Inventus Mining Corp. (TSX VENTURE: IVS)
(“Inventus” or the “Company”) is pleased to announce the results
from its bulk sampling program at its 100%-owned Pardo Project near
Sudbury, Ontario. The 5,000-tonne bulk sample from the 007 Zone
returned an average head grade of
3.4 g/t gold
(Au) with excellent gravity recoverable gold. The bulk
sampling program was successful in reconciling the gold
mineralization in the predictive block model that was generated
using large diameter infill diamond drill holes.
Key results include:
- A total of 4,979 dry
tonnes of mineralized rock was processed with a head grade
of 3.4 g/t Au.
- Bulk sample head grade reconciled
strongly with the predictive block model grade of 3.3 g/t
Au.
- Gravity and flotation concentrate
contained 438 oz Au, worth approximately
Cad$1,000,000.
- Of the 438 oz Au recovered,
299 oz Au representing 68% was
contained in the gravity concentrate, and 138 oz
Au representing 32% was contained in the
flotation concentrate.
- The overall metallurgical
performance of the bulk sample did not balance, which is attributed
to high gravity recoverable gold, and approximately 76 oz Au is
estimated to remain in the mill circuit.
Geology and Mineralization
The 007 Zone bulk sample was extracted from a
horizontal mineralized conglomerate “reef” that occurred from
surface to a depth of 4 metres (m). The conglomerate reef was on
average 2.5 m thick and consisted of 72% clasts and 28% matrix all
the mineralization is contained in the matrix. The mineralization
occurs as disseminated pyrite and gold within the matrix that
surrounds the clasts within the conglomerate. The conglomerate reef
had a sharp footwall contact that is easily identified during
mining.
Infill Drilling and Block Model
Prediction
Prior to extraction of the bulk sample, the area
was diamond drilled with 28 large diameter (7 cm) holes at 5-m
centers for grade estimation purposes. Samples of the drill core
used in the predictive block model were subject to density
measurements (2.79 t/m3) and whole-core sampling to provide an
adequate sample size for assay. Geological contacts from the infill
drilling were used to create hard boundaries for wireframing the
block model domain. The predicted block model had 5,526
tonnes grading 3.3 g/t Au.
Mining and Grade Control
Bulk sample extraction was relatively simple due
to the location on surface and horizontal orientation. The bulk
sample was drilled and blasted at 1.2-metre centers, and
mineralized material was crushed on site to under 4-inches. Due to
winter weather conditions during mining, tight controls on blast
contacts and pit mucking were not consistently maintained.
Post-operation assessment of the bulk sample pit has indicated
approximately 450 tonnes of material was left in the pit and
over-blasting of the footwall resulted in some dilution.
The mined block mined was from surface to the
lower lithological contact of the mineralized reef. Drilling
results showed that the upper portion of the reef (surface to 1-1.5
m depth) was the highest grade, while the portion closest to the
footwall contact was much lower grade. The decision to extract the
whole unit provided important information; however, a more
selective mining approach targeting grade could be used.
Processing
A total of 5,140 wet tonnes was trucked to the
mill near in Timmins between January and February 2022, as measured
by the mill truck scale. Processing of the bulk sample occurred in
mid-February and produced gravity and flotation concentrates. The
results of the bulk sample are presented in Table
1. During the bulk sample run, a total of 89 ball mill
feed samples and 88 tails samples were collected to produce nine
daily composite samples for assay. The composite samples from the
ball mill feed returned an average grade of 3.38 g/t
Au (the “head grade”) and samples of the tails returned an
average grade of 0.17 g/t Au (the “tails
grade”).
The sample was calculated to contain 541 oz Au
and a total of 438 oz Au was recovered, representing an apparent
reconciled head grade of 2.9 g/t Au and a metallurgical recovery of
81%. However, due to the high percentage of gold
recovered by gravity and the large discrepancy between the
contained and recovered gold ounces, it is assumed that significant
gold remained in the milling circuit. An effort was made to clean
out the mill circuit resulting in recovery of 13.7 oz Au, but many
areas were not cleaned, including the two ball mills. The amount of
gold remaining in the mill circuit is estimated to be approximately
76 oz but cannot be measured. Therefore, the overall true
reconciled head grade and recovery of the bulk sample is
inconclusive.
