TIDMHMI
RNS Number : 9918S
Harvest Minerals Limited
30 December 2016
30 December 2016
Harvest Minerals Limited
("Harvest" or the "Company")
ARAPUA FERTILISER PROJECT UPDATE
Results of the Second Air Core Drilling Programme at Maximus
Prospect
Harvest Minerals Limited ("Harvest" or "the Company") is pleased
to announce the completion of the second air core drilling
programme at the Maximus Prospect, part of its Arapua Fertilizer
Project ("Arapua"), located in the Brazilian state of Minas
Gerais.
The results from the second drilling programme, which firstly
focused on the extension of the area drilled in the previous
drilling stage, confirms the continuity of the weathered kamafugite
ore body with consistent K(2) O, P(2) O(5) , CaO and MgO
grades.
Additional holes were drilled over outcropping kamafugite which
previously have been mapped by the Company's geologists. These
holes had a regional spacing and produced results compatible to the
grades in the current resource area, indicating the potential to
further substantially increase the mineral resources.
Drilling Results Highlights:
-- A total 39 vertical air core drill holes (MXAC026 to MXAC064)
have been completed to a depth of between 6 to 40 meters, providing
a total of approximately 775m of drilling data.
-- As in the first drilling programme, drilling ceased when
unweathered kamafugite was intersected.
-- All drill holes intersected consistent phosphate (P(2) O(5)
), potassium oxide (K(2) O), calcium oxide CaO and magnesium oxide
MgO enriched clay weathered kamafugite rocks
-- Results from samples submitted to SGS Geosol, which is based
in Belo Horizonte, indicate average mineralized interceptions
ranging from 1.23% to 5.93% P(2) O(5) and from 1.86% to 5.86% K(2)
O.
Next Steps
Harvest has retained the services of independent consultants
GE21 (formerly Coffey Mining Brazil) to revise the current resource
using the additional drill data. GE21 will be on site in
mid-January to check the results and an updated resource is
expected by mid February.
Commenting on the update, Executive Chairman of Harvest, Brian
McMaster stated:
"These latest drilling results confirm the consistent quality of
the mineralisation at Maximus. As discussed we have retained
independent consultants GE21 to revise the current resource using
this additional drill data. This is expected to be completed by mid
February and should allow us to increase the potential production
well above the 100Ktpa over 7 years, based on the current resource
as detailed in the scoping study. The wider spaced drilling,
including of the (non-diamondiferous) kimberlite, indicates that
the grades and thickness of the weathered mineralisation are
consistent throughout the entire area we previously mapped and
should provide enough material to support any future expansion
plans.
This concludes, what has been a very busy 2016, during which we
have been able to accomplish and surpass all our stated objectives.
Harvest has progressed from field mapping to production in under a
year. Highlights for the year include, completing a capital
raising, producing a maiden resource, completing a scoping study,
receiving both our environmental and trial mining permits,
completing civil works, commencing trial mining and signing a LOI
for off take during 2017. Additionally, this has been done on a
tight budget. This has been an exceptional achievement by the whole
team. We will look to build on this next year.
In addition to the direct team at Harvest, none of this would be
possible without the support of our broader team, namely the owners
of the company, our shareholders and the advisory teams listed
below. On behalf of Harvest I wish you all a happy holiday period
and a safe and happy 2017."
This announcement contains inside information for the purposes
of Article 7 of EU Regulation 596/2014.
Enquiries:
Harvest Minerals Brian McMaster, Chairman Tel: +44 20 7495 4323
Limited
Strand Hanson Limited Rory Murphy Tel: +44 20 7409 3494
(Nominated & Financial James Spinney
Adviser) Ritchie Balmer
Mirabaud Securities Rory Scott Tel: + 44 20 7878
LLP (Broker) 3360
Beaufort Securities Jon Bellis
Ltd Tel: + 44 20 7382
(Joint Broker) 8300
Grant Barker
Whitman-Howard Ltd
(Equity Advisors) Tel: + 44 20 7659
1225
Bobby Morse
Buchanan Anna Michniewicz
(Financial PR)
Tel: +44 20 7466 5000
Background:
The Arapua Fertilizer Project is strategically located in the
Brazilian Cerrado, 360 km to NW from Belo Horizonte, the capital of
Minas Gerais State. The project consists of seven granted
exploration licenses covering total area of 12,997.6 hectares,
divided across both the Arapua and Maximus prospects.
