GoldMining Announces Resource Estimate for the Yarumalito Gold Project in Colombia
GoldMining Announces Resource Estimate for the Yarumalito Gold
Project in Colombia
Highlights:
Maiden inferred resource estimate for the Yarumalito Project of
1.24 Moz gold grading 0.58 g/t gold and 0.09% copper
or
1.5 Moz gold
equivalent grading 0.70 g/t gold equivalent
(Table 1);
The estimate furthers GoldMining's unique position of holding one of the largest global resource-stage gold portfolios among mid- and junior-
tier mining companies
;
Yarumalito is GoldMining's third acquisition in the Mid Cauca Belt of central
Colombia
, which also hosts several multi-million ounce gold
deposits owned by Zijin Mining, B2Gold and Anglogold Ashanti; and
GoldMining's
global aggregated mineral resource
(Fig.1 and Table 2) now totals:
10.5 Moz gold (13.4 Moz gold equivalent)
in the measured and indicated categories; and
13.7 Moz gold (16.4 Moz gold equivalent)
in the inferred category.
VANCOUVER
,
May 5, 2020
/CNW/ -
GoldMining Inc. (the "
Company
" or "
GoldMining
") (TSX: GOLD; OTCQX: GLDLF)
is pleased to
announce that it has completed a maiden mineral resource estimate for its 100% owned Yarumalito Gold-Copper Project (the "Yarumalito" or
the "Project"), Antioquia,
Colombia
.
The mineral resource estimate was prepared by Global Mineral Resource Services of
Vancouver, Canada
and includes a pit constrained
inferred resource of 66,271,000 tonnes grading 0.58 g/t gold (1,236,000 ounces) and 0.09% copper (129,262,000 pounds) or 0.70 g/t gold
equivalent (1,502,000 ounces) using a 0.5 g/t gold equivalent cut-off. See Table 1 below for information regarding the resource estimate.
Garnet Dawson
, CEO of GoldMining, commented,
"We are excited to announce this maiden resource for Yarumalito – another strategic
acquisition our team identified and executed as part of our long-term plans of focused acquisitions in the Americas. These acquisitions have
uniquely positioned us with one of the largest global resource-stage gold portfolios among mid- and junior-tier mining companies. While this
has been a cornerstone of our strategy since inception, we see significant value in this position in the current environment of recent gold price
improvements and decreasing worldwide gold discoveries.
Yarumalito is located within the same Miocene age gold belt that hosts advance-stage multi-million ounce gold deposits owned by Zijin
Mining, B2Gold and Anglogold Ashanti; mineralization hosted on these projects is not necessarily indicative of the future mining potential of
the Project. Historic drilling at Yarumalito focused on delineating its gold-copper porphyry potential, however, in addition to intersecting long
intervals of gold-copper mineralization, the drilling also intersected numerous high-grade, precious metal-rich base metal epithermal veins
such as 33.75 g/t gold over
1.85 m
intersected in drill hole YAR-11. Future exploration programs will look to expand and upgrade the gold-
copper porphyry mineralization at the Project, which remains open along strike and at depth, and to delineate the high-grade epithermal
veins."
The Project
Yarumalito is located approximately 75 km southwest of the city of
Medellin
in the Department of Antioquia in
Central Colombia
and
approximately 40 km south of GoldMining's La Mina Project. The Project is accessible by paved road with nearby high-capacity power lines,
water and labour. Yarumalito is comprised of one concession for a total area of approximately 1,453 Ha.
Exploration programs from 2008 to 2013 outlined several geophysical and geochemical anomalies across the property including the Obispo, La
Suiza, Balastreras, Escuela, El Guaico and El Sucre targets. Diamond drill programs (
18,540 m
in 55 holes) during that period primarily focused
on the Balastreras-Escuela mineralization, which has a surface projection of approximately
1,700 m
by
400 m
and is intersected in drill holes and
underground workings to a depth of
600 m
.
Resource Estimate
The following table sets forth the mineral resource estimate for Yarumalito.
Table 1: Inferred resource statement
1
using a 0.5 g/t gold equivalent cut-off for the Yarumalito Gold-Copper Project,
Colombia
, Global Mineral
Resource Services.
