ASX/TSX-V: JRV
OTC:JRVMF FRA:IHS
HIGHLIGHTS
- Initial drilling programme has concluded at Bujagali,
which targeted the Bombo and Waragi anomalies detected
during earlier geochemical sampling programmes.
- In total in the Bujagali region, five diamond holes were
drilled at Bombo (totaling 1,325 metres) and an initial 12 diamond
holes (or 2,225 metres) at Waragi.
- Highlights include:
1.4m @ 0.19% Co from 55.0m – 19DDHW002A
5.3m @ 0.15% from 76.6, including 4.3m @ 0.17% Co and 2.0m @ 0.24% Co –
19DDHW003
1.3m @ 0.19% Co
from 15.5m– 19DDHW005
2.0m
@ 0.16% Co from 11.4m –
19DDHW006
1.0m @ 0.20% Co
from 6.5m –
19DDH009
8.1m @ 0.30% Cu
from 3.9m, including 1.0m @ 0.61% Cu –
19DDHB001
10.7m @ 0.14% Cu
from 57.3m –
19DDHB001
13.4m @ 0.10% Cu
from 84.0m – 19DDHB001
- As previously announced, further drilling at Waragi is now
planned during Q4 to systematically test the large Cu–Co
geochemical anomaly which extends for over 20km and follow-up on
the shallow high-grade intercepts from the Phase 1 drilling.
- Q4 drilling at the Kilembe Area Properties is planned to
test the high grade Cu-Au anomalies from rock chip samples (see ASX
release dated 9 September 2019).
Mobilisaiton to the Kilembe area is well underway with drilling
ancitipated to commence during October.
MELBOURNE, Oct. 15, 2019 /CNW/ - Jervois Mining Limited (the
"Company" or "Jervois") (ASX:JRV) (TSX-V: JRV) (OTC:JRVMF)
(FRA:IHS) is pleased to announce exploration results from an
initial drill programme at its Bujagali properties in central
Uganda.
This initial drill programme at Bujagali targeted the Bombo and
Waragi anomalies detected through earlier IP programmes, with 3,460
metres of diamond drilling completed: five (5) holes were drilled
at Bombo and twelve (12) holes were drilled at Waragi. The drill
hole locations are shown on Figure 1 and Table 1 summarizes the
important results.
Table 1: Bujagali Drilling Highlights, Co > 0.15%, Cu >
0.1%*
Hole
ID
|
Location
UTM WGS
1984
|
Dip
|
Azimuth
|
Depth
From
|
Depth
To
|
Intercept
|
Cu %
/
Co
%
|
19DDHW001
|
360655_X/95319_Y
|
-45
|
360
|
303.5m
|
306.0m
|
2.5m
|
0.17% Cu
|
19DDHW002
|
360655_X/95578_Y
|
-45
|
360
|
No Significant
Results
|
19DDHW002A
|
360655_X/95578_Y
|
-55
|
360
|
55.0m
|
56.4m
|
1.4m
|
0.19% Co
|
19DDHW002B
|
360655_X/95578_Y
|
-55
|
360
|
27.0m
|
28.0m
|
1.0m
|
0.15% Co
|
|
|
|
|
225.0m
|
226.0m
|
1.0m
|
0.25% Cu
|
19DDHW003
|
359689_X/95547_Y
|
-65
|
360
|
76.6m
|
81.9m
|
5.3m
|
0.15% Co
|
|
|
|
|
including
|
|
4.3m
|
0.17% Co
|
|
|
|
|
including
|
|
2.0m
|
0.24% Co
|
19DDHW004
|
359324_X/95511_Y
|
-65
|
360
|
99.4m
|
101.0m
|
1.6m
|
0.13% Cu
|
19DDHW005
|
365074_X/95964_Y
|
-55
|
190
|
15.5m
|
16.8m
|
1.3m
|
0.19% Co
|
19DDHW006
|
365074_X/95964_Y
|
-55
|
260
|
11.4m
|
13.4m
|
2.0m
|
0.16% Co
|
19DDHW007
|
370768_X/93203_Y
|
-55
|
350
|
No Significant
Results
|
19DDHW008
|
372766_X/93286_Y
|
-55
|
350
|
163.5m
|
164.5m
|
1.0m
|
0.47% Cu
|
19DDHW009
|
372035_X/93235_Y
|
-60
|
360
|
No Significant
Results
|
19DDHW009A
|
372035_X/93235_Y
|
-55
|
360
|
6.5m
|
7.5m
|
1.0m
|
0.20% Co
|
Hole
ID
|
Location
UTM WGS
1984
|
Dip
|
Azimuth
|
Depth
From
|
Depth
To
|
Intercept
|
Cu %
/
Co
%
|
19DDHB001
|
398475/71700_Y
|
-65
|
360
|
3.9m
|
12.0m
|
8.1m
|
0.32% Cu
|
|
|
|
|
including
|
|
1.0m
|
0.61% Cu
|
|
|
|
|
57.3m
|
68.0m
|
10.7m
|
0.14% Cu
|
|
|
|
|
84.0m
|
97.4m
|
13.4m
|
0.10% Cu
|
19DDHB002
|
398900_X/71300_Y
|
-65
|
360
|
72.0m
|
73.0m
|
1.0m
|
0.20% Cu
|
|
|
|
|
267.0m
|
267.5m
|
0.5m
|
0.33% Cu
|
|
|
|
|
275.1m
|
278.0m
|
2.9m
|
0.14% Cu
|
19DDHB003
|
402700/72600_Y
|
-90
|
360
|
No Significant
Results
|
19DDHB004
|
402850_X/72850_Y
|
-90
|
360
|
No Significant
Results
|
19DDHB005
|
403250_X/73150_Y
|
-90
|
360
|
No Significant
Results
|
As this is an initial drilling programme true widths are