The initial resource estimate, based on the first air core
drilling programme of only the 3% of the known weathered
kamafugite, identified a JORC (2012) compliant total Indicated
resource of 883 Kt at 4.21% K2O and 3.53% P(2) O5 at a 3.5% K(2) O
cut-off, with an additional exploration potential within the
drilled area of between 3.0 to 3.5Mt with average grades from 2.7
to 3.5% K(2) O at 1% cut-off.
Harvest has progressed from field mapping to production in under
a year. Highlights during 2016 included, completing a capital
raising, producing a maiden resource, completing a scoping study,
receiving both our environmental and trial mining permits,
completing civil works, commencing trial mining and signing a LOI
for off-take during 2017, subject to satisfactory results from
ongoing agronomic testwork.
The preliminary results of the agronomic testwork, mainly from
chemical and physical specifiations, were all well within the
required minimum specifications and guarantees for the soil
remineraliser product.
Harvest has recently started further agronomic testwork and
growth tests with two different laboratories and a major coffee
producer in the region. The latest drilling campaign aims to
increase the current resource, to extend the project life and
increase the potential production capacity above that proposed in
the scoping study.
Air Core Drilling
The second air core drill programme at the Maximus Prospect
focused on targeting the extension of weathered kamafugite rocks
with K(2) O, P(2) O(5) , CaO and MgO grades detected in the
previous drilling campaign. The programme finished with a total of
775.05 drilled meters distributed in 39 vertical drill holes. The
holes were distributed as resumed below (Figure 01):
-- 26 drill holes were distributed in a grid area, with spacing
of 50m to 90m one from another, located to the east of the current
resource area.
-- 8 drill holes regionally distributed over the known
kamafugite as mapped by the Company's geologists.
-- 5 drill holes were located in the kimberlite body at the
northwest portion of the project areawhich had previously shown
P(2) O(5) and K(2) O values from auger sampling.
Click here to view Figure 01 - Maximus Prospect - Air core
drilling location.
http://www.rns-pdf.londonstockexchange.com/rns/9918S_-2016-12-29.pdf
Including the drill holes of the first campaign (25 holes) and
the second campaign (26 holes), a total area of approximately
222,400 m(2) was covered in the west portion of Serra do Maxixe
plateau (Figure 02). The holes drilled to extend the current
resource were between 1,000 and 1,057 meters in elevation and
reached depths varying from 4.0 m to 40.0 meters. All holes
intercepted weathered kamafugitic rocks from the top to the bottom
of the holes and stopped when intersecting hard kamafugitic
rock.
Click here to view Figure 02 - Maximus Prospect - Air core holes
distributed with grid spacing.
http://www.rns-pdf.londonstockexchange.com/rns/9918S_-2016-12-29.pdf
The regional holes were drilled between elevations of 1,004 and
1,046 meters and reached depths varying from 6.0m to 27.0m. Most of
the holes finished into unweathered kamafugitic rock. The only
exceptions were holes MXAC053 and MXAC055 which intersected
sedimentary rocks of Areado Group, stratigraphically below the
kamafugitic unit, at depths of 11m and 15m.
An additional five holes were drilled over the kimberlite pipe
located at the northwest portion of the project area. These holes
were terminated at depths between 6.5m and 14.0m and intercepted
weathered kimberlite rock.
Sample Procedures
Samples from the air core drilling had been recovered directly
from the cyclone at each 1 m of drilling advance in numbered
plastic bags. Once the samples were received at the field
facilities, they were identified and logged. A total of 775
samples, representative of the 775.05 drilled meters were
collected.
After geological logging, sample preparation was systematically
done at the Company's field facilities. Sample preparation
procedures included, drying, crushing and screening (at 4mm),
homogenization and splitting. A small portion with approximately
250gr, representative of each 1m interval sample, was collected to
be preserved in the archives.
Prior to sending to the laboratory, samples had been composited
in intervals varying from a minimum of 1 m to a maximum 4 m, in
compliance to the geological description. A total of 303 samples
were composited and dispatched to the SGS Geosol Lab for chemical
analysis of SiO(2) , Al(2) O(3) , Fe(2) O(3) , CaO, MgO, TiO(2) ,
P(2) O(5) , Na(2) O, K(2) O and MnO.
QA/QC samples, including reference materials, blanks, and
duplicates, were systematically introduced into the batches sent to
the lab iat a nominal rate of 2:10. This practice has been useful
in determining the quality of sample collection, sample preparation
and lab analytical precision.
Drilling Results
All drill holes intersected widespread phosphate (P(2) O(5) )
and potassium oxide (K(2) O) enriched clay weathered kamafugite
rocks. Results from air core samples submitted to SGS Geosol lab
had sample grades ranging from 0.79% to 10.87% P(2) O(5) and 1.01%
to 6.83% K(2) O.