Mineral Type
Tonnes
Grade
Contained Metal
Au
Cu
AuEq
Au
Cu
AuEq
g/t
%
g/t
Oz
Lbs
Oz
Oxide
9,057,000
0.54
0.09
0.66
157,000
17,283,000
192,000
Sulphide
57,214,000
0.59
0.09
0.71
1,085,000
111,979,000
1,310,000
Total
66,271,000
0.58
0.09
0.70
1,236,000
129,262,000
1,502,000
1
Mineral resources are not mineral reserves and do not have demonstrated economic viability. There is no certainty that all or any part of the mineral resources will be converted into mineral reserves. The estimate of mineral resources may be materially
affected by environmental permitting, legal, title, taxation, sociopolitical, marketing or other relevant issues.
The Yarumalito deposit was modelled on a series of north-south cross-sections spaced
100 m
apart from which a three-dimensional wireframe
model was constructed for the mineralized zone at an approximate grade boundary of 0.1 g/t gold. Diamond drill holes (50) totaling
approximately
16,635 m
were used to define the model. High-grade gold values were capped at 9 g/t gold with 12 assays falling above this
value. Assay sample lengths were composited at
5.0 m
. Gold, copper and gold equivalent grades were interpolated into the block model in a
single pass using inverse distance square weighting. Individual blocks within the model measure 5 x 20 x
25 m
in dimension. For a grade to be
interpolated into a block it was necessary that a minimum of two and a maximum of four composites be located within the volume of the search
ellipse. A maximum of one composite was allowed per drill hole to ensure that each block was informed by a minimum of two drill holes.
Average bulk density of 2.3 and 2.7 g/cm
3
were used to convert block model volumes to tonnages for oxides and sulphides, respectively. Gold
equivalent grades were calculated based on the following formula:
AuEq = ((Au ppm*48.2) + (Cu ppm*0.006))/48.2
where 41.8 equals US$/gram for gold based on a gold price of
US$1,500
/ounce and 0.006 equals US$/ppm for copper based on a copper price
of
US$2.70
/pound. No allowance was made for metallurgical recoveries.
The block model was validated in three ways: (i) visual comparison of block values with underlying drill hole composite values; (ii) comparison of
descriptive statistics for the gold and copper block values with assay and composite values, and (iii) swath plots of gold equivalent composites,
gold equivalent block grades and modeled tonnage.
Resources were classified as inferred because the drilling is relatively widely spaced and there has been limited metallurgical testwork.
Additional infill drilling and metallurgical test work would be required to confirm grade continuity and metallurgical recoveries, respectively to
potentially upgrade the existing resource to indicated or measured categories.
Reasonable prospects for eventual economic extraction were determined by reporting the resource within a conceptual pit shell. The conceptual
pit delineated resource is reported within a pit shell using an assumed gold price of
US$1,500
/oz, copper price of
US$2.70
/lb, pit slope of 45º,
mining cost of
US$2.00
/t and processing cost of
US$8.00
/t.
Further details regarding the foregoing estimate, including the estimation methods and procedures, will be available in a Canadian National
Instrument 43-101 Technical Report, which will be filed on SEDAR (
www.sedar.com
) under the Company's profile within 45 days of the date
hereof.
Quality Control – Quality Assurance Program
The above resource estimate was based on drilling programs completed by previous operators. The drill programs incorporated control
samples including blanks, duplicates and standards as part of their Quality Control – Quality Assurance Program. The control samples from the
drill programs have been reviewed and verified by the Qualified Persons (as defined herein) and the assay results were deemed suitable for
resource estimation.
Qualified Persons
The resource estimate disclosed herein on Yarumalito was prepared for GoldMining by
Greg Z. Mosher
, M.Sc., P.Geo., of Global Mineral
Resource Services,
Vancouver
, Canada. Mr. Mosher is recognized as a qualified person as defined in Canadian National Instrument 43-101, is
independent of the Company and has reviewed and approved the disclosure regarding the resource estimate herein. Mr. Mosher completed a
site visit to Yarumalito on
November 14 to 15, 2019
.
Paulo Pereira
, President of GoldMining Inc. has reviewed and approved the technical information contained in this news release. Mr. Pereira
holds a Bachelors degree in Geology from Universidade do Amazonas in
Brazil
, is a Qualified Person as defined in NI 43-101 and is a member
of the Association of Professional Geoscientists of
Ontario
.
