RTG Announces High Grade Intercepts and New Style of Mineralisation at Bunawan Project Announcement to the Toronto Stock Exchange and Australian Securities Exchange
Level 2, 338 Barker Road
Subiaco WA 6008
Phone: +61 8 6489 2900
www.rtgmining.com
ABN: 70 164 362 850
NOT FOR DISTRIBUTION TO UNITED STATES NEWS WIRE SERVICES OR FOR
DISSEMINATION IN THE UNITED STATES
RTG ANNOUNCES HIGH GRADE INTERCEPTS AND NEW STYLE OF MINERALISATION AT
BUNAWAN PROJECT
ANNOUNCEMENT TO THE TORONTO STOCK EXCHANGE
AND AUSTRALIAN SECURITIES EXCHANGE
18 APRIL 2017
The Board of RTG Mining Inc. (“RTG”, “the Company”) ( TSX Code: RTG, ASX Code: RTG )
announces the results of the diamond drilling program at the Bunawan Project in the Philippines
including intercepted high grade mineralization intervals, with 9.0m @ 2.02/t Au.
Drillhole From To Intercept (m) Au g/t Mineralisation
Core
Recovery (%)
BDH10 62.00 64.00 2.00 2.94 Diatreme Breccia 100.00
and 163.40 167.00 3.60 4.58 Diatreme Breccia 100.00
BDH12 108.00 111.00 3.00 1.05
Diatreme Breccia /
Andesite 100.00
BDH14 262.00 264.15 2.15 2.16 Andesite 100.00
BDH15 39.00 48.00 9.00 2.02 Dacite 90.00
including 44.00 48.00 4.00 2.85 Dacite 92.00
and
including 45.00 48.00 3.00 3.43 Dacite 92.00
and
including 45.00 46.00 1.00 6.78 Dacite 75.00
Table 1- Significant Down-hole Intersections (Note that the true width of the mineralization is
not known at this stage)
The results of this program further confirm the presence of breccia/epithermal vein systems within
and below the diatreme that is similar geologically to the nearby Co -O vein system . The discovery
of a favorably mineralized dacite host in BDH15 that is geologically similar to the nearby high-grade
artisanal m ining area also adds to the increased mineral potential of the property. Hydrothermal
alteration assemblage in the dacite sugges ts that it may be a component of a high -sulphidation
system in the general area. With the various geological conditions identified, the region has the
potential to see another major gold discovery.
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Drilling Program
Figure 1. Geological Map showing locations of completed drill holes and artisanal gold workings. Holes of latest
program marked in green
This second phase of reconnaissance drilling (six holes for 1,798.6 meters) was targeted at Induced
Polarization responses coincident with magnetic low signatures and anomalous surface gold
geochemistry. Targets also included extensions of previously identified mineralization/geology. Holes
BDH-10, BDH-11 and BDH -12 were targeted at geophysical responses, whilst holes BDH -13, BDH-
14 and BDH -15 tested extensions of mineralization/geology. Geological mapping and comparison
with diatreme -related mineralisation which is common in the Philippines also provided guidance in
drill hole targeting.
Drilling continued to investigate the extent of mineralization along a corridor marked by artisanal
workings on the southern margin of the Mahunoc diatreme complex. Significantly BDH-10 and BDH-12
has added mineralized continuity about the center of the corridor where previous drilling BDH -06
intercepted 36m @ 1.49g/t including 7m @ 4.18g/t Au (ASX release Feb 2015).
At shallow depths BDH15 intersected a new, previously not seen, style of mineralisa tion characterized
by vuggy silica in intensely silicified dacite. This represents a new style of gold deposition in the
Mahunoc prospect and is similar to the nearby artisanal Red Mountain bonanza -style gold-quartz vein
system.
The drilling has emphasized the significant potential of the area and further confirmed that the
mineralised corridor on the southern margin of the diatreme (marked by extensive shallow artisanal
Page 3 of 14
workings in the diatreme and a coincident, district scale structural zone), is a highly prospective target
area.
BDH-10 intercepted two (2) silicified zones hosted within the diatreme breccia. This style of
mineralization is similar to that intercepted in previous drilling and provided further validation of the
geophysical method with mineralization correlating with resistivity & chargeability anomalism.
BDH-11 intersected several zones containing narrow white vuggy quartz -calcite-pyrite veinlets
associated with later-formed rhodonite crystals. No significant gold mineralization was intersected,
however, a review of lithology and structures encountered in early interpretations suggest that this
drill hole may have missed the targeted structure.
BDH-12 intercepted mineralization in a brecciated andesite with interstitial quartz -calcite. This
crackled zone in andesite is significant as it shows the potential fo r more mineralization styles in the
property. End of hole was at 151.40m and failed to reach the target depth due to downhole conditions
associated with a major fault zone.
BDH-13 intersected a 56 m wide zone of fracture -filled / cross -cutting calcite -quartz with colloidal
silica and grey quartz bands; this is geologically beneath the Pocloy mineralized breccia pipe
workings.
