(TheNewswire)
TheNewswire - December 07, 2020 -New Carolin Gold Corp. (the “Company” or “New Carolin”)(TSXV:LAD ) ( OTC:LADFF) ispleased to report that recent metallurgical testing of samples fromthe tailings deposit at its Ladner Project confirmed that asignificant gold concentrate could be produced by regrinding thetailings to a finer size and utilizing conventional flotation. Thetests were performed by Met-Solve Laboratories Inc. of Langley, BC, afull-service mineral processing laboratory and metallurgical testingfacility.
This most recent work was performedon material with an assay head grade of 1.45 gpt Au. By applying amulti-stage rougher flotation procedure on the material, up to 75.9%of the gold was recovered into the rougher concentrate. Athree-stage cleaning process of a rougher concentrate was able togenerate a final cleaner product with a grade of 66 gpt Au. For full results see the table below.
It should be noted that the average grade of theIndicated Mineral Resource in the Company’s Tailings Deposit is, infact, 1.83 gpt Au (see below). Thus, assuming a similarconcentration ratio, management is hopeful that, on average, an evenhigher-grade concentrate may be achieved.
Given the successful completion of the concentrationtesting, management plans to undertake further engineering andlogistical work to optimize the recovery process and to evaluate theoverall economic potential of reprocessing the tailingsdeposit.
As reported in the Company’s NI 43-101 TechnicalReport, dated May 29, 2015, which can be found at www.sedar.com, theCompany’s Tailings Storage Facility at its Ladner Project,approximately 23 kms northeast of Hope B.C., contains the followingmineral resources:
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- Indicated Mineral Resource of 445,000 tons grading0.053 oz/ton/Au (1.83gpt/Au), for a contained gold ounces estimate of24,000 oz.
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- Inferred Mineral Resource of 93,000 tons, grading0.053 oz/ton/Au (1.85 gpt/Au), for a contained gold ounces estimate of5,000 oz.
For the metallurgical test program, a total of 125 kgs.of material was homogenized and 2 kg test charges were generated witha rotary splitter. A total of four rougher flotation tests wereinitially performed to investigate the metallurgical response of thematerial at different grind sizes, at 80% passing (P80) ranging from49 to 222 microns. The flotation tests were performed using a DenverD12 flotation machine. The following flotation conditions were usedfor the grind sensitivity tests:
- Potassium Amyl Xanthate (PAX) as the primarycollector, added in incremental dosages.
- Dialkyl dithiophosphate 3418A (P-based sulphidecollector), added in all three stages.
- Methyl isobutyl carbinol (MIBC) as a frother.
- Copper sulphate as an activator, added in the thirdstage.
- Natural pH.
Test ID | P80 (µm) | Rougher Concentrate Product | ||
Weight Recovery (%) | Au Grade (gpt) | Au Recovery (%) | ||
KN202 | 222 | 4.0 | 14.62 | 40.9 |
KN203 | 138 | 7.9 | 10.66 | 61.0 |
KN204 | 87 | 12.7 | 6.53 | 64.3 |
KN205 | 49 | 19.8 | 4.99 | 75.9 |
The initial rougher flotation tests results, assummarized in the table above, show that the flotation performance ofthe material is improved by grinding the material. By reducing thematerial to a P80 of 49 microns, the rougher recovery of goldincreased to 75.9% as compared with 40.9% as achieved at a coarse P80of 222 microns.
Following the rougher flotation tests, a single cleanerflotation test, consisting of three (3) sequential cleaning stages,was conducted to investigate the upgradeability of the rougherconcentrate. Using the identical procedure as test KN205, a rougherconcentrate with a recovery of 71.3% Au and a grade of 5.65 g/t Au ina mass yield of 16.8% was generated for the cleaning test. Thecleaner flotation test yielded the following results:
Weight | Au | ||
Product | % | Assay, g/t | % Distribution |
3rd Cleaner Concentrate | 0.3 | 66.00 | 12.7 |
3rd Cleaner Tails | 0.9 | 24.80 | 16.4 |
2nd Cleaner Concentrate | 1.1 | 34.07 | 29.1 |
2nd Cleaner Tails | 2.7 | 12.30 | 25.4 |
1st Cleaner Concentrate | 3.9 | 18.67 | 54.5 |
1st Cleaner Tails | 12.9 | 1.73 | 16.8 |
Rougher Concentrate | 16.8 | 5.65 | 71.3 |
Rougher Tails | 83.2 | 0.46 | 28.7 |
Calculated Head | 100.0 | 1.33 | 100.0 |
Assayed Head | 1.45 |
Further cleaner flotation investigation willpotentially optimize the efficiency of the cleaning circuit andimprove on the final cleaner concentrate grade. In a closed circuitsetting, the recycling of the cleaner tailings streams is alsoexpected to increase the Au recovery to the final concentrate.
All disclosure of scientific or technical informationmade herein is based upon information prepared by or under thesupervision of Danny Kwok P.Eng. (BC), a qualified person as definedby National Instrument 43-101. Mr. Kwok is an independent Metallurgistand directed the abovementioned testing and interpretation of theresults thereof. Samples of the tailings were submitted to Met-SolveLaboratories Inc. of Langley, BC.
About New Carolin Gold Corp.
New Carolin Gold is a Canadian-based junior companyfocused on the exploration, evaluation and development of our 100%owned property consisting of 144 square kilometers of contiguousmineral claims and crown grants, collectively known as the “LadnerGold Project” (Project). The Project is located near Hope, BC inthe prospective and under-explored Coquihalla Gold Belt, which is hostto several historic small gold producers including the Carolin Mine,Emancipation Mine and Pipestem Mine, and numerous goldprospects.
For additional information, please visit theCompany’s website at www.newcarolingold.com .
ON BEHALF OF THE BOARD OFDIRECTORS
"Kenneth R. Holmes"
President
Toll Free: 1( 855)891-9185
E-mail: info@newcarolingold.com
Web site: www.newcarolingold.com
This news release does notconstitute an offer to sell or a solicitation of an offer to buy anyof the securities in the United States. The securities have not beenand will not be registered under the United States Securities Act of1933, as amended (the “U.S. Securities Act”) or any statesecurities laws and may not be offered or sold within the UnitedStates or to U.S. Persons unless registered under the U.S. SecuritiesAct and applicable state securities laws or an exemption from suchregistration is available.
Neither the TSX Venture Exchange norits Regulation Services Provider (as that term is defined in thepolicies of the TSX Venture Exchange) accepts responsibility for theadequacy or the accuracy of this press release.
Caution concerningforward-looking information
This news release may containforward-looking statements that are based on the Company’sexpectations, estimates and projections regarding its business and theeconomic environment in which it operates. These statements are notguarantees of future performance and involve risks and uncertaintiesthat are difficult to control or predict. Therefore, actual outcomesand results may differ materially from those expressed in theseforward-looking statements and readers should not place undue relianceon such statements. Statements speak only as of the date on whichthey are made and the Company undertakes no obligation to update thempublicly to reflect new information or the occurrence of future eventsor circumstances, unless otherwise required to do so by law.
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