Note on Mineral Resource Estimates
Inferred mineral resources have a great amount of uncertainty as to their existence and great uncertainty as to their economic and legal
feasibility. It cannot be assumed that all or any part of an inferred mineral resource will ever be upgraded to a higher category. Under
applicable Canadian rules, estimates of inferred mineral resources may not form the basis of feasibility or pre-feasibility studies. It cannot be
assumed that part or all of an inferred mineral resource will be upgraded to a mineral reserve.
The terms "mineral resource", "measured mineral resource", "indicated mineral resource", "inferred mineral resource" used herein are Canadian
mining terms used in accordance with NI 43-101 under the guidelines set out in the Canadian Institute of Mining and Metallurgy and Petroleum
(the "CIM") Standards on Mineral Resources and Mineral Reserves, adopted by the CIM Council, as may be amended from time to time. These
definitions differ from the definitions in
the United States
Securities & Exchange Commission ("SEC") Industry Guide 7. As such, information
contained herein concerning descriptions of mineralization and resources under Canadian standards may not be comparable to similar
information made public by U.S. companies in SEC filings.
About GoldMining Inc.
GoldMining Inc. is a public mineral exploration company focused on the acquisition and development of gold assets in the Americas. Through its
disciplined acquisition strategy, GoldMining now controls a diversified portfolio of resource-stage gold and gold-copper projects in
Canada
,
U.S.A.
,
Brazil
,
Colombia
and Peru. Additionally, GoldMining owns a 75% interest in the Rea Uranium Project, located in the
Western Athabasca
Basin of
Alberta, Canada
.
Figure 1: GoldMining's Gold Resource Acquisitions in the Americas from 2012 to 2020 (Table 2).
Diversified Resource Portfolio in the Americas (CNW Group/GoldMining Inc.)
Table 2: GoldMining's Aggregated Mineral Resource Statement across all its Projects
1,2,3
.
Deposit
Cut-off
4
(g/t)
Tonnage
(Mt)
Grade
Contained Metal
Gold
(g/t)
Silver
(g/t)
Copper
(%)
Gold Eq
(g/t)
Gold
(Moz)
Silver
(Moz)
Copper
(Mlbs)
Gold Eq
(Moz)
Measured Resources
Titiribi
5
0.3
51.600
0.49
-
0.17
0.78
0.820
-
195.1
1.290
Yellowknife
13
0.5/1.5
1.176
2.10
-
-
2.10
0.080
-
-
0.080
Total
0.900
-
195.1
1.370
Indicated Resources
Titiribi
5
0.3
234.200
0.51
-
0.09
0.65
3.820
-
459.3
4.930
Sao Jorge
6
0.3
14.420
1.54
-
-
1.54
0.715
-
-
0.715
Cachoeira
7
0.35
17.470
1.23
-
-
1.23
0.692
-
-
0.692
Whistler
8
0.3
110.280
0.50
1.76
0.14
0.79
1.765
6.130
343.1
2.797
La Mina
9
0.25
28.170
0.74
1.77
0.24
1.12
0.667
1.607
150.2
1.013
Crucero
12
0.4
30.653
1.00
-
-
1.00
0.993
-
-
0.993
Yellowknife
13
0.5/1.5
12.933
2.35
-
-
2.35
0.979
-
-
0.979
Total
9.630
7.737
952.7
12.059
Measured and Indicated Resources
Total
10.530
7.737
1,147.8
13.429
Inferred Resources
Titiribi
5
0.3
207.900
0.49
-
0.02
0.51
3.260
-
77.9
3.440
Sao Jorge
6
0.3
28.190
1.14
-
-
1.14
1.035
-
-
1.035
Cachoeira
7
0.35
15.667
1.07
-
-
1.07
0.538
-
-
0.538
Whistler
8
0.3/0.6
311.260
0.47
2.26
0.11
0.68
4.626
22.617
713.5
6.731
La Mina
9
0.25
12.394
0.65
1.75
0.27
1.07
0.260
0.697
73.3
0.427
Boa Vista
10
0.5
8.470
1.23
-
-
1.23
0.336
-
-
0.336
Surubim
11
0.3
19.440
0.81
-
-
0.81
0.503
-
-
0.503
Crucero
12
0.4
35.779
1.00
-
-
1.00
1.147
-
-
1.147
Yellowknife
13
0.5/1.5
9.302
2.47
-
-
-
0.739
-
-
0.739
Yarumalito
0.5
66.271
0.58
-
0.09
0.70
1.236
-
129.3
1.502
Total
13.680
23.311
993.9
16.398
Table 2 Notes:
1
.