The weathered mineralized interceptions range from 6.0m to 40.0m
in thickness. The composite grades ranged from 1.23% to 5.93% P(2)
O(5) and from 1.86% to 5.86% K(2) O (Table 01). The mineralization
is associated with kamafugite saprolite rocks, with the higher
grades appearing to be related to the breccia facies within the
kamafugite rocks.
Hole Depth Depth Length P(2) O(5) K(2) O Intersection Comments
ID From To (m) (m) Intersection grade (%)
(m) grade
(%)
----------- ------ -------- ------- -------------- -------------------- ------------------------
Including 2m @ 4.24%
P(2) O(5) and 4.26%
K(2) O (from 5.0 to
MXAC026 0.0 10.0 10.0 3.86 3.29 7.0m)
----------- ------ -------- ------- -------------- -------------------- ------------------------
Including 3m @ 3.11%
P(2) O(5) and 5.43%
K(2) O (from 3.0 to
MXAC027 0.0 7.5 7.5 2.82 4.48 6.0m)
----------- ------ -------- ------- -------------- -------------------- ------------------------
Including 4m @ 4.67%
P(2) O(5) and 5.39%
K(2) O (from 7.0 to
MXAC028 7.0 17.0 10.0 3.79 4.52 11.0m)
----------- ------ -------- ------- -------------- -------------------- ------------------------
MXAC029 0.0 6.0 6.0 3.13 4.66
----------- ------ -------- ------- -------------- -------------------- ------------------------
MXAC030 1.0 7.0 6.0 3.82 4.40
----------- ------ -------- ------- -------------- -------------------- ------------------------
Including 2m @ 9.31%
P(2) O(5) and 4.61%
K(2) O (from 3.0 to
MXAC031 1.0 7.0 6.0 5.69 4.11 5.0m)
----------- ------ -------- ------- -------------- -------------------- ------------------------
Including 7.5m @ 3.38%
P(2) O(5) and 5.42%
K(2) O (from 3.0 to
MXAC032 0.0 23.5 23.5 3.21 4.74 5.0m)
----------- ------ -------- ------- -------------- -------------------- ------------------------
Including 3m @ 3.73%
P(2) O(5) and 4.10%
K(2) O (from 22.0
MXAC033 13.0 33.5 20.5 2.47 3.27 to 25.0m)
----------- ------ -------- ------- -------------- -------------------- ------------------------
MXAC034 0.0 13.0 13.0 5.20 1.86
----------- ------ -------- ------- -------------- -------------------- ------------------------
Including 9.5m @ 2.71%
P(2) O(5) and 4.90%
K(2) O (from 9.0 to
MXAC035 0.0 18.5 18.5 3.12 4.03 18.5m)
----------- ------ -------- ------- -------------- -------------------- ------------------------
MXAC036 2.0 21.0 19.0 3.85 4.81
----------- ------ -------- ------- -------------- -------------------- ------------------------
Including 3m @ 5.56%
P(2) O(5) and 5.42%
K(2) O (from 12.0
MXAC037 0.0 17.0 17.0 3.14 4.45 to 15.0m)
----------- ------ -------- ------- -------------- -------------------- ------------------------
MXAC038 5.0 14.0 9.0 2.52 4.24
----------- ------ -------- ------- -------------- -------------------- ------------------------
MXAC039 4.0 14.0 10.0 1.35 3.68
----------- ------ -------- ------- -------------- -------------------- ------------------------
MXAC040 3.0 5.0 2.0 1.60 4.94
----------- ------ -------- ------- -------------- -------------------- ------------------------
MXAC041 4.0 26.0 22.0 1.94 2.53
----------- ------ -------- ------- -------------- -------------------- ------------------------
Including 6.0m @ 10.07%
P(2) O(5) and 5.12%
K(2) O (from 16.0
MXAC042 10.0 26.0 16.0 5.93 3.54 to 22.0m)
----------- ------ -------- ------- -------------- -------------------- ------------------------
Including 10m @ 4.00%
P(2) O(5) and 3.80%
K(2) O (from 12.0
MXAC043 0.0 29.0 29.0 3.34 3.44 to 15.0m)
----------- ------ -------- ------- -------------- -------------------- ------------------------
Including 7.75m @
3.47% P(2) O(5) and
4.19% K(2) O (from
MXAC044 24.0 38.75 14.75 2.62 3.72 31.0 to 38.75m)
----------- ------ -------- ------- -------------- -------------------- ------------------------
MXAC045 4.0 27.0 23.0 2.45 3.29
----------- ------ -------- ------- -------------- -------------------- ------------------------
MXAC046 3.0 30.0 27.0 2.32 4.22
----------- ------ -------- ------- -------------- -------------------- ------------------------
MXAC047 4.0 29.0 25.0 1.74 3.86
----------- ------ -------- ------- -------------- -------------------- ------------------------
