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File: NR-2018-03-28-TBoli.pdf
NEWS RELEASE Symbol: RZL-TSX.V
T'Boli Gold Mine Exploration Update
March 28 2018 - Vancouver, British Columbia: Rizal Resources Corporation (TSXV: RZL) ("Rizal"
or the "Company") announces that it has filed a technical report in the form prescribed by Canadian
National Instrument 43-101 titled NI 43-101 Technical Report, T'Boli Gold-Silver Project, South Cotabato,
Mindanao, Philippines. The report was prepared by Steven Olsen B.Sc.(Hons), M.Sc., MAIG, of Victoria,
Australia. This news release provides summary information from the technical report as well as updates on
the Company's exploration activities at the T'Boli Gold-Silver Project ("T'Boli" or "the Project").
The Company is currently conducting exploration activities at T'Boli for the purpose of defining the
geological controls and the continuity of the gold mineralization that exists at the Project. This work has
focused on the exploration of two defined vein systems known as the north veins and south veins, via a
series of exploration development tunnel's. Work completed to date has now been interpreted and collated
to identify a number of high grade mineralized zones from the exploration development. Based on this
review, over 457m of high grade gold mineralization has now been defined (see Table 1), including the
following highlights:
dot South Vein FW2 22m long with average thickness (true width) of 0.51m and gold grade of 57.7g/t
dot South Vein FW1 18m long with average thickness (true width) of 0.47m and gold grade of 29.7g/t
dot South Vein V3 32m long with average thickness (true width) of 0.68m and gold grade of 23.8g/t
dot South Vein V4 50m long with average thickness (true width) of 1.2m and gold grade of 21g/t
dot North Vein V1 53m long with average thickness (true width) of 1.3m and gold grade of 18.8g/t
To date the exploration development has centered on the north veins, which is the first structure that can be
accessed from the underground development. The north veins have limited drilling information with most
of the technical information at this location derived from the exploration development.
The Company has also commenced trial mining activities in parts of the north veins. The results from the
trial mining activities are still at a preliminary stage with results from the reconciliation of this work
anticipated in the second half of 2018.
In contrast to the north veins, the south veins have received very limited exploration development.
However, the bulk of the more significant prior drilling information exists on the south veins. In addition,
the south veins are interpreted to exist in a more favourable geological location for the formation of high-
grade gold mineralization in comparison with the north veins.
The Company plans to access and commence exploration drives on the south veins in the second quarter of
2018. The exploration development on the south veins is planned to come in close proximity to some of the
more significant drill intercepts recorded in the T'Boli database including drill hole TG038 which returned a
intersection of 8m (true width) @ 14.2g/t gold (uncut).
Note that the T'Boli Project does not have a current Mineral Resource estimate or Mineral Reserves and that
in the absence of a feasibility study of Mineral Reserves demonstrating economic and technical viability is
associated with an increased risk of failure of the mining operations due to increased uncertainty of results.
Mining and processing activity at the T'Boli Project is ongoing on a small-scale basis associated with the
Company's underground exploration activities and this should not be construed as Rizal having made a
commercial production decision.
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Background Information
The exploration development drives that exist at T'Boli, both historically and more recently under the
current management, are within a small portion of a larger complex of mineralized structures that lie
between two major North-West trending faults called the Kematau fault and the Desawo fault (Figure 1).
Figure 1: Plan representing the location of the T'Boli Mine Site and north and south vein structures relative
to the broader regional potential that exists throughout the area between the Kematau fault and the Desawo
fault. The location of grab samples from small scale miners workings and their results are also shown.
Note: Grab samples are selective and an indication of the presence of mineralization only and should not be
taken to represent the average grade of potential Mineral Resources.
The focus of the exploration activities by Rizal over a number of stages has been to define gold
mineralization situated within two broad vein systems known at the north veins and the south veins (Figure
2) located near the TMC Mine Site, highlighted in Figure 1. There are also extensive small-scale mine
workings throughout the broader region at T'Boil, as note in Figure 1, and those workings that may be
suitable for future exploration work but have not received any significant attention in recent years.
Earlier drilling campaigns, which make up the current drill hole database, have identified multiple high-
grade gold intersections underneath an extensive set of surface mine workings close to the TMC Mine Site.
The drilling results are very encouraging in terms of indicating the presence of a large gold system, however
the complexity and large number of gold bearing structures make the interpretation and continuity of the
gold mineralization difficult to confirm with confidence without first exploring them further with
underground development.
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It is for this reason, and also due to the ability to easily access the shallow gold bearing structures, that the
exploration plan for the Project at numerous stages has been to define the gold mineralization via a series of
underground tunnels ("exploration development").
To further validate the gold mineralization defined from the exploration development and to assist with the
Company's cash flow, processing of the material from the exploration development has been undertaken at
its current small-scale processing facility which exists 6.4km from the TMC Mine site at T'Boli.
