La Ronge Gold Captures Up to 93% Gold Recovery in a Flotation-Concentrate and Up to 72% Gold in a Gravity-Concentrate
03 Juni 2013 - 6:37PM
Marketwired Canada
La Ronge Gold Corp. (TSX VENTURE:LAR)
La Ronge Gold Corp. is pleased to report on recently completed metallurgical
testing of sample materials from the Preview SW deposit, located in northern
Saskatchewan, Canada.
Metallurgical testing was commissioned by ALS Metallurgy of Kamloops, B.C., to
provide a preliminary assessment of the gold recovery potential of two samples
of gold-bearing materials from the Preview deposit. Test work included ore
characterization, gravity recovery, and flotation test work. A final report of
this test work has been completed, dated May 27, 2013, and is filed on SEDAR.
The highlights of the test work results are as follows:
Ore Characterization
Two distinct samples of gold-bearing material were collected from two of the
five zones of gold mineralization defined at the Preview SW Deposit. Each sample
consisted of between 43 and 57 kg of split core that was selected to be
representative of the average grade of the deposit. These samples were tested
and assay results are summarized in the following table.
Summary of Metallurgical Sample Analysis
----------------------------------------------------------------------------
Au Ag As Fe S
Sample (g/t) (g/t) (%) (%) (%) SO4 (%)
----------------------------------------------------------------------------
----------------------------------------------------------------------------
Zone 102 3.43 1 0.63 3.6 0.47 0.02
----------------------------------------------------------------------------
Zone 104 2.53 1 0.17 3.1 0.33 0.01
----------------------------------------------------------------------------
Ore characterization work also included Automated Digital Imaging System (ADIS)
for the examination of gold occurrences within the materials. This provides
confirmation of the presence of free gold and gold associations, which is key to
understanding the gold deportment within a metallurgical process. ADIS results
show a significant portion of the gold in the Preview Deposit occurs as free
gold and available for recovery using gravity processes. Approximately 45
percent of the gold in the Zone 102 sample was observed as "liberated or free
gold," while approximately 30 percent of the gold occurrences in Zone 104 were
observed to be the same. A majority of the unliberated gold had strong
associations with arsenopyrite, pyrite, and bismuth minerals, which will benefit
gold recovery in a flotation process. Two photomicrographs are shown below of
gold occurrences in the Preview SW Deposit materials.
Detailed Metallurgical Test Results
Detailed gold recovery test work culminated in the completion of locked cycle
testing of a proposed gravity and flotation process for the recovery of gold
into a gravity concentrate and a flotation concentrate. Gold recovery results
are summarized in the following table.
Summary of Locked Cycle Test Results
----------------------------------------------------------------------------
Gravity Concentrate Flotation Concentrate
----------------------------------------------------------------------------
Overall
Sample Mass Au Au Rec. Mass Au Au Rec. Rec.
----------------------------------------------------------------------------
% g/t % % g/t % %
----------------------------------------------------------------------------
----------------------------------------------------------------------------
Zone 102 1.10 235 72 0.70 119 21 93
----------------------------------------------------------------------------
----------------------------------------------------------------------------
Zone 104 0.70 181 52 0.60 165 38 90
----------------------------------------------------------------------------
These test results confirm that flotation concentrates of sufficiently high
grade can be produced to allow for the evaluation of shipping the concentrate to
a third-party treatment facility and facilitate taking advantage of reduced
capital requirement at the Preview SW Deposit site. It is contemplated that
leaching or smelting of the flotation concentrate could be undertaken at nearby
gold leaching facilities, or the concentrate could be shipped to a smelter for
blending into copper or lead smelter feed.
Mr. Rasool Mohammad stated, "These test results provide a basis for ongoing
confidence in the Preview project. With simplified process options available, we
believe the project will benefit from lower capital requirements, reduced
operating costs, and a simplified operational plan relative to other gold
projects. The Preview project remains an exciting opportunity for La Ronge Gold
Corp."
