Caleigh Vein
- Hole 163 - 0.5 meters grading 2,049.1 g/t AgEq from 16.9 meters to 17.4 meters consisting of 1,782 gpt Ag and 3.56 gpt Au and a second intercept of 0.5 meters grading 1,440.6 gpt AgEq from 51.9 meters to 52.4 meters consisting of 1,374 gpt Ag and 0.89 gpt Au in the Protectora Vein
- Hole 164 - 0.5 meters grading 1,592.5 g/t AgEq from 17 meters to 17.5 meters consisting of 805 gpt Ag and 10.50 gpt Au in the Protectora Vein
* The true width has not been calculated for the intercepts, but true width is generally estimated at 75-90% of drilled width. The gold equivalent ratio is based on a gold-to-silver price ratio of 75:1.
El Tigre Cross Section 6650
El Tigre Cross Section 6675
El Tigre Resource Estimate
After acquiring El Tigre, Silver Tiger drilled 12,500 meters to define the halo of near surface gold mineralization around the mined high-grade veins of the historic El Tigre Mine. This allowed Silver Tiger to deliver a maiden resource estimate for the El Tigre Property to a depth of 150 meters containing indicated resources of 661,000 gold equivalent ounces at 0.77 g/t (21 g/t silver and 0.51 g/t gold) and inferred resources of 341,000 gold equivalent ounces at 1.59 g/t (88 g/t silver and 0.52 g/t gold). The complete National Instrument 43-101 technical report is available on the company’s website below under Mineral Resource Estimate and Technical Report and on SEDAR under the company’s profile.
NI 43-101 Technical Report and Updated Mineral Resource Statement on the El Tigre Project, Sonora, Mexico
Silver Tiger reported an independent Mineral Resource Estimate for the El Tigre Property completed by P&E Mining Consultants Inc. ("P&E") which is detailed in the table below. The El Tigre Mineral Resource Estimate includes extensions of the historical El Tigre and Seitz Kelly Veins1, as well as the mineralized breccia halo around the El Tigre Vein. The Fundadora Mineral Resource Estimate includes the Aquila, Fundadora, Protectora and Caleigh Veins2.
El Tigre Project Mineral Resource Estimate (1-11)
Resource Area | Class | AuEq g/t Cut-Off |
Tonnes (000's) |
Ag g/t |
Ag ozs (000's) |
Au g/t |
Au ozs (000's) |
Au Eq g/t | AuEq ozs (000's) |
---|---|---|---|---|---|---|---|---|---|
El Tigre Constrained Pit1 |
Indicated | 0.20 | 25,170 | 15 | 11,906 | 0.51 | 416 | 0.69 | 559 |
Inferred | 0.20 | 2,791 | 12 | 1,093 | 0.38 | 34 | 0.52 | 47 | |
El Tigre Underground1 |
Indicated | 1.50 | 207 | 156 | 1,041 | 0.46 | 3 | 2.33 | 16 |
Inferred | 1.50 | 11 | 82 | 29 | 1.27 | 0 | 2.26 | 1 | |
Fundadora Constrained Pit2 |
Indicated | 0.20 | 451 | 167 | 2,428 | 0.93 | 14 | 2.94 | 43 |
Inferred | 0.20 | 1,774 | 150 | 8,554 | 0.69 | 39 | 2.49 | 142 | |
Fundadora Underground2 |
Indicated | 1.50 | 80 | 118 | 306 | 1.03 | 3 | 2.45 | 6 |
Inferred | 1.50 | 2,003 | 140 | 9,044 | 0.60 | 38 | 2.28 | 147 | |
Sub Total Indicated | 0.20, 1.50 | 25,908 | 19 | 15,681 | 0.52 | 436 | 0.75 | 624 | |
Sub Total Inferred | 0.20, 1.50 | 6,579 | 89 | 18,720 | 0.52 | 111 | 1.59 | 337 | |
El Tigre Tailings3 |
Indicated | 0.37 | 939 | 78 | 2,345 | 0.27 | 8 | 1.21 | 37 |
Inferred | 0.37 | 101 | 79 | 254 | 0.27 | 1 | 1.22 | 4 | |
Total Indicated | 0.20,0.37,1.50 | 26,847 | 21 | 18,026 | 0.51 | 444 | 0.77 | 661 | |
Total Inferred | 0.20,0.37,1.50 | 6,680 | 88 | 18,974 | 0.52 | 112 | 1.59 | 341 |
Notes to El Tigre Project Mineral Resource Estimate:
(1) El Tigre Deposit Mineral Resources are comprised of the El Tigre and Seitz Kelly Veins.