currently unknown.
During Q4, further exploration work will occur at both the
Kilembe and Bujagali Areas, as previously outlined in the press
release on September 9th,
2019. At Kilembe, Jervois has approved a further 2,500 metres of
drilling, together with rock chip and soil sampling, ground
geophysics (magnetics) and prospecting. At Bujagali, another 2,500
metres of drilling has also been approved targeting the trends of
shallow mineralization intersected during this Phase 1 programme.
Ground electromagnetics at Bombo is also planned.
Quality Assurance
All rock and soil samples are sent
to ALS Chemex South Africa (Pty) Ltd, an independent and fully
accredited laboratory in South
Africa for analysis for gold multi-element Induction Coupled
Plasma Spectroscopy. Jervois also has a regimented Quality
Assurance, Quality Control program where at least 10% duplicates
and blanks are inserted into each sample shipment.
Competent Person's Statement
The information
in this release that relates to Mineral Exploration is based on
information compiled by David Selfe
who is full time employee of the company and a Fellow of the
Australasian Institute of Mining and Metallurgy and Dean Besserer, P.Geol. who is the GM Exploration
for the company and a member of The Association of Professional
Engineers and Geoscientists of Alberta. Both David
Selfe and Dean Besserer have
sufficient experience which is relevant to the style of
mineralization and type of deposit under consideration and to the
activity which they are undertaking 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'. David Selfe and
Dean Besserer consent to the
inclusion in the release of the matters based on their information
in the form and context in which it appears.
Disclosure required for TSX-V Regulations
Qualified Person's Statement
The technical
content of this news release has been reviewed and approved by
Dean Besserer, P.Geol., the GM
Exploration for the Company and a Qualified Person as defined by
National Instrument 43-101
Neither TSX Venture Exchange nor its Regulation Services
Provider (as that term is defined in policies of the TSX Venture
Exchange) accepts responsibility for the adequacy or accuracy of
this release.
Forward-Looking Statements
This news release
may contain certain "Forward-Looking Statements" within the meaning
of the United States Private Securities Litigation Reform Act of
1995 and applicable Canadian securities laws. When used in this
news release, the words "anticipate", "believe", "estimate",
"expect", "target, "plan", "forecast", "may", "schedule" and other
similar words or expressions identify forward-looking statements or
information. These forward-looking statements or information may
relate to exploration work to be undertaken in Uganda, the reliability of third party
information, and certain other factors or information. Such
statements represent the Company's current views with respect to
future events and are necessarily based upon a number of
assumptions and estimates that, while considered reasonable by the
Company, are inherently subject to significant business, economic,
competitive, political and social risks, contingencies and
uncertainties. Many factors, both known and unknown, could cause
results, performance or achievements to be materially different
from the results, performance or achievements that are or may be
expressed or implied by such forward-looking statements. The
Company does not intend, and does not assume any obligation, to
update these forward-looking statements or information to reflect
changes in assumptions or changes in circumstances or any other
events affections such statements and information other than as
required by applicable laws, rules and regulations.
