Giyani Receives Positive Metallurgical Results For Its K.Hill Prospect
Giyani Receives Positive Metallurgical Results For Its K.Hill Prospect
OAKVILLE, ONTARIO – December 07, 2017 – Giyani Metals Corporation (TSXV:WDG,
GR:KT9) (“Giyani” or the “Company”) has received positive metallurgical testing results,
performed by Dalhousie Minerals Engineering Centre in Halifax, Nova Scotia, Canada, from the
manganese oxide bearing rocks sampled at the K.Hill Prospect, the first of three potential
deposits within the Kanye Manganese Project in Botswana.
Of significance, manganese nodule type material, abundant at K.Hill, can be easily treated
using a trammel/gravity/washing process. Manganese found in staining and veins
environments suggest only a light grind is required making it physically amenable to
hydrometallurgical processes. Hydrometallurgical processing takes the product to a grade
higher than 99.7% manganese in the form of electrolytic manganese dioxide (EMD) suitable
for the battery industry.
Robin Birchall CEO of Giyani said, “I am very pleased with the results of these tests. They
vindicate the approach the Company has taken to pursue the high value battery market. We look
forward to continuing our exploration and test work in Botswana at our deposits and hope to have
further supportive good news in the near future”.
In detail, the results indicate manganese minerals at K.Hill occur in three forms:
• Staining on the silicates, iron oxides and themselves.
• Small veins, as manganese oxides deposited on each other
• Nodules wherein the manganese has built-up into botrydal masses that may contain other
minerals
This supergene mineralogy is complex as there are many oxidation states of manganese and a
variety of other metals are present.
These results, however, are positive indications that the percentage of deleterious elements
in the rock does not affect quality or recovery. For example, Kaolin is present in one layer
of the manganese bearing rock tested. This mineral has a smaller particles size and is found
in veins; thus, should not present a problem during processing. Iron oxides are also found
which is normal in manganese ores.
It is recommended that additional testing be performed to determine the recovery of manganese
nodules through a screening, washing and/or gravity separation system and that the remainder of
the manganese be tested for recovery and purity using hydrometallurgical processes.
• Dump Material: hydrometallurgy tests to determine potential recovery. It is unlikely that
grinding will be required on this material. However, grinding should be done on a second
iteration of these tests to determine if recoveries can be improved.
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• Manganese-Iron Altered Shales: Size reduction to the range of 100 -300 micrometers
followed by hydrometallurgical testing to determine potential recovery of the manganese.
• Manganese Shales with Kaolin: this material is similar to the Manganese- Iron altered
shales with the potential of a smaller required grind size and the presence of Kaolin. If
Kaolin is detrimental to the hydrometallurgy a course grind should be performed at sizes
larger than a millimeter, followed by a washing to remove the kaolin prior to size
reduction to the 100 – 300 micrometers final size.
• Manganese altered Silicates: This has a low grade of manganese. However, some of the
manganese occurs in larger veins and could be separated with a course grind followed by
leaching and hydrometallurgy.
Examples of the manganese minerals found in the samples are shown in Table 1.
Table 1: Manganese minerals identified in the K.Hill samples
Name Lustre Colour Hardness Tenacity Density MnO Grade
Cryptomelane Earthy Brown -gray 5-6.5 Brittle 4.17-4.41 60%
Hausmannite Resinous Brown-black 5.5 Brittle 4.83-4.85 72%
Hollandite Metallic Silver-Black 4-6 Brittle 4.95 52.8%
Psilomelane submetallic Iron black 5-6 Brittle 4.7 48.8%
Pyrolusite Varies Black-gray 2-6.5 Brittle 5.04-5.08 63.2%
Jacobsite Resinous Brown-Black 5.5-6.5 Brittle 4.76 23.8%
Coronadite Varies Gray-Black 4.5-5 Brittle 4.2-4.5 48.7%
The Bond Work Index for power requirements, to crush and grind manganese ore, ranges from 12
to 16 kWhr/tonne, but when grinding only to exposure can be as low as 6 kWhr/tonne. This is an
approximation of the power required to break the rock from an infinite size to 100 micrometers.
Metallurgical testing was performed on samples collected from the K.Hill Prospect in Botswana
in August and September of 2017 by Dr. Ian M. Flint, Ph.D., P.Eng. These samples were shipped
to Dalhousie university in Nova Scotia, Canada, where sectioned mineralogy work was done on
thin sections randomly taken from the samples using an electron microprobe and an optical
mineralogical microscope. Dr. Flint supervised each stage of the work, including from the site,
and ensured the chain of custody of the samples.
Ian Flint, Ph.D., P.Eng , is the qualified person, as that term is defined by National Instrument 43-
101, on behalf of the Company and has approved the scientific and technical content contained in
this press release.
Additional information and corporate documents may be found on www.sedar.com and on Giyani
Metals Corp. website: http://giyanimetals.com/.
On behalf of the Board of Directors of Giyani Metals Corp.
Duane Parnham, Executive Chairman
Contact:
Giyani Metals Corp.
Robin Birchall
CEO - Director
+447711313019
4844-3358-5994, v. 4
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policies of the TSX Venture Exchange) accepts responsibility for the adequacy or accuracy of this news
release.
Forward-Looking Statements
This news release may contain forward-looking statements including but not limited to comments regarding the timing and
content of upcoming work programs, geological interpretations, receipt of property titles, potential mineral recovery processes,
the financial picture of the Company etc. Forward-looking statements address future events and conditions and therefore, involve
inherent risks and uncertainties. Actual results may differ materially from those currently anticipated in such statement.
GIYANI METALS CORP.
277 LAKESHORE ROAD EAST, OAKVILLE, Ontario L6J 1H9
T:289-837-0066 F: 289-837-1166
www.GIYANIMETALS.com TSX.v-WDG