BDH-14 intercepted mineralization in the andesite lava underneath the Imbudo artisanal gold
workings. The m ineralization is characterized by cross-cutting white vuggy calcite -quartz and dark
grey quartz veinlets with ± pyrite ± chalcopyrite ± galena ± sphalerite selvages. This zone represents
the projected extension of supergene-enriched narrow gold-bearing veinlets at Imbudo workings. The
intercept demonstrates that the Imbudo system persists at depth and is characterized by base metal
associated mineralization, supporting further base metal anomalism targeting campaigns within the
prospect.
BDH-15 intercepted intensely silicified dacite with vuggy silica. The dacite lies between the diatreme
breccia and the andesite lava. A quartz -calcite stockwork zone in andesite was also intercepted
towards the bottom of the hole. Mineralisation in this dacite i s dissimilar from that intersected during
the first phase reconnaissance drilling program. In that program, mineralized silicified zones were
found hosted in diatreme breccia interpreted to have been introduced into porous clast -rich zones
within the diatr eme from structurally controlled epithermal vein zones in the andesite below the
diatreme apron such as that intersected in BDH 08. The mineralization in dacite intersected by
BDH15 represents an additional style of gold deposition found in the Mahunoc pro spect area and is
similar to the nearby Red Mountain bonanza -style gold -quartz vein mineralization hosted also in
dacite. The intercept is very exciting as it shows the existence of an additional favorable epithermal
system and host rock located within the property. It should be further targeted in future drilling
programs.
Page 4 of 14
Figure 2. BDH15 & BDH10 interpretive geological cross-section
ABOUT BUNAWAN
The Bunawan Property is located in the east of Mindanao Island in Agusan del Sur province,
approximately 190 km north-northeast of Davao and adjacent to the Davao – Surigao highway.
The Bunawan Project (Figure 3) is centered on a diatreme intrusive complex (Mahunoc di atreme)
approximately five km NE of Medusa Mining’s Co-O mine in eastern Mindanao. Historical production
at the Co-O Mine has demonstrated a significant high grade gold system and there is active artisinal
mining throughout the region which further reinforces the gold potential of the area. A number of the
artisanal mining operations occur within and adjacent to the Mahunoc diatreme and the area is highly
prospective for the discovery of economic epithermal Au -Ag mineralisation of intermediate
sulphidation / carbonate-base metal type.
The ground magnetics and mapping suggest that the southern margin of the diatreme is a relatively
flat-lying apron shallowly overlying andesite wall rock and that Au mineralisation in the diatreme within
the “mineralised corridor“ is derived from veins in the structural zone in the underlying andesite.
Page 5 of 14
Figure 3. Location Plan with Regional Geology Showing
Page 6 of 14
DRILL HOLE INFORMATION
Six holes were drilled for 1,798.6 meters as documented in the table below and shown
in Figure 1.
Hole Easting Northing Elevation Azimuth Dip Depth
B
DH-10
1
77946
91
6629
33
5
3
40
-
45
2
21.1
B
DH-11
1
77850
91
6560
31
9
3
40
-
45
2
36.1
B
DH-12
1
78412
91
6884
39
4
3
40
-
60
1
51.4
B
DH-13
1
78370
91
6640
41
5
3
40
-
60
3
90.0
B
DH-14
1
78199
91
6600
41
8
3
40
-
55
4
00.0
B
DH-15
1
77980
91
6512
34
7
3
40
-
60
4
00.0
Table 2. Drill Hole co-ordinates (WGS84, 52 N) and orientation
QUALIFIED PERSON AND COMPETENT PERSON STATEMENT
The information in this report relating to Exploration Targets, Exploration Results, Mineral Resources
or Ore Reserves is based on information provided to Robert Ayres BSc (Hons) , a Competent Person
who is Member of the Australian Institute of Geoscientist s. Mr Ayres has sufficient experience that is
relevant to the style of mineralisation and type of deposit under consideration and to the activity 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” and to qualify as a
“Qualified Person” under National Instrument 43 -101 – Standards of Disclosure for Mineral Projects
(“NI 43-101”). Mr. Ayres consents to the inclusion in the report of the matters based on his information
in the form and the context in which it appears. Mr. Ayres has verified the data disclosed in this
release, including sampling, analytical and test data underlying the information contained in the
release. Mr. Ayres consents to the inclusion in the report of the matters based on the information he
has been provided and the context in which it appears.
ABOUT RTG MINING INC
RTG Mining Inc. is a mining and exploration company listed on the main board of the Toronto St ock
Exchange and Australian Securities Exchange Limited. RTG is focused on developing the high grade
copper/gold/magnetite Mabilo Project and advancing exploration on the highly prospective Bunawan
Project, both in the Philippines, while also identifying major new projects which will allow the company
to move quickly and safely to production.
RTG has an experienced management team (previously responsible for the development of the
Masbate Gold Mine in the Philippines through CGA Mining Limited), and has B 2Gold as one of its
major shareholders in the Company. B2Gold is a member of both the S&P/TSX Global Gold and
Global Mining Indices.