JORC Code, 2012 Edition – Table 1
Section 1 Sampling Techniques and Data
Criteria
|
JORC Code
explanation
|
Commentary
|
Sampling
techniques
|
- Nature and quality
of sampling (eg 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.
- Include reference
to measures taken to ensure sample representivity and the
appropriate calibration of any measurement tools or systems
used.
- 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 (eg '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 (eg submarine nodules)
may warrant disclosure of detailed information.
|
Sampling to date
includes 2,401 diamond drill samples (from 27 diamond core drill
holes); 21,646 soil samples; 3,173 rock samples, 26 Heavy Mineral
Concentrates; 25 stream silt samples; 1,258 trench samples (rock);
and, 379 trench samples (soil).
All drill core was
generally sampled on 1m intervals, contingent on geology and core
recovery:
Core was collected
directly from the core barrel into core boxes, and Core samples
were split in half, with the top half of the core analysed and
other half retained as reference core in the tray. Core trays were
clearly labelled with the hole number, tray number and metre
intervals marked. Bottom-of-hole orientation line was marked prior
to geological logging and sampling.
Soil samples (B
Horizon) are collected using a pick and spade to dig small pits
which are filled back in after the sample is collected. The samples
are collected in 4x6' kraft bags and closed/sealed with a zip tie.
All sample information is recorded on hand-held devices utilizing
the Fulcrum App. ALS Sample tag books are utilized for sample
identifiers which are scanned and/or entered manually. The sample
identifier is written on the bag and a tag is placed in the bag.
Sample and site photos are recorded at every site. Devices are
downloaded daily are all information is stored to the
cloud.
Rock samples
(typically grab samples) are collected using a rock hammer. The
samples are selective and are not necessarily indicative of
mineralization. The samples are collected in 12x20 plastic ore bags
and closed/sealed with a zip tie. All sample information is
recorded on hand-held devices utilizing the Fulcrum App. ALS Sample
tag books are utilized for sample identifiers which are scanned
and/or entered manually. The sample identifier is written on the
bag and a tag is placed in the bag. Sample and site photos are
recorded at every site. Devices are downloaded daily are all
information is stored to the cloud.
Samples were cut
along the orientation line before being correctly placed back into
the tray. The half-core was sampled, ensuring that the same side is
consistently sampled, and placed into sample bags labelled with the
assigned sample number. Orientation lines are determined using a
Reflex ACTIII orientation tool. Downhole measurements are recorded
using a Reflex EZ-Gyro Kit at multiple intervals down each hole and
always at the end of every hole.
Field sampling
followed Jervois protocols including industry standard quality
control procedures.
All samples were sent
to ALS Chemex South Africa (Pty) Ltd., an independent and fully
accredited laboratory in South Africa ("ALS") for analysis for gold
multi-element Induction Coupled Plasma Spectroscopy ("ICP").
Jervois also has a regimented Quality Assurance, Quality Control
("QA/QC") programme where at least 10% duplicates and blanks are
inserted into each sample shipment.
Sample
representativity is ensured by:
Diamond Core: For all
drilling core was halved for sub‐sampling with a diamond saw.
Sample intervals range from 0.1 to 1 m in length, with majority of
samples assayed over 1 m intervals.
Rock grab samples are
by their nature selective and are not necessarily indicative of the
general geology of the property.
Handheld XRF
instruments were used to spot check rock grab and/or drill core for
mineralization, however those results were not relied on. All
sample results reported on are from ALS Chemex South Africa (Pty)
Ltd. Some Drill holes were lined with PVC piping and in most holes,
downhole Electromagnetics were completed after drilling was
complete.
All of the drilling
was diamond drill core (HQ/NQ). Typically, drill core was sampled
on nominal 1m half core samples.
All sample analyses
were completed at ALS Chemex South Africa (Pty) Ltd. and/or ALS
Chemex Vancouver, Canada. ALS is a global independent laboratory
which is ISO accredited.