Mineral resources are not mineral reserves and do not have demonstrated economic viability. There is no certainty that all or any part of
the mineral resources will be converted into mineral reserves.
The estimate of mineral resources may be materially affected by
environmental permitting, legal, title, taxation, sociopolitical, marketing or other relevant issues.
2
.
The above aggregated resource table is provided for informational purposes only and is not intended to represent the viability of any
project on a standalone or aggregated basis. The exploration and development of each project, project geology and the assumptions and
other factors underlying each estimate, are not uniform and will vary from project to project. Please refer to the technical report for each
respective project, as referenced herein, for detailed information respecting each individual project.
3
.
All quantities are rounded to the appropriate number of significant figures; consequently, sums may not add up due to rounding.
4
.
Gold cut-off for all projects except for Whistler and Yarumalito, which is gold equivalent cut-off.
5
.
Notes for Titiribi
a
.
Based on technical report titled "Technical Report on the Titiribi Project Department of Antioquia,
Colombia
" prepared by
Joseph A.
Cantor
and
Robert E. Cameron
of
Behre Dolbear
& Company (
USA
), Inc., with an effective date of
September 14, 2016
,
which is
available at
www.sedar.com
under GoldMiningꞌs SEDAR profile.
b
.
Gold equivalent estimated for the Titiribi deposit assumes metal prices of
US$1,300
/oz gold and
US$2.90
/lb copper and recoveries
of 83% for gold and 90% for copper.
6
.
Notes for Sao Jorge:
a
.
Based on technical report titled "Technical Report and Resource Estimate on the São Jorge Gold Project, Pará State,
Brazil
"
prepared by
Porfirio Rodriguez
and
Leonardo de Moraes
of Coffey Mining Pty Ltd. ("Coffey"), with an effective date of
November 22,
2013
, which is available at
www.sedar.com
under GoldMiningꞌs SEDAR profile.
7
.
Notes for Cachoeira:
a
.
Based on technical report titled "Technical Report and Resource Estimate on the Cachoeira Property, Pará State,
Brazil
" prepared by
Gregory Z. Mosher
of Tetratech, Inc. with an effective date of
April 17, 2013
and amended and re-stated
October 2, 2013
,
which is
available at
www.sedar.com
under GoldMiningꞌs SEDAR profile.
8
.
Notes for Whistler:
a
.
Based on technical report titled "Technical Report on the Whistler Project" prepared by
Gary Giroux
of Giroux Consultants Inc., with
an effective date of
March 24, 2016
,
which is available at
www.sedar.com
under GoldMiningꞌs SEDAR profile.
b
.
The Whistler Project is comprised of three deposits: Whistler, Raintree West and Island Mountain.
c
.
Gold equivalent estimated for the Whistler deposit assumes metal prices of
US$990
/oz gold,
US$15.40
/oz silver and
US$2.91
/lb
copper and recoveries of 75% for gold and silver and 85% for copper.
d
.
Gold equivalent estimated for the Raintree West deposit assumes metal prices of
US$1,250
/oz gold,
US$16.50
/oz silver and
US$2.10
/lb copper and recoveries of 75% for gold, 85% for copper and 75% for silver
e
.
Gold equivalent estimated for the Island Mountain deposit assumes metal prices of
US$1,250
/oz gold,
US$16.50
/oz silver and
US$2.10
/lb copper and recoveries of 75% for gold, 85% for copper and 25% for silver (recovered in copper concentrate).
f
.
A gold equivalent cut-off of 0.3 g/t was highlighted in the estimate as a possible open pit cut-off (Whistler, Raintree-shallow and
Island Mountain), and a gold equivalent cut-off of 0.6 g/t was highlighted in the estimate as a possible underground cut-off (Raintree-
deep).
9
.
Notes for La Mina:
a
.
Based on technical report titled "Technical Report on the La Mina Project" prepared by
Scott E. Wilson of Metals Mining Consultants,
Inc. ("MMC") with an effective date of
October 24, 2016
,
which is available at
www.sedar.com
under GoldMiningꞌs SEDAR profile.
b
.