The aim of the current work program is to confirm the distribution and continuity of the gold mineralization
over the two major vein sets that have been defined at T'Boli leading to a new Mineral Resource estimate in
the second half of 2018.
Local Geology and Mineralized Structures
The gold mineralization at T'Boli is contained within a number of complex vein and breccia zones or
structures which vary considerably in their gold content and are often closely associated with low grade gold
in the surrounding host rock.
There are broad structural "Domains" which are known as the north veins, hosted in a Dacitic rock, and the
south veins, which straddle a Dacite/Volcaniclastic boundary, but are predominantly hosted within a
Volcaniclastic rock (Figure 2).
Figure 2: Plan projection of the mapped veins and structures from the exploration development at the
550mRL level. The two separate vein systems are highlighted with the referenced location of the vertical
long sections for both the north veins (A-A') and south veins (B-B') as shown in figures 3 and 4 respectively.
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Each domain has a set of structures/narrow veins which are predominantly striking in an east-west
orientation and are dipping steeply to south, at between 60 degrees and 90 degrees. In some locations a
complex series of veins have developed over an area covering a total of 30m in width. Not all of the vein
structures contain high grade gold mineralization, and progress continues to be made with regard to
understanding the controls on the higher-grade sections of the veins and structures that exist at T'Boli.
When the mineralized structures come close together, there is often low-grade mineralization lying in the
altered host rock between the structures. When this has been observed in the exploration development the
size of the development has often increased in an attempt to capture all of the gold mineralization where
possible.
The current level of geological information gathered to date is greater in the north veins, as this location is
easier to access and has been developed and explored over a much greater strike length than the south veins.
In contrast to the location of the exploration development, the drilling information has focused on testing the
south veins, which exist in an interpreted more favourable host rock for the formation of gold
mineralization. There are very few drill intersections that exist over the broader potential area on the north
veins outside of the existing exploration development.
Exploration Development Results
At the north veins, the mineralization occurs as multiple zones over a 300m strike length. Development has
also occurred in the hangingwall and footwall to the main structure, particularly where the sampling has
indicated that high grade gold exists in these other structures. In total, there has been over 700m of
development around the 550mRL level over multiple stages to define 210m of high grade mineralization,
which exists within a 300m strike length corridor (Figure 3). In addition, development has commenced at
the 525mRL level and also the 515mRL level with the development focused vertically beneath the higher-
grade mineralization defined on the 550mRL level.
Figure 3: Vertical Long Section (view looking to the North) representation of the main structure developed
in the north veins. The information obtained from the exploration development has been collated into
geological domains that represent the higher-grade portions of the uncovered mineralized structures. The
results from each domain are represented on this long section in their respective position highlighting the
total strike length, average thickness (in meters) and weighted average (uncut) gold grade (g/t).
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At the 515mRL level, the exploration development has accessed a position where two structures exist close
together. Based on an interpretation that this larger mineralized position extends up to the 550mRL level,
the decision was made to commence trial bulk mining methods. This trial mining is still at an early stage of
assessment with mining and reconciliation work ongoing.
It is still considered that many of the narrow, mineralized structures will be mined using narrow vein mining
techniques. However, a more modern assessment of this approach remains to be tested. To this end, the
Company has identified 3 locations on the north vein that will soon be available for trial narrow vein mining.
Some further exploration development is required on the 525mRL level on the north vein to complete the
access for 2 of these trial mining locations.
For the south veins the mineralization appears to exist in sections over a strike length of at least 350m, with
the high-grade zones interpreted at this stage to cumulatively total a strike length of approximately 200m.
The development on the south veins is not as extensive as the exploration development on the north veins,
however, there has been some smaller sections accessed over multiple stages, with multiple access points.
At this stage, the drilling information indicates that high grade gold mineralization still exists to the east
beyond the current extent of the level development.
Exploration development is planned to access the south veins close to the defined position of the prior drill
hole, TG038 which has a reported drill intersection of 8m (true width) at an average grade of 14.2g/t.
Planned Development
Figure 4: Vertical Long Section (View looking to the North) representation of the main structure developed
in the south veins. All prior drill hole intersections that exist within 150m depth of the of the previous
development have been projected onto this longsection, with the interval length adjusted for their estimated
true width. The information obtained from the exploration development has been collated into geological
domains that represent the higher-grade portions of the uncovered mineralized structures. The results from
each domain are represented on this long section in their respective position highlighting the total strike
length, average thickness (in meters) and weighted average (uncut) gold grade (in grams per ton).
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Table 1 is a summary of the high-grade mineralized zones that have been defined to date from the
exploration development activity at the T'Boli Project.