(2) Fundadora Deposit Mineral Resources are comprised of the Aquila, Fundadora, Protectora and Caleigh Veins.
(3) El Tigre Tailings Deposit Mineral Resources are comprised of the tailings from the former El Tigre operation.
(4) Mineral Resources are reported within a constraining pit shell.
(5) The Mineral Resource Estimate is reported in accordance with the Canadian Securities Administrators
National Instrument 43-101 and has been estimated using the CIM “Estimation of Mineral Resources
and Mineral Reserves Best Practice Guidelines and CIM “Definition Standards for Mineral Resources
and Mineral Reserves.
(6) Au:Ag ratio = ($1250/$17)/(70% Ag Rec/80% Au Rec)= 84:1 Therefore, AuEq=(Ag/84) + Au
(7) Mineral Resources in this estimate are based on approx. two year trailing average metal prices of
US$1,250 oz Au and US$17 /oz Ag, estimated process recoveries 80% Au and 70% Ag, US$5.70/t
process cost and US$0.80/t G&A cost. Mining costs of US$1.55/t for open pit and $45/t for underground
and tailings mining costs of US$5.50/t were used to derive the respective Mineral Resource Estimate
AuEq cut-offs of 0.20 g/t and 1.5 g/t and 0.37g/t. Pit optimization slopes were 50 degrees
(8) The Mineral Resource Estimate uses drill hole data available as of September 1, 2017.
(9) Totals may not add correctly due to rounding.
(10) An Inferred Mineral Resource has a lower level of confidence than that applying to an Indicated Mineral
Resource and must not be converted to a Mineral Reserve. It is reasonably expected that the majority of
Inferred Mineral Resources could be upgraded to Indicated Mineral Resources with continued
exploration.
(11) Mineral Resources which are not Mineral Reserves do not have demonstrated economic viability. The
estimate of Mineral Resources may be materially affected by environmental, permitting, legal, title,
taxation, sociopolitical, marketing or other relevant issues.
Photos and Videos
© 2021 Silver Tiger Metals Inc.|TSXV:SLVR, OTCQX:SLVTF|Disclaimer
Disclaimer:
User Agreement
The following terms and conditions, along with all other terms and legal notices located on this https://silvertigermetals.com website (collectively, "Terms"), govern your use of this https://silvertigermetals.com website (the "Website"). If you do not understand and agree to be bound by all Terms, do not use this Website. Your use of this Website at any time constitutes a binding agreement by you to abide by these Terms.
Certain material found on this Website is protected by copyright. Certain names, graphics, logos, icons, designs, words, titles or phrases on this Website may constitute trade names, trademarks or service marks of Silver Tiger Metals Inc. ("Silver Tiger") or other entities. Trademarks may be registered in Canada and in other countries, as applicable. The display of trademarks on pages at this Website does not imply that a licence of any kind has been granted.
Although care has been taken in preparing and maintaining the information and materials contained on this Website, they are provided on an "as is" basis, without warranty of any kind, either express or implied, with respect to the accuracy or completeness of the information and Silver Tiger does not assume any responsibility or liability whatsoever for publishing them herein. In using this Website, you agree that Silver Tiger shall not be liable for any damages whatsoever (including indirect, incidental, special, punitive or consequential damages and loss of profits, opportunities or information) arising from (a) your use of or reliance on information contained on this Website; (b) any inaccuracy or omission in such information or failure to keep the information current; (c) use of any third-party web sites linked or referred to in this Website; (d) any delays, inaccuracies or errors in, or in the transmission of, any stock price quotes or historical price data; (e) any Internet software used in connection with this Website or computer viruses or other destructive programs encountered as a result of using this Website; and (f) any other matter connected with the Website, even if Silver Tiger is made aware of the possibility of such claims, damages or losses.
This Website contains links to, or feeds from, sites that Silver Tiger does not maintain. Silver Tiger assumes no responsibility for the contents of third-party sites accessed through links on, or otherwise incorporate in, this Website. Access to or information from such third-party sites is provided for your convenience only. Silver Tiger does not monitor or endorse such third-party sites.
