Rockcliff Provides Update on Metallurgical Testing
February 28 2020 - 8:25AM
Rockcliff Metals Corporation (
“Rockcliff” or the
“Company”) (CSE: RCLF) (FRANKFURT: RO0, WKN:
A2H60G) is pleased to announce results from ongoing
metallurgical studies on three of the Company’s projects; Tower,
Talbot and Rail located in the Flin Flon-Snow Lake region of
Manatoba.
Highlights of the Metallurgical
Testing:
- Copper recoveries ranging from 91.2% - 94.4%;
- Copper concentrate grade of 28.2%-31.3%;
- Low zinc contamination on copper concentrates (0.3%-1%);
and
- Potential ability to produce Zinc concentrate of
>50%Zn.
Mr. Alistair Ross, President and CEO, commented,
“As we continue to upgrade the level of confidence in our
deposits, it is very encouraging to see the complete range of
metallurgical results be so positive. Indicative copper recoveries
of between 91.2% to 94.4% to a clean copper concentrate through the
existing Bucko Mill facility is another key technical validation to
support future development decisions on any of the three deposits.
The ability to make a zinc concentrate, without the use of cyanide,
fits well with our desire to optimize the value of the resource
while minimizing our impact on the environment. These positive
results bode well for our intention to convert the Bucko Mill,
currently under lease, to a copper concentrator.”
Metallurgical Update for Tower, Talbot
and Rail Deposits
Results from recent benchscale metallurgical
testing completed under the direction of Jake Lang at Base
Metallurgical Laboratories in Kamloops, BC have demonstrated the
potential to produce separate, market-quality copper and zinc
concentrates. The test program generated sequential copper
and zinc flotation concentrates from a relatively coarse primary
grind of approximately 150 micron k80. Rougher concentrates
were reground at 20-30 micron k80. The flowsheet tested does
not require the use of cyanide to separate zinc from copper and the
reagent scheme is applicable to all three deposits based on the
samples tested. Testing was completed on overall composites
indicative of each deposits anticipated feed grade. Results
produced from open circuit batch tests are described in the
following table showing concentrate quality and metal recoveries by
deposit:
To view an image of this table, please visit:
https://orders.newsfilecorp.com/files/3071/52944_be91dd6864074be4_001full.jpg
Testwork has demonstrated the ability to produce
copper concentrates at or above 28% copper with low zinc
contamination and recoveries ranging from 91 to 94.5%. Zinc
upgrading to above 50% Zn was achieved for each deposit from feed
grades ranging from 0.58% Zn to 3.3% Zn. In all cases,
zinc recovery is expected to improve in future closed circuit
locked cycle testing.
Milling Permits and Metallurgical
Studies
Rockcliff has a six year lease on
the Bucko Mill and tailings facilty located within trucking
distance from its portfolio of Flin-Flon Snow Lake region
deposits.
Metallurgical test work has been designed in two
phases. The first phase was to determine characterization of the
deposit mineralogy and the ability of the ore to respond to
concentration by flotation, with the results described in this
press release. The second phase will focus on the optimization of
the concentration process through the Bucko Mill. This
will enable Rockcliff to evaluate the potential of mill upgrades
and the economic trade-off of capital required for this
optimization. The results of the second phase of work is antipated
in the second quarter of 2020.
QPMike Romaniuk P.Eng.,
VP Projects of Rockcliff, a Qualified Person in accordance with
Canadian regulatory requirements as set out in NI 43-101, has read
and approved the scientific and technical information that forms
the basis for the disclosure contained in this press release.
About Rockcliff Metals
CorporationRockcliff is a well-funded Canadian resource
development and exploration company, with a fully functional +1,000
tpd leased processing and tailings facility as well as several
advance-staged, high-grade copper and zinc dominant VMS deposits in
the Snow Lake area of central Manitoba. The Company is a
major landholder in the Flin Flon-Snow Lake greenstone belt which
is home to the largest Paleoproterozoic VMS district in the world,
hosting mines and deposits containing copper, zinc, gold and
silver. The Company’s extensive portfolio of properties
totals over 4,500 square kilometres and includes eight of the
highest-grade, undeveloped VMS deposits in the belt.
For more information, please visit
http://rockcliffmetals.comTwitter: @RockcliffMetalsLinkedin:
Rockcliff Metals CorpFacebook: Rockcliff Metals Corporation
For further information, please
contact:Rockcliff Metals
Corporation
Alistair
Ross
President &
CEO
Phone: (249) 805-9020aross@rockcliffmetals.com
Cautionary Note Regarding
Forward-Looking Statements: This news release includes
forward-looking statements that are subject to risks and
uncertainties. Forward-looking statements involve known and unknown
risks, uncertainties, and other factors that could cause the actual
results of the Company to be materially different from the
historical results or from any future results expressed or implied
by such forward-looking statements. All statements contained in
this news release, other than statements of historical fact, are to
be considered forward-looking. Although Rockcliff believes the
expectations expressed in such forward-looking statements are based
on reasonable assumptions, such statements are not a guarantee of
future performance and actual results or developments may differ
materially from those in the forward-looking statements.
The Canadian Securities Exchange does not accept
responsibility for the adequacy or accuracy of this news
release.
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