TIDMSRES
RNS Number : 6216T
Sunrise Resources Plc
16 October 2017
SUNRISE RESOURCES PLC
("Sunrise" or "the Company")
16 October 2017
FURTHER POSITIVE TESTWORK & NEW DISCOVERY
CS POZZOLAN-PERLITE PROJECT, NEVADA
Sunrise Resources plc, the AIM-traded company focusing on the
development of its CS Pozzolan-Perlite Project in Nevada, USA, is
pleased to provide this positive update on testing of samples from
its recently completed trenching and drill programmes and to
announce the discovery and staking of a new perlite (pozzolan)
occurrence in Nevada.
Highlights
-- Additional pozzolan Strength Against Index ("SAI") test
results received for drill and trench samples:
Ø 28 day SAI results for all Tuff Zone drill samples show
increased strengths from the previously reported 7 day results,
consistent with the performance of high quality natural
pozzolan.
Ø 7 day SAI results for all Main Zone drill samples exceed the
28 day strength requirements of ASTM C618 after only 7 days curing.
28 day strengths, available for the majority of samples, also
positive.
Ø Four surface samples from NE Zone return 7 and 28 day SAI
results consistent with high quality natural pozzolan.
Ø 7 day SAI results complete for all trenches but one. All
samples tested exceed the 28 day strength requirements of ASTM C618
at 7 days. Where available, 28 day results also positive.
-- Perlite expansion testing results now available for all drill
samples from the Main Zone perlite/pozzolan deposit.
Ø Results support those previously reported for a smaller number
of duplicate samples.
Ø Application-specific expansion testing now underway.
-- In-house exploration techniques result in discovery of new
perlite/pozzolan deposit in Nevada.
Commenting today, Executive Chairman Patrick Cheetham said: "I
am delighted to be reporting further good news from our CS
Pozzolan-Perlite Project with positive implications for the
production of both perlite and pozzolan. To date virtually every
sample we have tested across a very wide area has met the key (1)
ASTM requirements for pozzolanic activity (chemical composition)
and strength. We are now moving to a more advanced stage of
pozzolan and perlite testing which we expect will help us narrow
down the initial mining areas. I am also pleased to be announcing a
new perlite discovery made as a result of in-house proprietary
exploration techniques which, I believe, give us a competitive edge
in exploration for these types of deposit."
Further information
Sunrise Resources plc
Patrick Cheetham, Executive
Chairman Tel: +44 (0)1625 838 884
Northland Capital Partners
Limited
Nominated Adviser & Broker
Edward Hutton/David Hignell
John Howes/Rob Rees Tel: +44 (0)20 3861 6625
Beaufort Securities Limited
Joint Broker
Jon Belliss Tel: +44 (0)20 7382 8300
Detailed Information.
Pozzolan Testing
The Company's pozzolan testing to date has focused on the key
strength parameters required by ASTM standard C618 which applies to
both natural pozzolans and coal fly ash.
In this test mortar cubes are made with partial substitution of
Portland Cement by CS natural pozzolan and the strength of the
mortar is compared to an "index" mortar produced using only
Portland Cement. The strength of the mortars are measured after 7
days and 28 days curing (aging) to generate 7 day and 28 day
measures of Strength Against Index ("SAI") for the mortar
containing natural pozzolan.
Drill samples - Tuff Zone
On 4 September 2017 the Company announced interim 7 day SAI
results for drill samples from the Tuff Zone which showed that, in
all cases, the pozzolan strength requirements of ASTM C618 required
after 28 days curing had been exceeded after only 7 days
curing.
28 day SAI results are now available and demonstrate that the
mortars made using Tuff Zone drill samples show good continuing
strength gain consistent with the performance of a high quality
natural pozzolan.
Drill samples - Main Zone
7 day SAI results are now available for all composite drill
samples of perlite and tephra from the five holes drilled in the
Main Zone, and 28 day results are available for the majority.
As with the Tuff Zone, in all cases the 28 day strength
requirements of ASTM C618 were exceeded after only 7 days curing
and the available 28 day SAI results also demonstrate continued
strength gain consistent with the performance of a high quality
natural pozzolan.
Surface samples - NE Zone
In July 2017 four surface samples were collected from the NE
Zone, a more recent discovery of tephra north-east of the Main
Zone. (For a discussion of geology see release of 4 September
2017).
Both 7 and 28 day SAI results have been received and are
consistent with the positive results from the Tuff Zone and Main
Zone.
Trench samples
The trenching programme carried out in July tested more
speculative areas peripheral and to the east and north of the Main
Zone for occurrences of perlite and pozzolan. Eleven trenches were
completed mainly in the transition zone from perlite to tephra and
in the tephra/silty tuff zones.
Preliminary trenching results were reported in the news release
of 4 September 2017. Since then 7 day SAI results have been
received for all but one trench sample and some 28 day SAI results
have also been received. All 7day results exceed the 28 day
strength required by ASTM C618 and available 28 day results show
the continuing strength gains with time required of a high quality
pozzolan.