This Website is not to be construed as a form of promotion, an offer to sell securities or as a solicitation to purchase our securities. This Website has been produced as a source of general information only.
Please note that this Website contains "forward-looking information", within the meaning of applicable Canadian securities legislation. Forward-looking information includes, but is not limited to, information with respect to our plans respecting our mineral projects and our other key mineral properties and the ability to secure and maintain required permits for such projects and properties, exploration expenditures and activities and the possible success of such exploration activities, the estimation of mineral reserves and resources, the realization of mineral estimates, the timing and amount of estimated future production, costs of production, capital expenditures, costs and timing of the development of new deposits, mineral pricing, mine life projections, the availability of third-party concentrate, business and acquisition strategies and the timing and possible outcome of pending litigation. Often, but not always, forward-looking information can be identified by the use of words like "plans", "expects", "estimates", "forecasts", "intends", "understands", "anticipates", and similar expressions. Forward-looking information is based on the opinions and estimates of management as of the date such information is provided and is subject to known and unknown risks, uncertainties and other factors that may cause our actual results, level of activity, performance or achievements to be materially different from those expressed or implied by such forward-looking information, including risks associated with the mining industry such as economic factors (including future commodity prices, currency fluctuations and energy prices), failure of plant, equipment, processes and transportation services to operate as anticipated, dependence on key personnel and employee relations, environmental risks, government regulation, actual results of current exploration activities, possible variations in ore grade or recovery rates, permitting timelines, capital expenditures, reclamation activities, land titles, and social and political developments and other risks of the mining industry. Although we have attempted to identify important factors that could cause actual results to differ materially from those contained in forward-looking information, there may be other factors that cause results not to be as anticipated, estimated or intended. There can be no assurance that forward-looking information will prove to be accurate, as actual results and future events could differ materially from those anticipated in such information. Accordingly, readers should not place undue reliance on forward-looking information. We do not undertake to update any forward-looking information, except as required by applicable securities laws, or to comment on analyses, expectations or statements made by third parties in respect of us, our financial or operating results or our securities.
Cautionary Note to US Investors
The disclosure on this Website has been prepared in accordance with the requirements of Canadian securities laws, which differ from the requirements of United States securities laws. Disclosure, including scientific or technical information, has been made in accordance with Canadian National Instrument 43-101 -- Standards of Disclosure for Mineral Projects ("NI 43-101"). NI 43-101 is a rule developed by the Canadian Securities Administrators that establishes standards for all public disclosure an issuer makes of scientific and technical information concerning mineral projects. As a result, information contained on this Website containing descriptions of the mineral properties or estimates of mineral reserves or resources of Silver Tiger is not comparable to similar information disclosed by U.S. companies in reports filed with the SEC.
For example, the terms "measured mineral resources", "indicated mineral resources", "inferred mineral resources", "proven mineral reserves" and "probable mineral reserves" are used on this Website to comply with the reporting standards in Canada. While those terms are recognized and required by Canadian regulations, the SEC does not recognize them.
Under the rules and regulations of the SEC set forth in Industry Guide 7, a U.S. company may only disclose estimates of proven and probable mineral reserves, and may not disclose estimates of any classification of mineral resources. In addition, the definitions of proven and probable mineral reserves used in NI 43-101 differ from the definitions in the SEC Industry Guide 7. Under United States standards, mineralization may not be classified as a "reserve" unless the determination has been made that the mineralization could be economically and legally produced or extracted at the time the reserve determination is made. Investors are cautioned not to assume that all or any part of the mineral deposits in these categories will ever be converted into mineral reserves. Any estimate of mineral reserves or resources has a great amount of uncertainty as to its existence, and great uncertainty as to its economic and legal feasibility with estimates of mineral resources having a greater degree of uncertainty. It cannot be assumed that all or any part of measured mineral resources, indicated mineral resources or inferred mineral resources will ever be upgraded to a mineral reserve or mined. Further, in accordance with Canadian rules, estimates of inferred mineral resources cannot form the basis of feasibility or other economic studies. Investors are cautioned not to assume that any part of the reported measured mineral resources, indicated mineral resources, or inferred mineral resources on this Website will ever be classified as a reserve. Disclosure of "contained ounces" is permitted disclosure under Canadian regulations; however, the SEC normally only permits issuers to report mineralization that does not constitute reserves as in place tonnage and grade without reference to unit measures.