Samples are received
at the laboratory: Bar codes are scanned and logged; samples are
weighed and dried; samples are crushed and pulverized (-180 mesh
soils; -75microns rocks) then riffle split; all samples are
analyzed for 35 elements using ICP-AES and gold using 30 gram fire
assay for soils and 50 gram Fire assay for rocks, both with an AA
finish. Any samples with over-limits specific to base metals or
gold are re-analyzed.
|
Drilling
techniques
|
- Drill type (eg core, reverse circulation, open-hole
hammer, rotary air blast, auger, Bangka, sonic, etc) and details
(eg core diameter, triple or standard tube, depth of diamond tails,
face-sampling bit or other type, whether core is oriented and if
so, by what method, etc).
|
HQ casing/coring
within saprolite yet the majority of the core was NQ
Holes were generally
angled from 45 to 90 degrees at varying azimuths.
Reflex Orientation
tool was used for structural orientations, and depths varied from
8.85m to 418.8m.
|
Drill sample
recovery
|
- Method of recording
and assessing core and chip sample recoveries and results
assessed.
- Measures taken to
maximise sample recovery and ensure representative nature of the
samples.
- Whether a
relationship exists between sample recovery and grade and whether
sample bias may have occurred due to preferential loss/gain of
fine/coarse material.
|
All holes are teched
and all intervals are measured for recovery and RQD's are
calculated. Recovery % recorded in the geotechnical records as
equivalent to the length of core recovered, as a percentage of the
drill run.
Excellent recoveries
were obtained from Diamond drilling.
There is no bias
noted between sample recovery and grade. Excellent recoveries were
obtained from Diamond drilling.
|
Logging
|
- Whether core and
chip samples have been geologically and geotechnically logged to a
level of detail to support appropriate Mineral Resource estimation,
mining studies and metallurgical studies.
- Whether logging is
qualitative or quantitative in nature. Core (or costean, channel,
etc) photography.
- The total length
and percentage of the relevant intersections logged.
|
Diamond
drilling:
Drill core is
photographed and logged prior to sampling;
Core has been
geologically and geotechnically logged to a level of detail
appropriate to support mineral resource estimation and mining
studies.
Logging has been
conducted both qualitatively and quantitatively; full description
of lithologies, alteration and comments are noted, as well as
percentage estimates on veining and sulphides.
In total, 5,578.9.37
m of diamond drill core have been completed. All drill holes are
logged in their entirety.
|
Sub-sampling
techniques and sample preparation
|
- If
core, whether cut or sawn and whether quarter, half or all core
taken.
- If non-core,
whether riffled, tube sampled, rotary split, etc and whether
sampled wet or dry.
- For all sample
types, the nature, quality and appropriateness of the sample
preparation technique.
- Quality control
procedures adopted for all sub-sampling stages to maximise
representivity of samples.
- Measures taken to
ensure that the sampling is representative of the in situ material
collected, including for instance results for field
duplicate/second-half sampling.
- Whether sample
sizes are appropriate to the grain size of the material being
sampled.
|
Core was half-cut
lengthwise using a diamond saw along the orientation line. The
half-core was sampled, generally on metre intervals.
Samples are received
at the laboratory: Bar codes are scanned and logged; samples are
weighed and dried; samples are crushed and pulverized (-75microns
rocks) then riffle split; all samples are analyzed for 35 elements
using ICP-AES and gold using 50 gram Fire assay with an AA finish.
Any samples with over-limits specific to base metals or gold are
re-analyzed.
For core sampling the
same side is consistently sampled, half-core with the bottom of
hole line is retained in the tray. The assay sub- sample is placed
into sample bags labelled with the assigned sample
number.
One in 20 samples is
duplicated where the core is quartered and a quarter cut sample is
analysed as a duplicate. The remaining quarter samples is retained
in the tray.
Sample sizes of 2-3
kg are appropriate for the grain size of material. The sample
preparation technique and sample sizes are considered appropriate
to the material being sampled.
|
Quality of assay
data and laboratory tests
|
- The nature, quality
and appropriateness of the assaying and laboratory procedures used
and whether the technique is considered partial or
total.
