Pure Energy Minerals Discovers Higher Grade Lithium at Depth in New Wells at Clayton Valley South, Nevada
Pure Energy Minerals Discovers Higher Grade Lithium at
Depth in New Wells at Clayton Valley South, Nevada
DENVER, May 09, 2017 (GLOBE NEWSWIRE) -- Pure Energy Minerals Limited (TSX-V:PE)
(FRANKFURT:A111EG) (OTCQB:PEMIF) (the “Company” or “Pure Energy”) is pleased to announce results
from depth-specific brine samples from exploratory wells CV-7 and CV-8 on the Clayton Valley South
Project (the “CVS Project” or the “Project”). Positive indications of lithium enriched brine occurred
throughout the screened intervals of the wells, with increased concentrations in deeper samples.
The average lithium concentration over the screened interval in CV -7 was 70 milligrams per liter (mg/L)
lithium, ranging between 56 and 109 mg/L lithium. The CV -8 samples averaged 134 mg/L, including a
range of lithium values from 58 to 229 mg/L. The interval from 640 meters (m) (2,100 feet [ft]) to the bottom
of the screening at 867 m (2,845 ft) in CV -8 contained average lithium concentrations of 210 mg/L. The
deeper part of the aquifer system in CV -8 thus contains considerable thickness of some of the highest -
grade lithium brine yet encountered on the Project.
Pumping test samples collected at both wells also yielded consistently high lithium values that may indicate
mixing of the brine from the multi-layer aquifer system. The lithium content of brine from the CV -8 pumping
test stabilized after only 6 hours of pumping, while lithium values in the CV -7 pumping test became
relatively steady after about 12 hours. The stable production of high -lithium brine over the duration of the
pumping tests demonstrates potential for sustained production of lithium -bearing brine from the aquifer
systems encountered in these wells.
Patrick Highsmith, Pure Energy Minerals’ CEO, discussed the data from the Company ’s most recent wells,
“Our latest drilling at the CVS Project has yielded thick sections of brine -saturated sediments and strong
lithium values right to the bottom of the basin. These deeper brines are also very low in calcium and
magnesium, which usually translates to favorable process chemistry. We continue to be enthusiastic about
the grade, chemistry, and volume potential at depth on the CVS Project. Now that all the data are in, we are
updating the drilling database and finalizing the resource model. These are the last inputs needed for the
Preliminary Economic Assessment (PEA), and we look forward to completing the economic analysis and
sharing the PEA results in the next few weeks. ”
Thick Sections of Lithium and Good Chemistry in Clayton Valley South Brine
Brine samples collected from exploratory wells CV-7 and CV-8 show continuous lithium-enriched brine
(greater than 50 mg/L) throughout the screened intervals, culminating in the thickest such section yet seen
on the Project at CV-8 of over 654 metres (2,145 feet). While brine is present throughout the section
investigated in these recent wells, the brine gets better at depth as the best lithium grades and most
favorable chemistry occur at greater than 549 m (1,800 feet) in CV -7 and 640m (2,100 feet) in CV -8 below
land surface (bls). The increased lithium concentrations at depth are accompanied by magnesium to
lithium ratios of 1.4 or lower, with most below 1. The calcium content of the deeper brine is also
anomalously low. Low magnesium and calcium content of lithium brines is significant, as these elements
can interfere with low-cost lithium extraction. Tables 1 and 2 below summarize analytical results for depth -
specific brine samples collected from exploratory wells CV-7 and CV-8.
Table 1 - Analytical results for CV -7 depth -specific samples (screened interval 180 - 424m bls)
Table 2 - Analytical Results for CV -8 depth -specific samples (Screened intervals 362 - 725m and
788 - 867m bls)
Consistent Lithium -bearing Brine Produced During Pumping Tests
Pure Energy’s specialist hydrogeological consultants, Montgomery & Associates ( “Montgomery”), designed
and conducted pumping tests at CV -7 and CV-8. Pumping tests were operated continuously (48 hours at
CV-7, and 72 hours at CV -8) and included collection of brine samples along with extensive hydrogeological
data on the brine aquifer system (See news releases dated March 6, 2017 and March 27, 2017).
