Blue Sky Uranium Announces Initial Mineral Resource
Estimate for Ivana Deposit, Amarillo Grande Uranium-Vanadium
Project, Argentina
Vancouver, BC -- March 5, 2018 -- InvestorsHub NewsWire -- Blue
Sky Uranium Corp. (TSX-V:
BSK, FSE: MAL2;
OTC: BKUCF), "Blue Sky" or the "Company") is pleased to
announce the initial independent mineral resource estimate for the
Ivana Deposit at the Company’s 100% owned Amarillo Grande
uranium-vanadium project, in Rio Negro Province,
Argentina.
Highlights
• Inferred mineral resource estimate of 23.9 million tonnes
averaging 363 parts per million (“ppm”) U308 containing 19.1
million pounds of U3O8 at a 100 ppm uranium
cut-off.
• Mineralization at Ivana is hosted by loosely consolidated
sediments from surface to 24 metres depth; it is expected that
resources would be extracted via open-pit methods
• Metallurgical and beneficiation test work in progress to provide
additional data for a maiden Preliminary Economic Assessment in
2018
• The Ivana deposit remains open for expansion
• Additional resource potential exists in the Ivana area and
throughout the 140-km long trend at the Amarillo Grande project
“This first resource estimate represents the biggest uranium
discovery in Argentina in the last 40 years and it represents for
Blue Sky a major step towards our goal of defining a low-cost
regional-size uranium producing district,” commented Nikolaos
Cacos, Blue Sky President & CEO. “We are excited to move
forward with a preliminary economic assessment this year,
particularly as the project remains open for expansion.”
A NI 43-101 Technical Report supporting disclosure of this mineral
resource and containing additional details will be filed by Blue
Sky on SEDAR within 45 days of this press release.
Results from ongoing metallurgical studies and preliminary
beneficiation studies are expected by the end of the first
quarter. This data will contribute to a Preliminary Economic
Assessment (PEA) for the Ivana deposit, which is expected to be
completed before the end of the year.
The arcuate (“C”) shape of the Ivana deposit is believed to
represent a preserved sector of a regional mineralized redox-front,
which often include more than one deposit. Therefore, follow-up
drilling programs will test for lateral extensions to the currently
defined deposit, as well as previously recognized local targets
identified by airborne and hand-held radiometric surveys and
geological modeling.
Ivana Location, Geology and Metallurgy
The Ivana deposit is located in the southernmost of three target
areas that comprise the Amarillo Grande UraniumVanadium
project. The project has year-round access through a
well-maintained gravel road, and is in a semi-arid area with low
rainfall and population density. Mineralization was first
identified at Ivana after field follow-up of a 2010 regional
high-resolution airborne radiometric and magnetic survey.
The Ivana deposit displays characteristics of surficial-type and
sandstone-type “roll front” uranium-vanadium deposits.
Mineralization at Ivana includes primary coffinite and uraninite,
in pore spaces of poorly-consolidated sandstones and conglomerates,
in addition to peripheral secondary carnotite, which occurs
interstitially to and coats pebbles and clasts in loosely
consolidated sandstones and conglomerates. The Amarillo
Grande project is believed to have district-scale potential for
discovery of similar styles of mineralization.
The deposit is characterized by two stacked zones of uranium
mineralization, the upper zone and the lower zone. The two
zones occur together through most of the deposit but there are
localized areas where only one zone is present. The upper
zone averages 2.7 metres in thickness, with a maximum of 10 metres,
while the lower zone has a maximum of 20 metres and has an average
thickness of 6.2 metres. Plan view of the modelled Ivana
deposit can be found here:
https://www.blueskyuranium.com/assets/docs/nr/2018MAR05_Ivana_Modelling_Blocks_MAP1.pdf
Preliminary metallurgical and beneficiation studies for Ivana are
underway and expected to be completed by the end of the first
quarter of 2018. Initial alkaline leach testing on composite
samples with carnotite-mineralization resulted in recovery of 95%
of the uranium in 2 hours (see news release dated January 22,
2018). Ongoing metallurgical testing includes
initial work on coffinite (+uraninite) mineralized material, as
well as physical beneficiation assessments. The beneficiation
testing is similar to that carried out previously on samples from
the Anit target area of the Amarillo Grande project (see release
dated February 7th, 2011). The Anit preliminary beneficiation
test work demonstrated that a very simple wet screening method
could be utilized to reject unmineralized coarse clastic material,
producing a lower-mass higher-grade concentrate containing a high
percentage of the insitu uranium.