Gold equivalent estimated for the La Mina project assumes metal prices of
US$1,275
/oz gold,
US$17.75
/oz for silver and
US$2.75
/lb
for copper and recoveries of 93% for gold and 90% for copper.
10
.
Notes for Boa Vista:
a
.
Based on technical report titled "Technical Report on the Boa Vista Project and Resource Estimate on the VG1 Prospect, Tapajos
Area, Para State,
Northern Brazil
" prepared by Jim Cuttle,
Gary Giroux
and
Michael Schmulian
, with an effective date of
November
22, 2013
, which is available at
www.sedar.com
under GoldMiningꞌs SEDAR profile.
11
.
Notes for Surubim:
a
.
Based on technical report titled "Technical Report on the Rio Novo Gold Project and Resource Estimate on the Jau Prospect, Tapajos
Area, Para State,
Northern Brazil
" ("Surubim Project") prepared by Jim Cuttle and
Gary Giroux
, with an effective date of
November
22, 2013
, which is available at
www.sedar.com
under GoldMiningꞌs SEDAR profile.
12
.
Notes for Crucero:
a
.
Pit constrained resource estimate based on
US$1,500
/oz gold, mining cost of
US$1.60
/t, processing cost of
US$16.00
/t and pit slope
of 47 degrees.
b
.
Based on technical report titled "Technical Report on the Crucero Property, Carabaya Province,
Peru
" prepared by
Greg Z. Mosher
with an effective date of
December 20, 2017
, which is available at
www.sedar.com
under GoldMining's SEDAR profile.
13
.
Notes for
Yellowknife
:
a
.
Pit constrained resources with reasonable prospects of eventual economic extraction reported above a 0.50 g/t Au cut-off.
b
.
Pit optimization is based on an assumed gold price of
US$1,500
/oz, metallurgical recovery of 90%, mining cost of
US$2.00
/t and
processing and G&A cost of
US$23.00
/t.
c
.
Underground resources with reasonable prospects of eventual economic extraction stated as contained within gold grade shapes
above a 1.50 g/t Au cut-off.
d
.
Mineral resource tonnage and grade with reasonable prospects of eventual economic extraction are reported as undiluted and reflect
a bench height of 3.0 m.
e
.
Based on a technical report titled "Independent Technical Report for the Yellowknife Gold Project,
Northwest Territories, Canada
"
prepared by
Ben Parsons
(SRK Consulting (U.S.) Inc.) and
Dominic Chartier
(SRK Consulting (
Canada
) Inc. and
Eric Olin
(SRK
Consulting (U.S.) Inc.) with an effective date of
March 1, 2019
, which is available at
www.sedar.com
under GoldMining's SEDAR
profile.
The above aggregated resource statement is provided for information purposes only. Investors should refer to the underlying technical reports
referenced above for project-specific factors relating to each resource estimate.
Forward-looking Statements
This document contains certain forward-looking statements that reflect the current views and/or expectations of GoldMining with respect to its
business and future events, including expectations and future plans respecting the Project and any future exploration programs and other work
on the Project. Forward-looking statements are based on the then-current expectations, beliefs, assumptions, estimates and forecasts about
the business and the markets in which GoldMining operates, including that historical exploration results will be confirmed. Investors are
cautioned that all forward-looking statements involve risks and uncertainties, including: the inherent risks involved in the exploration and
development of mineral properties, the uncertainties involved in interpreting drill results and other exploration data, the potential for delays in
exploration or development activities, the geology, grade and continuity of mineral deposits, the possibility that future exploration,
development or mining results will not be consistent with GoldMiningꞌs expectations, accidents, equipment breakdowns, title and permitting
matters, labour disputes or other unanticipated difficulties with or interruptions in operations, fluctuating metal prices, unanticipated costs and
expenses, and uncertainties relating to the availability and costs of financing needed in the future. These risks, as well as others, including
those set forth in GoldMiningꞌs Annual Information Form for the year ended
November 30, 2019
and other filings with Canadian securities
regulators, could cause actual results and events to vary significantly. Accordingly, readers should not place undue reliance on forward-
looking statements and information. There can be no assurance that forward-looking information, or the material factors or assumptions used
to develop such forward looking information, will prove to be accurate. GoldMining does not undertake any obligations to release publicly any
revisions for updating any voluntary forward-looking statements, except as required by applicable securities law.
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CO: GoldMining Inc.
CNW 02:00e 06-MAY-20