Figure 1 below illustrates lithium concentrations in the pumping -test discharge over the course of each test.
Lithium concentrations in the extracted brine rapidly stabilized in both pumping tests, indicating the
potential for sustained production of lithium -bearing brine from the CVS aquifer system. Pumping rates
were 5 liters per second (80 gallons per minute) for the CV -7 pumping test and 2 liters per second (30
gallons per minute) for the CV -8 pumping test. It is important to note that none of these exploration wells
have yet been optimized in their construction to pump from the highest grade or most permeable zones.
A graph accompanying this announcement is available at
http://www.globenewswire.com/NewsRoom/AttachmentNg/f5afc65a-8939-452e-9674-f3b00d2f81d1
Well Construction
Well
Sample
Depth
(m)
Sample
Depth
(ft)
Density
(g/cm3)
Lithium
Li
(mg/L)
Magnesium
Mg
(mg/L)
Calcium
Ca
(mg/L)
CV-7 122 400 1.04 56 343 2,020
CV-7 183 600 1.04 82 776 4,380
CV-7 213 700 1.03 69 858 5,110
CV-7 305 1000 1.03 57 692 4,210
CV-7 366 1200 1.03 56 603 3,530
CV-7 457 1500 1.04 59 565 3,290
CV-7 549 1800 1.04 109 56 205
Well
Sample
Depth
(m)
Sample
Depth
(ft)
Density
(g/cm3)
Lithium
Li
(mg/L)
Magnesium
Mg
(mg/L)
Calcium
Ca
(mg/L)
CV-8 213 700 1.04 71 215 1,230
CV-8 305 1000 1.04 74 164 1,290
CV-8 396 1300 1.03 58 127 1,160
CV-8 457 1500 1.03 75 88 823
CV-8 549 1800 1.04 87 70 680
CV-8 640 2100 1.07 229 33 184
CV-8 701 2300 1.08 217 27 161
CV-8 793 2600 1.07 202 36 224
CV-8 823 2700 1.08 192 266 844
The CV-7 and CV-8 wells were constructed in the northern portion of the CVS Project. The CV -7 well was
drilled using diamond coring methods and reamed by mud rotary methods to a depth of 610 m (2,000 ft)
bls, similar in depth to CV-3 during mid-2016. Drillers applied similar technology at CV-8, where it was
cored to a depth of 973 m (3,192 ft) bls then reamed to 890 m (2,920 ft) bls. The CV -8 well is believed to
be the deepest well constructed in Clayton Valley to date.
This work was performed in accordance with State of Nevada waivers and permits issued to Pure Energy by
the Nevada Division of Water Resources and the Division of Environmental Protection, which allowed for
exploratory well construction, collection of brine samples, and extraction of brine from the exploratory wells
with subsequent discharge to surface during the pumping tests.
Quality Assurance & Quality Control
Company and Montgomery hydrogeologists applied extensive quality assurance measures during this
program, including: comparative sampling by different methods, an accredited check laboratory, and the
use of blind duplicates, blanks, and analytical controls in laboratory submissions. All analytical data
reported in this news release were generated by Western Environmental Testing Laboratory ( “WETLAB”)
of Sparks, Nevada. WETLAB is accredited by the Nevada State Division of Environmental Protection for
determination of lithium, magnesium and other elements in non -potable water by EPA method 200.7.
ALS Minerals in Vancouver, British Columbia provides systematic blind and independent check analyses on
the lithium and other analytes in the sampling program at CVS. ALS Minerals operates an industry leading
quality management system and is accredited under ISO 17025 for provision of mineral analysis.
The comparison between check labs was well within acceptable tolerances. All quality control data from CV -
7 and CV-8 complied with the Company’s quality standards.