Page 7 of 14
ENQUIRIES
Australian Contact
President & CEO – Justine Magee
Tel:
+61 8 6489 2900
Fax:
+61 8 6489 2920
Email: [email protected]
CAUTIONARY NOTE REGARDING FORWARD LOOKING STATEMENTS
This announcement includes certain “forward -looking statements” within the meaning of Canadian
securities legislation. Accuracy of mineral resource and mineral reserve estimates and related
assumptions and inherent operating risks, are forward -looking stat ements. Forward -looking
statements involve various risks and uncertainties and are based on certain factors and assumptions.
There can be no assurance that such statements will prove to be accurate, and actual results and
future events could differ materia lly from those anticipated in such statements. Important factors that
could cause actual results to differ materially from RTG’s expectations include uncertainties related to
fluctuations in gold and other commodity prices and currency exchange rates; uncertainties relating to
interpretation of drill results and the geology, continuity and grade of mineral deposits; uncertainty of
estimates of capital and operating costs, recovery rates, production estimates and estimated
economic return; the need for coope ration of government agencies in the development of RTG’s
mineral projects; the need to obtain additional financing to develop RTG’s mineral projects; the
possibility of delay in development programs or in construction projects and uncertainty of meeting
anticipated program milestones for RTG’s mineral projects and other risks and uncertainties disclosed
under the heading “Risk Factors” in RTG’s Annual Information Form for the year ended 31 December
2013 filed with the Canadian securities regulatory authorities on the SEDAR website at sedar.com.
Page 8 of 14
Appendix 1: JORC Code 2012 Edition Table 1
Section 1 Sampling Techniques and Data
Criteria Explanation Commentary
Sampling
techniques
Nature and quality of sampling (e.g. cut
channels, random chips, or specific
specialised industry standard measurement
tools appropriate to the minerals under
investigation, such as down hole gamma
sondes, or handheld XRF instruments, etc).
These examples should not be taken as
limiting the broad meaning of sampling.
The data repor ted is based on sampling of Diamond Drill
core of PQ and HQ diameter. The core was split with a
diamond core saw and half core samples of 1 metre
length or less sent for analysis by an independent ISO
certified laboratory (Intertek Testing Services Philipp ines,
Inc.) in Manila.
Include reference to measures taken to
ensure sample representivity and the
appropriate calibration of any measurement
tools or systems used.
The drilling was reconnaissance in nature and no field
duplicates or certified reference standards (CRM) were
submitted. The laboratory which analysed the samples
conducted extensive check sampling as part of their own
internal QA processes which was repor ted in the assay
sheets.
For the 197 samples submitted Intertek conducted 15
Second Sample analyses (from second splits of the
coarse crushed sample prior to pulverising) and 32
Repeat Sample analyses (a separate split and digest /
Fire assay from the pulverised material) in addition to 1
assays of their own blank material and 36 assays of CRM
standards. The results indicate acceptable accuracy and
repeatability.
Aspects of the determination of
mineralisation that are Material to the Public
Report. In cases where ‘industry standard’
work has been done this would be relatively
simple (e.g. ‘reverse circulation drilling was
used to obtain 1 m samples from which 3
kg was pulverised to produce a 30 g charge
for fire assay’). In other cases more
explanation may be required, such as
where there is coarse gold that has inherent
sampling problems. Unusual commodities
or mineralisation types (e.g. submarine
nodules) may warrant disclosure of detailed
information.
Diamond drill core of PQ and NQ diameter were cut in half
and half core samples submitted to the Laboratory.
Sample intervals were one metre or less. Samples were
crushed and pulverized (95%<75 um). Gold was analysed
by 50 g Fire assay/AAS and Ag, Cu, Pb, Zn and As by
AAS. Residual half core has been retained for reference
and future metallurgical test work . Coarse rejects and
pulps will be retrieved from the laboratory and stored for
future reference and umpire assays.
Drilling
techniques
Drill type (e.g. core, reverse circulation,
open-hole hammer, rotary air blast, auger,
Bangka, sonic, etc.) and details (e.g. core
diameter, triple or standard tube, depth of
diamond tails, face -sampling bi t or other
type, whether core is oriented and if so, by
what method, etc.).
Drilling was by PQ HQ and NQ diameter, triple tube
diamond core. The hole collars were surveyed (GPS) but
down hole orientation surveys were not conducted and
the core was not orientated.
Drill sample
recovery
Method of recording and assessing core
and chip sample recoveries and results
assessed.
Core recovery was initially measured on site by trained
technicians and again in the core shed by the core shed
geologist. Any core loss is measured, the percentage
calculated and both are recorded in the Geotech log. In
instances where core breaks off bef ore the bottom of the
hole leading to “apparent poor recovery” followed by a
core run of > 100 % recovery the adjustment is made in
the records. The core recoveries in the six holes drilled
were excellent with all holes individually averaging greater
than 95% and the combined average of all six holes being