The trenching results, taken together with results from outcrop
samples, demonstrate that all of the perlite, tuff and tephra
samples tested to date can be considered to be natural pozzolans
meeting the strength requirements of ASTM C618. They also confirm
that the Main Zone remains open to the south, extends further north
and east than previously defined and that the Main Zone and NE Zone
are part of a continuous sequence of adjacent and overlapping zones
of pozzolanic perlite and tephra.
Pozzolan testing of drill and trench samples is now progressing
to include ASTM certification and testing of a wider range of
properties that can improve the performance of concretes through
partial substitution of Portland Cement. This includes water
demand, mitigation of the deleterious alkali-silica reaction that
affects concretes made using only Portland cement, resisting
sulphate attack and improving long term strength and
durability.
Perlite Testing
Results are now available for expansion testing of the
twenty-nine composite drill samples submitted to independent
laboratory In-Mat-Lab in Greece.
These results support the very positive conclusions drawn from
the results reported on 4 September for a more limited number of
duplicate samples tested at the New Mexico Bureau of Geology and
Mineral Resources laboratory.
Testing to date has been conducted on raw material sized in the
range +0.075-0.3mm - a size range typical for raw material expanded
commercially for use in various construction industry applications
which account for the bulk of raw perlite demand. In commercial
practice perlite raw material is produced in a range of size
fractions for a wider range of applications, including horticulture
where a particularly coarse raw material is required.
In-Mat-Lab has made recommendations for application-specific
testing and a further testwork programme has been agreed. This work
has now started and results are expected within the coming
months.
The more advanced stages of pozzolan and perlite testing will
allow the Company to better define the target markets for its
pozzolan and perlite, provide further information for potential
customers, and allow the development of a mine plan based on the
best performing materials.
New Discovery
The Company's original discovery of the CS Project was made
through the application of a specific proprietary exploration
technique.
As part of its regional Pozz Project, the Company has refined
the technique and is now applying it over other geologically
prospective areas in Nevada to identify targets of interest.
Over the past few months a number of targets were selected for
follow-up sampling and as a result of that work a new
perlite/pozzolan occurrence has been discovered.
The occurrence comprises a conical outcrop of glassy volcanic
rock having a base diameter of approximately 400m and a height of
up to 45m above the surrounding plain, suggesting good tonnage
potential.
A sample from the deposit has been tested by In-Mat-Lab for its
perlitic expansion properties with very good results showing
potential for a range of perlite applications. Its pozzolanic
properties are now being tested, and a sample will be included in
the application-specific perlite testing programme now underway on
CS Project drill samples.
A group of Mining Claims has been staked to secure this new
prospect which has been named the "NewPerl Prospect."
S
About Natural Pozzolan
Pozzolan is a cementitious material that can partially replace
ordinary Portland cement in cement and concrete mixes in amounts up
to 35%. Natural pozzolans, therefore, have strong "green"
credentials as the production of Portland cement is responsible for
5% of the global man-made carbon dioxide emissions with nearly one
tonne of carbon dioxide (CO(2) ) generated for each tonne of cement
produced. Natural pozzolans can also improve the strength and
chemical resistance of concrete. Natural pozzolans can also replace
industrial by-product pozzolans in cement such as coal fly ash. The
availability and quality of fly ash is under threat as coal-fired
power stations are phased out in favour of natural gas plants and
fly ash quality becomes more variable due to increased emission
control legislation.
About Perlite
Perlite is a glassy raw material which, when heated in a
furnace, pops like popcorn and expands by up to 20 times in volume
into a white or pale coloured, low density material. Expanded
perlite is used in various industrial and household applications
such as insulation, paint texturing, building materials, filter
aids, insulating industrial cryogenic storage vessels and as a
potting medium in gardening and horticulture to aid water retention
and aeration of the soil. Some perlites can also be used as a
natural pozzolan.
Notes:
1. ASTM International is a globally recognized leader in the
development and delivery of voluntary consensus standards. ASTM
C618 is the standard for natural pozzolan.
2. The news release may contain certain statements and
expressions of belief, expectation or opinion which are
forward-looking statements, and which relate, inter alia, to the
Company's proposed strategy, plans and objectives or to the
expectations or intentions of the Company's directors. Such
forward-looking statements involve known and unknown risks,
uncertainties and other important factors beyond the control of the
Company that could cause the actual performance or achievements of
the Company to be materially different from such forward-looking
statements. Accordingly, you should not rely unduly on any
forward-looking statements and save as required by the AIM Rules
for Companies or by law, the Company does not accept any obligation
to disseminate any updates or revisions to such forward-looking
statements.
3. This announcement contains inside information.
4. The information in this release has been compiled and
reviewed by Mr. Patrick Cheetham (MIMMM, MAusIMM) who is a
qualified person for the purposes of the AIM Note for Mining and
Oil & Gas Companies. Mr. Cheetham is a Member of the Institute
of Materials, Minerals & Mining and also a member of the
Australasian Institute of Mining & Metallurgy.
Shares in the Company trade on AIM. EPIC: "SRES". Website:
www.sunriseresourcesplc.com
This information is provided by RNS
The company news service from the London Stock Exchange
END
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