(TheNewswire)
VANCOUVER, BRITISH COLUMBIA / TheNewswire / February 5, 2019 (TSXV: NRG, US: NRGOF, Frankfurt: X6C)
– Newrange Gold Corp. ("Newrange" or the
“Company") is pleased to announce that preliminary metallurgical testing achieved
gold extraction of 97.1%, 88.5%, 96.0% and 73.6% on four composite samples with respective Calculated Head Grades (see definition
in footnotes to table below) of 79.4, 0.26, 1.49 and 0.53 grams gold per metric tonne (g/T Au) from the Pamlico
Project.
The four samples were composited from stored coarse rejects of Reverse Circulation (RC) drilling and submitted
to McClelland Labs of Sparks, Nevada for bottle roll metallurgical leach tests. The table below presents salient results of
these preliminary tests.
Summary Of 96 Hour Bottle Roll Metallurgical Tests
Coarse Rejects - Pamlico Project, Nevada
|
Composite Sample
(from drill hole)
|
Au
|
g/T Au
|
Reagent Consumption
|
Recovery
|
|
|
Calculated
|
Assay
|
Predicted
|
Kg/Tonne ore
|
%
|
Recovered Gold
|
Gold in Tails
|
Head Grade 1
|
Head Grade 2
|
Head Grade 3
|
NaCN Cons.
|
Lime Added
|
P17-14 Comp.
|
73.6
|
0.39
|
0.14
|
0.53
|
0.36
|
0.46
|
0.13
|
1.6
|
P17-02 Comp.
|
96.0
|
1.43
|
0.06
|
1.49
|
1.34
|
1.27
|
0.17
|
1.4
|
P17-09 Comp.
|
88.5
|
0.23
|
0.03
|
0.26
|
0.10
|
0.07
|
0.17
|
1.5
|
P17-10 Comp.
|
97.1
|
77.10
|
2.30
|
79.40
|
107.00
|
97.94
|
0.23
|
1.3
|
1 Calculated Head Grade is mathematical combination of the gold actually
recovered combined with the assay of the leached residue (gold in tails)
|
2 Assay Head Grade is mathematical average of at least three duplicate fire
assays of the sample as delivered to laboratory
|
3 Predicted Head Grade is the length weighted average (fire assay) grade of
original drill sample
|
Robert Carrington, President of the Company commented, “These results are better than we could
have possibly hoped for at this early stage, supporting our opinion that the gold is very fine, mostly microscopic and that there
are no apparent metallurgical challenges at Pamlico. To our delight, the calculated (or actual) head grade for the three
lower grade composite samples was substantially higher than the predicted grade indicated by the original drill sample assays and
suggests potential for a much larger and potentially heap leachable gold system than previously contemplated at
Pamlico.”
Key Highlights
High gold recovery, ranging from 73.6% to 97.1%, across all grade
ranges.
Rapid leach time confirms the majority of gold at Pamlico is very fine grained,
going into solution readily under ordinary metallurgical conditions.
High gold recovery confirms complete oxidation of system and lack of
“encapsulation” of gold by other inert minerals such as silica or sulfides.
Extremely low reagent consumption indicates mineralization contains little or no
cyanide consuming minerals (cyanocides) or other deleterious material.
Extended leaching time will likely improve the 97.1% gold extraction of the 79.4
g/T Au Calculated Head in composite P17-10 because this composite was still yielding gold when the leach was terminated.
For the three lowest grade composite samples, the average grade of the gold actually recovered
by leaching (from Calculated Head Grades) was 27% higher than the Predicted or Assay Head Grades, suggesting both better grades,
larger volumes and therefore more gold may be present in the large clouds of stock work or disseminated mineralization
surrounding the structurally controlled high-grade gold at Pamlico.
Methodology
Coarse rejects of RC drill samples that had previously been stage crushed to 80% passing 10 mesh were
composited into four grade ranges with predicted grades of 0.07, 0.46, 1.27 and 97.94 g/T Au based on original fire assays.
Each composite sample weighed 2 kilograms or more. Composited samples were then securely delivered to McClelland Labs
of Sparks, Nevada for 96 hour bottle roll leach tests.
Each composite sample was fire assayed in triplicate to determine the “Head Grade Assay”. Approximately
one thousand grams (1 kg) of each composite sample was leached for 96 hours at a pulp density of 40% solids in an aqueous solution
with a concentration of 1 gram sodium cyanide per liter of solution. Protective alkalinity was maintained by adding
sufficient lime to maintain a pH between 10.0 and 11.0. Solutions were monitored for pH and strength at 2, 4, 6, 24, 48, 72
and 96 hour intervals. Additional lime and / or cyanide were added to maintain the leach solution within specifications.
Throughout the leach cycle, gold in solution was determined by Inductively Coupled Plasma (ICP) at 2, 4, 6, 24, 48, 72 and 96
hour intervals.
Upon completion of the leach cycle, gold remaining in the leached “tails” was determined by triplicate fire
assay, with the resulting average taken as the tail assay. The Calculated Head Grade is computed by mathematically combining
the tail assay and the actual recovered gold, weighted for the original weight of leached material.
Mr. Robert G. Carrington, P. Geo, a Qualified Person as defined by National Instrument 43-101, the President
and Chairman of the Company, has reviewed, verified and approved for disclosure the technical information contained in this news
release.
About Pamlico
Located 12 miles southeast of Hawthorne, Nevada, along US Highway 95, the project enjoys excellent access and
infrastructure, a mild, year-round operating climate and strong political support from Mineral County, one of the most pro-mining
counties in the pro-mining state of Nevada. The Pamlico project covers the historic Pamlico group of mines, as well as the
nearby Good Hope, Gold Bar and Sunset mines.
Discovered in 1884, the district rapidly gained a reputation as being one of Nevada’s highest grade districts.
Held by private interests for most of its history, the property remains underexplored in terms of modern exploration.
About Newrange Gold Corp.
Newrange is an aggressive exploration and development company focused on near to intermediate term production
opportunities in favorable jurisdictions including Nevada, Colorado and Colombia. With numerous drill intercepts of near
surface oxide gold mineralization to 340 grams gold per metric tonne the Company’s flagship Pamlico Project is poised to become a
significant new Nevada discovery. Focused on developing shareholder value through exploration and development of key
projects, the Company is committed to building sustainable value for all stakeholders. Further information can be found on
our website at www.newrangegold.com.
Signed: “Robert Archer”
CEO
For further information contact:
Sharon Hebgin
Corporate Communications
Phone: 760-898-9129
Email: info@newrangegold.com
|
Dave Cross
Chief Financial Officer and Corporate Secretary
Phone: 604-669-0868
Email: dcross@crossdavis.com
|
Website: www.newrangegold.com
Neither the TSX Venture Exchange nor the Investment Industry Regulatory Organization of Canada
accepts responsibility for the adequacy or accuracy of this release.
Forward-Looking Statement:
Some of the statements in this news release contain forward-looking information that involves
inherent risk and uncertainty affecting the business of Newrange Gold Corp. Actual results may differ materially from those
currently anticipated in such statements.
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