Ultra Resources Begins Metallurgical Testwork for La Rioja Gold Project in Argentina
July 09 2020 - 8:30AM
Ultra Resources Inc. (TSX-V: ULT) (“Ultra Resources” or “the
Company”) is pleased to announce that it has shipped two bulk
samples with a total weight of 849 kilograms from its Gold Project
in La Rioja Province, Argentina to China for metallurgical testing.
Bulk sample # 101 is from Callanas mining license and #102 is from
Al Espinillo mining license. To make it a representative sample of
mineralization style on the property, the sample was collected from
multiple quartz veins (464 kilograms) and the historical dump
material (385 kilograms) from each mine as summarized below:
Callanas Mine (Sample 101)The
sample was taken from two locations at the Callanas VI quartz vein
area. The first location is an old exploration camp site where a
3.5-metre-thick quartz vein is exposed within a 40 metre deep
historical workings. The vein has a strike of 130° dipping
vertically. Mineralization is in the form of malachite, limonite,
and other sulfides with silicification / sericite alteration. The
dump material is located 40 metres to the north of the pit around
the old camp site. The second location is from and old incline
where 1.5-metre-thick quartz vein is exposed, shows massive
hematite alteration, high density, with a strike of 110° and
vertical dip. The Dump sample was taken from the material piled at
the edges of the incline.
Al Espinillo Mine (Sample
102)The sample was taken from the edge of a 40 metre deep
historical mine workings where an approximately four-metre-wide
fractured quartz vein having a strike of 110° dipping vertically is
exposed. Mineralization is in the form of malachite, chalcopyrite,
and other sulfides. Sericite and copper oxide alteration is common.
The dump material is located around the old mine workings.
About the Metallurgical
TestworkThe Company has contracted Yantai Xinhai Mining
Research & Design Co., Ltd., Shandong, China (“Xinhai”) to
carry out the following metallurgical testwork.
- Head grade sample
analysis for gold, silver, and other elements.
- Particle size analysis: The sample
will be screened into several fractions to measure the contents of
each fraction and distribution rate of various metals.
- Determination of true density and
bulk density of the mineralized rock.
- Determination of mineral processing
technical parameters and process flows of gold recovery from the
samples.
- As the sample represents a
polymetallic mineralized material, containing gold, silver, copper,
lead, zinc, etc. The test will focus mainly on gold recovery.
- The preliminary test scheme for
mineral processing of the bulk sample is the gravity concentration
plus nonconventional environmentally friendly gravity tailings
leaching tests.
- If other valuable elements such as
copper have influence on gold recovery, the corresponding recovery
process will be carried out to improve the recovery rate of
gold.
- Conduct dehydration test on mineral
processing products.
- Based on the test results and
considering the requirements of capacity and other conditions of
mineral processing designs, Xinhai will provide recommendations for
equipment selection, water and electricity requirements and other
economic parameters.
Dr. Weiguo Lang, CEO of Ultra Resources, stated
that, “Although we are facing tough challenges due to the Global
Pandemic effects of COVID-19, the Company has been very successful
in keep things going on the projects side. The metallurgical
testwork will be a leap forward in developing small scale
production plans to process available historical dump material at
our La Rioja Gold mines while exploring the underground gold
resources based on the historical exploration work by JICA and
ASGO.”
About Yantai Xinhai Mining Research
& Design CoShandong Xinhai Mining Technology &
Inc. is a stockholding high and new technology enterprise to
provide “Turnkey Solution for Mineral Processing Plant” including
design and research, machine manufacturing, equipment procurement,
management service, mine operation, mine materials procurement
& management as well as industry resources integration. Up to
now, with 500 mine EPC projects, mining technologies and experience
of 70 kinds of ores and 112 patents, Xinhai has established
overseas offices with products exported to more than 90 countries.
For further information, please visit the Xinhai’s website at:
http://www.xinhaimineral.com/en/about_4.html.
About La Rioja Gold ProjectThe
gold project in the south of the province of La Rioja Argentina,
consists of three prospecting and exploration areas and 13
manifestations of discoveries. Also, in the area there are several
historical gold mines and quartz veins in granodiorite rocks hosted
by early Paleozoic shearing. Gold mineralization is typically
associated with epithermal style shear hosted quartz veins. Initial
evaluation of dump material available for historical mines on the
Property indicates approximately 25,000-30,000 tons of dump
material is available for gold and other metals processing.
Qualified PersonThe technical
information contained in this news release has been reviewed and
approved by Afzaal Pirzada, P.Geo., a qualified person, as defined
by NI 43-101 who works as Vice President Exploration of the
Company.
ON BEHALF OF THE BOARD OF DIRECTORS
“Kiki Smith”
Kiki Smith, CFO
About Ultra Resources Inc.Ultra
Resources is an exploration and development company with a focus on
the acquisition and development of gold, copper, and lithium
assets. The Company currently holds a brine lithium property in
Argentina, and one hard rock spodumene type lithium property at the
Georgia Lake area in northwestern Ontario, Canada. The Company also
holds other gold and base metals properties in Argentina.
For further information, please contact the
Company at:Attention: Kiki SmithTelephone: 778 968-1176Facsimile:
604 909-4682Email: kiki@ultraresources.comWebsite:
www.ultraresources.comor view the Company’s filings at
www.SEDAR.com.
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