- For geophysical
tools, spectrometers, handheld XRF instruments, etc, the parameters
used in determining the analysis including instrument make and
model, reading times, calibrations factors applied and their
derivation, etc.
- Nature of quality
control procedures adopted (eg standards, blanks, duplicates,
external laboratory checks) and whether acceptable levels of
accuracy (ie lack of bias) and precision have been
established.
|
The ICP-AES and Fire
Assay (50 gram) are considered total and are high
quality.
Jervois has a
regimented Quality Control protocol which has consisted of
systematic submission of blanks and duplicates in addition to those
conducted at the laboratory.
Precision levels for
all blank and duplicate samples fell within acceptable
ranges.
|
Verification of
sampling and assaying
|
- The verification of
significant intersections by either independent or alternative
company personnel.
- The use of twinned
holes.
- Documentation of
primary data, data entry procedures, data verification, data
storage (physical and electronic) protocols.
- Discuss any
adjustment to assay data.
|
Since no economic
intersections have been reported, independent verification has not
yet been necessary.
No holes have been
twinned.
Data is collected
using a customized version of the Fulcrum app. The data is backed
up systematically on and off site as well as on the cloud. As well,
data is recorded using a master Microsoft Office Excel spreadsheet
and all location and assay data are compiled in a Microsoft Office
Access database.
All data below
detection limit have been entered as zero.
Samples received
damaged at the laboratory, or with insufficient sample weight for
analysis had the interval or location left blank, but in general
were re-sampled and/or re-collected (specific to soils and rock
grab samples).
|
Location of data
points
|
- Accuracy and
quality of surveys used to locate drill holes (collar and down-hole
surveys), trenches, mine workings and other locations used in
Mineral Resource estimation.
- Specification of
the grid system used.
- Quality and
adequacy of topographic control.
|
All collars were
surveyed by trained surveyors using a Leica Differential GPS.
Down-hole surveys were routinely carried out on all holes using a
Reflex EZ-Gyro Kit. Trenches and surface samples were recorded
using handheld GPS.
All datum is
collected and recorded in UTM WGS 1984.
The 3D location of
the individual samples is considered to be adequately established,
consistent with accepted industry standards.
Locations are shown
on maps provided. Cross sections and a complete table of results
are only reported when target mineralization was intercepted with
the consistency of width and grade necessary to support a
potentially economic resource.
|
Data spacing and
distribution
|
- Data spacing for
reporting of Exploration Results.
- Whether the data
spacing and distribution is sufficient to establish the degree of
geological and grade continuity appropriate for the Mineral
Resource and Ore Reserve estimation procedure(s) and
classifications applied.
- Whether sample
compositing has been applied.
|
To date, due to the
exploratory nature of the drilling, the spacing is highly variable.
Similarly, rock grab sample spacing is random. Soil samples are
collected in grids designed at varying spacings from >350m to
25m spaced samples.
To date all exploration is exploratory and data spacing would not
be considered sufficient to establish a Mineral Resource or Ore
Reserve Estimation.
Samples intervals are
reported as weighted average grade.
|
Orientation of
data in relation to geological structure
|
- Whether the
orientation of sampling achieves unbiased sampling of possible
structures and the extent to which this is known, considering the
deposit type.
- If the relationship
between the drilling orientation and the orientation of key
mineralised structures is considered to have introduced a sampling
bias, this should be assessed and reported if material.
|
Drilling sections are
orientated perpendicular to the strike of the host rocks. Drill
holes were inclined between 45° and 90° to optimize intercepts of
mineralisation with respect to thickness and
distribution.
Drilling with angled
and vertical holes in most instances provides a representative
sample across the stratigraphy.
|
Sample
security
|
- The measures taken to ensure sample
security.
|
All individual
samples are bagged and sealed with a zip tie. Then individual
samples are bagged in poly woven sacks and sealed with coded
security seals. The laboratory reports all the security seals
numbers to Jervois and any problems with the samples. To date, no
sample shipments have had reported problems and/or a breach in
security.
|
Audits or
reviews
|
- The results of any audits or reviews of sampling
techniques and data.
|
Jervois protocols
consist of a regimented internal QA/QC which match or exceed global
industry standards. Thus far, due to the exploratory nature of the
programme, no audits or external reviews have been
conducted.
|
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SOURCE Jervois Mining Limited