About the Preview SW Gold Deposit:
As reported in a News Release dated December 3, 2012, the Preview SW gold
deposit hosts gold resources as summarized in the table below, using the base
case estimate at a gold cut-off grade of 0.5 grams per tonne gold (g/t Au):
-------------------------------------------------------------
Preview SW Gold Resources
-------------------------------------------------------------
Category Tonnes Au g/t Contained oz Au
-------------------------------------------------------------
-------------------------------------------------------------
INDICATED 1,958,400 2.12 138,100
INFERRED 3,714,600 2.09 257,300
-------------------------------------------------------------
The deposit remains open in all directions.
These mineral resources are in the process of being updated to reflect the
results of the recently completed winter drilling program.
There are six known gold prospects on the Property: from north to south they are
Preview North, C, B, Preview SW, Clearwater A, and Clearwater B. In all
prospects, structurally controlled mesothermal lode gold is found in quartz
veins within or on the margins of sheared dioritic-gabbroic sills and is
associated with sulphides. The area of diorite-gabbro sills extends for 5200 m
in a northeast-southwest direction across the property and reaches approximately
200 m in width.
The main Preview SW deposit is comprised of several sub-parallel
northeast-trending gold-bearing structural (shear) zones. The shears trend
north-easterly (020 degrees to 045 degrees ) and are steeply dipping. The
en-echelon 1 to 10 m-wide structures are persistent at depth, and the zones
bifurcate and merge at depth and along their length. The shears comprise major
and minor shears that splay out and merge to form "horses" of un-deformed rock
within the shear zone.
This metallurgical work was supervised by Jeffrey B. Austin, P. Eng., a
Qualified Person for the purposes of National Instrument 43-101, who has
reviewed the technical information in this News Release. The remaining technical
data in this Release has been reviewed by Gordon Davidson, P. Geol., the
Company's Vice President of Exploration and a Qualified Person for the purposes
of National Instrument 43-101.
About La Ronge Gold Corp.
La Ronge Gold is a Vancouver-based rapidly advancing gold-resource growth and
development company, focused on the expansion of high-grade gold deposits in one
of Canada's emerging gold producing regions, the La Ronge Gold Belt, northern
Saskatchewan. The Company has significant land positions (52,932 Ha. or 131,000
acres) in the region. The Company also holds other gold projects located in
Ontario, including Old Cabin Project near Wawa. This property is adjacent to the
Island Gold Mine where Richmont Mines recently added a new high grade Inferred
Mineral Resources of 508,000 ounces Au at a grade of 10.73 g/t Au.
For more information about La Ronge Gold Corp., please go to www.larongegold.com.
FORWARD-LOOKING INFORMATION
This News Release includes forward-looking information and statements, which may
include, but are not limited to, information and statements regarding or
inferring the future business, operations, financial performance, prospects and
other plans, intentions, expectations, estimates, and beliefs of the Company.
Information and statements which are not purely historical fact are
forward-looking statements. Forward-looking information and statements involve
and are subject to assumptions and known and unknown risks, uncertainties, and
other factors which may cause actual events, results, performance, or
achievements of the Company to be materially different from future events,
results, performance, and achievements expressed or implied by forward-looking
information and statements herein. Although the Company believes that any
forward-looking information and statements herein are reasonable, in light of
the use of assumptions and the significant risks and uncertainties inherent in
such information and statements, there can be no assurance that any such
forward-looking information and statements will prove to be accurate, and
accordingly readers are advised to rely on their own evaluation of such risks
and uncertainties and should not place undue reliance upon such forward-looking
information and statements. Any forward-looking information and statements
herein are made as of the date hereof, and the Company assumes no obligation and
disclaims any intention to update or revise any forward-looking information and
statements herein, or to update the reasons that actual events or results could
or do differ from those projected in any forward-looking information and
statements herein, whether as a result of new information, future events or
results, or otherwise.
FOR FURTHER INFORMATION PLEASE CONTACT:
La Ronge Gold Corp.
Rasool Mohammad, B.Sc. (Mining)
President & CEO
(604) 639-4533
info@larongegold.com
www.larongegold.com
(TSXV:LAR)
Historical Stock Chart
Von Apr 2024 bis Mai 2024
(TSXV:LAR)
Historical Stock Chart
Von Mai 2023 bis Mai 2024