Location Defined high-grade Structures ~550m RL
Strike Length Average Width Average Grade
(m) (m) (g/t gold)
North Vein 53 1.3 18.8
North HW1 110 0.36 17.5
North Vein 18 1.18 7.1
North Bulk 100 5 Results Pending
South Vein 32 1.3 14.5
South Vein 22 0.46 18.8
South FW1 18 0.47 29.7
South FW2 22 0.51 57.7
South Vein 32 0.68 23.8
South Vein - Est. 50+
Planned
TOTAL 457
Table 1: Summary of defined higher-grade mineralized zones that are considered potential locations for
future mining and to aid the focus of the level development at the levels underneath the 550mRL. All
reported average widths are true widths and all average grades are un-cut. The dominant interpreted
structure at both the north veins and south veins is reported as North Vein and South Vein respectively.
Veins/Mineralized Structures that exists immediately South of the more dominant Vein at each location are
defined as a Hangingwall ("HW") vein. Veins/Mineralized Structures that exist immediately to the North of
the more dominant vein at each location are defined as a Footwall ("FW") vein.
Future Work Program
The Company has made substantial progress over the past 12 months since it first commenced exploration
development into the mineralized structures at T'Boli. The goals for this ongoing work program are to
develop, explore and define the controls on the gold mineralization across the north veins and south veins.
The results from this work will be analyzed with the objective of preparing a new Mineral Resource estimate
by the end of 2018.
The Company will provide regular updates on the results of its exploration activities, with particular
attention paid to the results identified from the south veins, which is considered be located in a more
favourable location for the development of high grade gold mineralization.
All of the information gathered as part of the Company's exploration activities at the TMC Mine Site and
associated processing of the material derived from these activities will enable the Company to gather
valuable information for any future proposed production activities.
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Quality Control
Channel sampling undertaken within the exploration development drives are consistently taken on a
horizontal line as rock chip samples between 1m to 1.5m above the floor of the development which is
approximately perpendicular to the dominant dip of the mineralized structures. The dominant geological
domains and mineralized structures dip to the South at between 60 and 90 degrees. Sample intervals vary
from between 0.2m and 1.0m in width with the sample boundaries obeying the observed geological contacts.
Drill cores from the prior drilling programs were HQ, NQ and BQ in size. For drill core that was HQ or NQ
size, selected sampling intervals were sub-sampled using different techniques depending on the nature of the
drill core. Competent drill core was cut longitudinally in half with a core saw; Clay dominant or soft core
was divided into two halves using a spatula; Broken core or rubble was physically separated into 2 separate
and equal halves. For drill core that was BQ in size, the whole sample interval was taken for analysis.
Sample intervals taken were predominantly at 1m or less, with sample interval boundaries selected to ensure
that the sampling interval did not cross over a defined geological contact.
Of particular note with regard to the quality control of the prior drill core samples is that for many of the
sampling locations the core recovery was reported to be poor. Based on the observations of the mineralized
structures from the underground development this is interpreted to be a result of some clay rich sections that
occur in close proximity to the mineralized structures. The underground channel sampling has also
identified that the clay rich locations often contain significant gold mineralization. The above observations
indicate that the core loss recorded in the prior drilling is due to the poor capture of the mineralized clay rich
material surrounding parts of the larger structures at T'Boli. The loss of mineralized material may result in
an underestimation of the gold content within some of the reported drilling intercepts.
Prior drilling samples were analysed by Interteck, which is an independent external laboratory, with the
processing laboratory situated in Manila, Philipppines.
Sampling preparation and analysis for the channel samples are undertaken at the Company's internal
laboratory situated at T'Boli.
For both the prior drilling and the current channel samples from the exploration development, the Company
has maintained quality control systems which includes the insertion of blanks, standards and pulp duplicates.
The control samples from the prior drilling information have been reviewed for any possible lab bias. The
review has concluded that there are no material biases or inaccuracies in the assay database, with additional
check data required to confirm an observation that there may be a slight bias of results on the low side
resulting in a slight understatement in the reported gold assay information.
Qualified Persons
Steven Olsen, member of AIG, has reviewed the exploration data and prepared the scientific and technical
information regarding exploration results contained within this news release. Steven Olsen, an Independent
Consultant, is a "Qualified Person" as such term is defined in National Instrument 43-101 and he has
verified and approved the contents of this news release.
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About Rizal
Rizal is an exploration Company with a focus on its flagship T'Boli Gold Project situated in the Philippines.
The Company is using underground development to explore and define the extensive gold mineralization
that exists at T'Boli. The Company's current objectives are to complete exploration work with a view to
establishing a current mineral resource estimate, while generating short term cash flow from small scale
production at its existing processing plant.
Peter Main
President and CEO
pmain@rizalresources.com
For further information please visit our website at www.rizalresources.com,
Email us at info@rizalresources.com,
Phone: 778-370-1372 Fax: 604-608-5442
Neither TSX Venture Exchange nor its Regulation Services Provider (as that term is defined in
the policies of the TSX Venture Exchange) accepts responsibility for the adequacy or accuracy
of this release.
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