Mineral Resource Estimate Details
Mineral resources, which are not mineral reserves, do not have
demonstrated economic viability. The estimate of mineral resources
may be materially affected by environmental, permitting, legal,
title, taxation, sociopolitical, marketing, or other relevant
issues. The quantity and grade of reported Inferred resources are
uncertain in nature and there has been insufficient exploration to
classify these inferred resources as Indicated or Measured, and it
is uncertain if further exploration will result in upgrading them
to an Indicated or Measured category.
Table 1. Mineral Resource Statement for the Ivana
Deposit, Amarillo Grande Project, February 28, 2018
Inferred Resources – Base Case at 100 ppm Uranium
cut-off grade
|
Zone
|
Tonnes
(t)
|
U
(ppm)
|
V
(ppm)
|
U3O8
(ppm)
|
U308
(%)
|
Contained U308
(lb)
|
Upper
|
3,200,000
|
132
|
131
|
156
|
0.016
|
1,100,000
|
Lower
|
20,700,000
|
335
|
105
|
395
|
0.040
|
18,000,000
|
Total
|
23,900,000
|
308
|
109
|
363
|
0.036
|
19,100,000
|
Notes to Table 1:
- Mineral Resources are not Mineral Reserves and do not have
demonstrated economic viability.
- The Mineral Resources in this estimate were not constrained
within a conceptual pit shell owing to the shallow nature of the
deposit (0 to 24 m) and blocks above cut-off being reasonably
contiguous.
- The 100 ppm uranium cutoff grade is based on operative costs of
$12/t, a price of $50/lb U3O8, and a process
recovery of 90%. A density of 1.84 was applied.
- It is reasonably expected that the majority of Inferred Mineral
Resources could be upgraded to Indicated Mineral Resources with
continued exploration.
- The resource was estimated within distinct zones of elevated
uranium concentration occurring within the host sediments. Vanadium
is associated with uranium and is estimated within the same zones.
There is no indication that Vanadium occurs outside of the elevated
uranium zones in the Ivana deposit area in sufficient
concentrations to justify developing estimation domains focused on
Vanadium.
The mineral resource estimate in Tables 1 & 2 has been
prepared by Bruce M. Davis, FAusIMM, BD Resource Consulting, Inc.,
and Susan Lomas, P.Geo., Lions Gate Geological Consulting Inc. who
are both independent Qualified Persons as set forth by National
Instrument 43-101 (“NI 43-101”). The overall effective date of this
resource estimate is February 28, 2018.
Mineral resource estimates are made from a 3D block model based
on geostatistical applications using commercial mine planning
software (Geovia Gems, Version 6.7.4). The block model has a
nominal block size measuring 50 x 50 x 2 m and utilizes data
derived from 427 drill holes in the Ivana Deposit. The resource
estimate was generated using reverse circulating (RC) drill hole
sample assay results and the interpretation of a geological model
which relates to the spatial distribution of uranium and
vanadium.Interpolation characteristics were defined based on the
geology, drill hole spacing, and geostatistical analysis of the
data. The effects of potentially anomalous high-grade sample data
are controlled by top cuts and limiting the distance of influence
during block grade interpolation. The grade models have been
validated using a combination of visual and statistical methods.
The resources were classified according to their proximity to the
sample data locations and are reported, as required by NI 43-101,
according to the 2014 CIM (Canadian Institute of Mining) Definition
Standards for Mineral Resources and Mineral Reserves. Model blocks
estimated by three or more drill holes spaced at a maximum distance
of 200 metres are included in the Inferred category. The estimate
of Inferred mineral resources is reported without a limiting pit
shell due to the shallow nature of the deposit (from 0 to 24 metres
below surface) and the majority of blocks above cut-off are
reasonably contiguous.Additional information about the resource
modeling methodology will be available in an NI 43-101 technical
report within 45 days of this news release.