MXAC048 0.0 14.0 14.0 3.56 3.23
----------- ------ -------- ------- -------------- -------------------- ------------------------
MXAC049 0.0 15.0 15.0 1.60 2.53
----------- ------ -------- ------- -------------- -------------------- ------------------------
MXAC050 0.0 9.0 9.0 3.97 3.24
----------- ------ -------- ------- -------------- -------------------- ------------------------
Including 6.0m @ 2.32%
P(2) O(5) and 4.29%
K(2) O (from 21.0
MXAC051* 0.0 27.0 27.0 2.44 3.32 to 27.0m)
----------- ------ -------- ------- -------------- -------------------- ------------------------
Including 3.0m @ 2.56%
P(2) O(5) and 3.23%
K(2) O (from 8.0 to
MXAC052* 0.0 11.0 11.0 2.56 3.23 11.0m)
----------- ------ -------- ------- -------------- -------------------- ------------------------
Including 3.0m @ 1.86%
P(2) O(5) and 4.17%
K(2) O (from 4.0 to
MXAC053* 0.0 11.0 11.0 2.00 3.01 7.0m)
----------- ------ -------- ------- -------------- -------------------- ------------------------
MXAC054* 0.0 15.0 15.0 1.76 2.27
----------- ------ -------- ------- -------------- -------------------- ------------------------
Including 4.0m @ 3.08%
P(2) O(5) and 4.38%
K(2) O (from 8.0 to
MXAC055* 4.0 15.0 11.0 2.56 3.33 12.0m)
----------- ------ -------- ------- -------------- -------------------- ------------------------
MXAC056* 2.0 12.0 10.0 1.98 4.25
----------- ------ -------- ------- -------------- -------------------- ------------------------
Including 4.0m @ 1.35%
P(2) O(5) and 5.09%
K(2) O (from 16.0
MXAC057* 5.0 20.0 15.0 1.23 3.11 to 20.0m)
----------- ------ -------- ------- -------------- -------------------- ------------------------
MXAC058* 0.0 6.0 6.0 2.10 5.76
----------- ------ -------- ------- -------------- -------------------- ------------------------
Including 12.0m @
2.76% P(2) O(5) and
4.61% K(2) O (from
MXAC059 0.0 40.0 40.0 3.09 3.44 28.0 to 40.0m)
----------- ------ -------- ------- -------------- -------------------- ------------------------
MXAC060** 0.0 6.5 6.5 1.25 4.22
----------- ------ -------- ------- -------------- -------------------- ------------------------
MXAC061** 0.0 7.0 7.0 1.85 5.86
----------- ------ -------- ------- -------------- -------------------- ------------------------
MXAC062** 0.0 10.0 10.0 1.52 4.54
----------- ------ -------- ------- -------------- -------------------- ------------------------
MXAC063** 0.0 10.0 10.0 1.71 3.30
----------- ------ -------- ------- -------------- -------------------- ------------------------
MXAC064** 0.0 10.0 10.0 1.42 3.30
----------- ------ -------- ------- -------------- -------------------- ------------------------
*air core holes located with a regional spacing. ** air core
holes located over the kimberlite.
Table 01 - Maximus Prospect - Air core drill holes mineralized
interceptions (2(nd) drilling campaign).
The CaO and MgO grades detected in the kamafugite weathered
rocks range from 0.16% to 17.80% and from 2.39% to 17.30%,
respectively.
Results for QA/AC samples, including blanks, duplicates and
standards were all as expected.
COMPETENT PERSON STATEMENT
The technical information in this release which relates to the
Exploration Target and exploration results is based on compiled and
reviewed data by Mr. Paulo Brito. Mr. Brito is a consulting
geologist for Harvest Minerals Limited and is a Member of
AusIMM-The Minerals Institute, as well as, a Member of Australian
Institute of Geoscientists. Mr. Brito has sufficient experience
which is relevant to the style of mineralization and type of
deposit under consideration and to the activity which is being
undertaken to qualify as a Competent Person as defined in the 2012
Edition of the "Australasian Code for Reporting of Exploration
Results, Mineral Resources and Ore Reserves". Mr. Brito consents to
the inclusion in the release of the matters based on their
information in the form and context in which it appears. Mr. Brito
accepts responsibility for the accuracy of the statements disclosed
in this release.
This information is provided by RNS
The company news service from the London Stock Exchange
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