Table 1. 007 Zone Bulk Sample
Results
BulkSample |
HeadGrade |
CalculatedContainedAu |
GravityConcentrate |
FlotationConcentrate |
TotalRecoveredAu |
TailsAu |
Estimated AuRemainingIn-circuit1 |
Tonnes(dry) |
Au (g/t) |
TroyOunces |
Tonnes(dry) |
TroyOunces |
Tonnes(dry) |
TroyOunces |
TroyOunces |
Au(g/t) |
TroyOunces |
Troy Ounces |
4,979 |
3.38 |
541 |
8.3 |
299.3 |
102.4 |
138.3 |
437.6 |
0.17 |
27.3 |
+/- 76.1 |
1The estimated Au remaining
in-circuit is the assumed amount of gold that was not recovered in
the milling circuit. We believe that an in-circuit loss is very
likely with high gravity recoverable gold and should be considered
during future bulk sampling.
Concentrates
The gravity concentrates and high-grade mill
cleanup material totalled 8.3 dry tonnes of material with an
average grade of 1,118.4 g/t Au. The gravity concentrate was
shipped to a smelter in Chicago where analysis showed 299.3 oz Au
was contained. The flotation concentrate totalled 102.4 dry tonnes
of material with an average grade of 42.0 g/t Au. The flotation
concentrate was shipped to a smelter in Quebec where analysis
showed 138.3 oz Au was contained.
For further information, please contact:
Mr. Stefan SpearsChairman and CEOInventus Mining Corp.Tel: (647)
258-0395 x280E-mail: stefan@inventusmining.com
About Inventus Mining Corp.
Inventus is a mineral exploration and
development company focused on the world-class mining district of
Sudbury, Ontario. Our principal assets are a 100% interest in the
Pardo Paleoplacer Gold Project and the Sudbury 2.0 Project located
northeast of Sudbury. Pardo is the first important paleoplacer gold
discovery found in North America. Inventus has approximately 140.6
million common shares outstanding.
Neither TSX Venture Exchange nor its Regulation
Services Provider (as that term is defined in the policies of the
TSX Venture Exchange) accepts responsibility for the adequacy or
accuracy of this release.
Qualified PersonThe Qualified
Person responsible for the geological technical content of this
news release is Inventus’ Vice-President Exploration, Wesley
Whymark, P.Geo., who has reviewed and approved the technical
disclosure in this news release on behalf of the Company.
Technical InformationThe
samples used to determine head grade and tails grade assays
described in this release were collected by Northern Sun Mining
(“NSM”) on behalf of Inventus. The samples were taken by NSM every
2 hours during the run to create a daily composite. The samples
collected for the head grade were approximately 1 kg and taken
systematically from the belt feeding the ball mill. Samples for the
tails grade were collected in a 1 L bottle from the final flotation
cell prior to the final tails pump box. The daily composites were
dried and split into 150-g subsamples and transported in secure
sealed bags for assay by SGS Laboratories.
The samples used to determine gravity
concentrate assays described in this release were collected by NSM
and Sipi Metals. NSM collected the sample using a pipe sampling
unit, collecting 8 pipe samples, weighing approximately 5 kg for
each of the 8 bulk bags of gravity concentrate. The samples were
then dried and split into 150-g subsamples and transported in
secure sealed bags for party assay by SGS Laboratories. The gravity
concentrate samples collected by Sipi Metals were made into 5 lots
and dried and milled to -40 mesh. Each of the lots was then blended
and spear sampled to collect a ~5 kg subsample. The subsample was
then further reduced by riffle splitting a 1-kg subsample. The 1-kg
subsample was then crushed to -80 mesh and split into three parts.
One part of the subsample splits was shipped to Inventus in a
secured sealed bag, that in turn, was then delivered to SGS
Laboratories by Inventus for assay.
The samples used to determine flotation
concentrate assays described in this release were collected the
Horne Smelter and assayed by a third-party independent lab, Alfred
H Knight.
Forward-Looking Statements This
News Release includes certain "forward-looking statements" which
are not comprised of historical facts. Forward-looking statements
include estimates and statements that describe the Company’s future
plans, objectives or goals, including words to the effect that the
Company or management expects a stated condition or result to
occur. Forward-looking statements may be identified by such terms
as “believes”, “anticipates”, “expects”, “estimates”, “may”,
“could”, “would”, “if”, “yet”, “potential”, “undetermined”,
“objective”, or “plan”. Since forward-looking statements are based
on assumptions and address future events and conditions, by their
very nature they involve inherent risks and uncertainties. Although
these statements are based on information currently available to
the Company, the Company provides no assurance that actual results
will meet management’s expectations.
Inventus Mining (TSXV:IVS)
過去 株価チャート
から 12 2024 まで 1 2025
Inventus Mining (TSXV:IVS)
過去 株価チャート
から 1 2024 まで 1 2025