Table 2. Sensitivity of Resources to Cut-Off
Grade
U Cut-off
(ppm)
|
Zone
|
Tonnes
(t)
|
U
(ppm)
|
V
(ppm)
|
U3O8
(ppm)
|
U308
(%)
|
Contained U308
(lb)
|
50
|
Upper
|
10,800,000
|
88
|
108
|
104
|
0.010
|
2,500,000
|
50
|
Lower
|
30,900,000
|
248
|
97
|
293
|
0.029
|
19,900,000
|
50
|
Total
|
41,700,000
|
207
|
100
|
244
|
0.024
|
22,400,000
|
|
100
|
Upper
|
3,200,000
|
132
|
131
|
156
|
0.016
|
1,100,000
|
100
|
Lower
|
20,700,000
|
335
|
105
|
395
|
0.040
|
18,000,000
|
100
|
Total
|
23,900,000
|
308
|
109
|
363
|
0.036
|
19,100,000
|
|
150
|
Upper
|
400,000
|
223
|
192
|
263
|
0.026
|
200,000
|
150
|
Lower
|
15,200,000
|
413
|
115
|
487
|
0.049
|
16,300,000
|
150
|
Total
|
15,600,000
|
408
|
117
|
481
|
0.048
|
16,500,000
|
|
200
|
Upper
|
200,000
|
326
|
243
|
384
|
0.038
|
200,000
|
200
|
Lower
|
11,600,000
|
487
|
123
|
574
|
0.057
|
14,700,000
|
200
|
Total
|
11,800,000
|
485
|
125
|
571
|
0.057
|
14,900,000
|
|
250
|
Upper
|
100,000
|
367
|
257
|
432
|
0.043
|
100,000
|
250
|
Lower
|
9,300,000
|
552
|
132
|
651
|
0.065
|
13,400,000
|
250
|
Total
|
9,400,000
|
550
|
134
|
649
|
0.065
|
13,400,000
|
Quality Assurance and Quality Control
The resource estimation was based on 427 RC drill holes,
representing 6,577 metres of drilling with one metre samples. The
drilling was completed in two phases starting in January 2017 and
finishing in January 2018. Only 2 holes were inclined, and 425
holes were vertical. Bedding and mineralized horizons are
approximately horizontal so vertical samples are believed to
represent true thickness. The resource area is typically covered by
drill holes on a 100 x 100 metre spacing, however holes on the
periphery of the deposit were spaced as much as 400 metres apart. A
summary of hole locations and significant intervals for the 427 RC
holes can be viewed here: https://www.blueskyuranium.com/assets/docs/
/2018MAR5_Amarillo_Grande_IVANA_Total_Drill_Summary_TABL.pdf
The drilling program was carried out using an Roc L8 and
FlexiROC D65 drill rigs from Atlas Copco, ore-control track-mounted
rigs adapted to RC with double and triple cyclone, respectively, to
reduce the dust loss during sampling and automatic sampling. The
difficulties encountered n casing every hole, due to the presence
of very poorly or unconsolidated sediments, resulted in limited
gamma probe surveying of drill holes. Approximately half of the
holes were surveyed by a senior geophysicist using a natural gamma
probe previously calibrated at the Comisión Nacional de Energía
Atómica facility (Atomic Energy National Commission, CNEA).Samples
were sent to Bureau Veritas Minerals of Mendoza, Argentina for
preparation by drying, crushing to 80% passing 10 mesh and then
pulverizing a 250g split to 95% passing 150 mesh.Pulps were sent to
Bureau Veritas Commodities Canada Ltd. for analysis of 45 elements
by means of Inductively Coupled Plasma Mass Spectrometry (ICP-MS)
following a four-acid digestion (MA-200).Samples over 4,000ppm
uranium are re-assayed, after phosphoric acid leach, by Inductively
Coupled Plasma Electron Spectrometry (ICP-ES). Approximately every
10th sample a blank, duplicate, or standard sample was inserted
into the sample sequence for quality assurance/quality control
(QA/QC) purposes.
Qualified Persons
The results of the Company's drilling program were reviewed,
verified (including sampling, analytical and test data) and
compiled by the Company's geological staff under the supervision of
David Terry, Ph.D., P.Geo. Dr. Terry is a Director of the Company
and a Qualified Person as defined in National Instrument 43-101.The
contents of this news release have been reviewed and approved by
Dr. Terry.