At CV-7, hydrogeologists collected passive no -purge depth -discrete samples using both the Snap Sampler
(widely used on the Project) and wireline sampling methods. Comparison of analytical results showed good
agreement between the two methods.
Walter Weinig, Professional Geologist and SME Registered Member (SME Registered Member # 4168729),
is a qualified person as defined by NI 43 -101 and supervised the preparation of the scientific and technical
information that forms the basis for this news release. Mr. Weinig is not independent of the Company, as he
is an officer.
Patrick Highsmith, Certified Professional Geologist (AIPG CPG # 11702), is a qualified person as defined by
NI 43-101 and has reviewed and approved the scientific and technical information contained in this news
release. Mr. Highsmith is not independent of the Company, as he is an officer and director.
About Pure Energy Minerals Ltd.
Pure Energy is a lithium resource developer that is driven to become a low -cost supplier for the growing
lithium battery industry. The Company’s current focus is on the development of the CVS Lithium Brine
Project and the adjoining Glory Lithium Clay Project in Clayton Valley, Nevada. Pure Energy also recently
acquired a purchase option on a major new lithium brine project in the Lithium Triangle of South America,
the Terra Cotta Project ( “TCP”). The TCP is located on Pocitos Salar in Salta, Argentina, where it enjoys
some of the best infrastructure and access of any lithium brine exploration project in Argentina.
Pure Energy has developed core strengths in innovative development and processing technologies for
lithium brines and lithium mineral deposits. Key attributes and activities include:
A large, strategic land position with excellent infrastructure in a first-class mining jurisdiction:
approximately 4,500 hectares (11,000 acres)in Clayton Valley, Esmeralda County, Nevada,
located a 3-hour drive from the Gigafactory;
The only lithium brine resource in North America except for Albemarle’s adjoining Silver
Peak lithium brine mine, which is the only producing lithium operation in North America;
An inferred mineral resource containing approximately 816,000 metric tonnes of Lithium
Carbonate Equivalent (LCE) at an average grade of approximately 102 mg/L lithium,
reported in accordance with NI 43-101 (see July 2015 Inferred Resource Report);
An advanced program of testing the efficacy and economics of modern, environmentally-
responsible processing technologies to convert the CVS brines into high purity lithium
products for new energy storage uses;
A new early stage exploration program on the 13,000-hectare (32,000 acre) Terra Cotta
Project (TCP), located on Pocitos Salar in Salta Province; and
An active business development program, applying Company expertise to the evaluation of
new lithium targets around the world.
On behalf of the Board of Directors,
“Patrick Highsmith”
Chief Executive Officer
CONTACT:
Pure Energy Minerals Limited (www.pureenergyminerals.com)
Email: [email protected]
Telephone – 604 608 6611, ext 5
Forward Looking Statements: The information in this news release contains forward looking statements that
are subject to a number of known and unknown risks, uncertainties and other factors that may cause actual
results to differ materially from those anticipated in our forward looking statements. Factors that could
cause such differences include: technical difficulties in connection with exploration and development
activities, technological challenges with the extraction and processing of lithium brines, the speculative
nature of mineral exploration, volatile microcap equity markets, changes in world commodity markets, equity
markets, costs and supply of materials relevant to the mining industry, change in government and changes
to regulations affecting the mining industry, including environmental requirements. Forward -looking
statements in this release may include statements regarding mineral processing, estimates of reduced
future capital and operating expenses, delivery of a preliminary economic assessment, future exploration
programs, operation plans, geological interpretations, and mineral tenure issues. Although we believe the
expectations reflected in our forward looking statements are reasonable, results may vary, and we cannot
guarantee future results, levels of activity, performance or achievements.
Neither TSX Venture Exchange nor its Regulation Services Provider (as that term is defined in the policies
of TSX Venture Exchange) accepts responsibility for the adequacy or accuracy of this release.