The mineral resource estimate and associated information in this
news release was prepared under the direction of Bruce Davis Ph.D.,
F.AusIMM, of BD Resource Consulting Inc. and Susan Lomas P.Geo of
Lions Gate Geological Consulting Inc. Based on education, work
experience relevant to this style of mineralization and deposit
type, and membership in a recognized professional organization,
both Dr. Davis and Ms. Lomas are independent Qualified Persons (QP)
within the requirements of NI 43-101 for the purposes of the
mineral resource estimate contained in this release. Both Dr. Davis
and Ms. Lomas have reviewed and approved this news release.
About the Amarillo Grande Project
This new 140-kilometre-long uranium district was first
identified, staked and underwent preliminary exploration by Blue
Sky from 2007 to 2012 as part of the Grosso Group’s strategy of
adding alternative energy focus to its successful portfolio of
metals exploration companies. The proximity of several major
targets suggests that if resources are delineated at more than one
area a central processing facility would be envisioned. The area is
flat-lying, semi-arid and accessible year-round, with nearby rail,
power and port access.
The near-surface mineralization, ability to locally upgrade,
amenability to leaching and central processing possibility suggest
a potentially low-cost development scenario.
For additional details on the project and properties, please see
the Company’s website: www.blueskyuranium.com
About Blue Sky Uranium Corp.
Blue Sky Uranium Corp. is a leader in uranium discovery in
Argentina. The Company's objective is to deliver exceptional
returns to shareholders by rapidly advancing a portfolio of
surficial uranium deposits into low-cost producers. Blue Sky has
the exclusive right to over 434,000 hectares (equiv. to 1,072,437
acres) of property in two provinces in Argentina. The Company’s
flagship Amarillo Grande Project was an in-house discovery of a new
district that has the potential to be both a leading domestic
supplier of uranium to the growing Argentine market and a new
international market supplier. The Company is a member of the
Grosso Group, a resource management group that has pioneered
exploration in Argentina since 1993.
ON BEHALF OF THE BOARD
“Nikolaos Cacos”
______________________________________
Nikolaos Cacos, President, CEO and Director
For further information please contact:
Corporate Communications
Tel: 1-604-687-1828
Toll-Free: 1-800-901-0058
Email: info@blueskyuranium.com
Neither TSX Venture Exchange nor its Regulation Services
Provider (as that term is defined in policies of the TSX Venture
Exchange) accepts responsibility for the adequacy or accuracy of
this release.
This news release contains forward-looking information which
is not comprised of historical facts. Forward-looking information
involves risks, uncertainties and other factors that could cause
actual events, results, performance, prospects and opportunities to
differ materially from those expressed or implied by such
forward-looking information. Forward looking information in this
news release includes, but is not limited to, Blue Sky’s
objectives, goals or future plans, statements regarding the
estimation of mineral resources, exploration results, potential
mineralization, exploration and mine development plans, timing of
the commencement of operations and estimates of market conditions.
Factors that could cause actual results to differ materially from
such forward-looking information include, but are not limited to,
failure to convert estimated mineral resources to reserves, capital
and operating costs varying significantly from estimates, the
preliminary nature of metallurgical test results, delays in
obtaining or failure to obtain required governmental, environmental
or other project approvals, political risks, uncertainties relating
to the availability and costs of financing needed in the future,
changes in equity markets, inflation, changes in exchange rates,
fluctuations in commodity prices, delays in the development of
projects and the other risks involved in the mineral exploration
and development industry, and those risks set out in Blue Sky’s
public documents filed on SEDAR. Although Blue Sky believes that
the assumptions and factors used in preparing the forward-looking
information in this news release are reasonable, undue reliance
should not be placed on such information, which only applies as of
the date of this news release, and no assurance can be given that
such events will occur in the disclosed time frames or at all. Blue
Sky disclaims any intention or obligation to update or revise any
forward-looking information, whether as a result of new
information, future events or otherwise, other than as required by
law. We advise U.S. investors that the SEC's mining guidelines
strictly prohibit information of this type in documents filed with
the SEC. U.S. investors are cautioned that mineral deposits on
adjacent properties are not indicative of mineral deposits on our
properties.
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