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1 | P a g e
2014
SUPERVISOR: Dr Holger Sommer
NAME: Livai Tubitamana
STUDENT ID#: S11076243
ES300 EARTH SCIENCE PROJECT NABILA DRILL CORE
2 | P a g e
Table of Contents
LIST OF FIGURES ............................................................................................................................................ 3
ACKNOWLEDGEMENT ................................................................................................................................... 4
ABSTRACT ...................................................................................................................................................... 5
INTRODUCTION ............................................................................................................................................. 6
AIMS: ............................................................................................................................................................. 7
OBJECTIVES: .................................................................................................................................................. 7
BACKGROUND REVIEW: Drill Core NBDD0001 ............................................................................................. 8
STUDY AREA: DRILL CORE SITES .................................................................................................................. 10
METHODOLOGY .......................................................................................................................................... 12
FIELD: ...................................................................................................................................................... 12
LABORATORY: ......................................................................................................................................... 12
RESULTS ...................................................................................................................................................... 14
Lithology Results: NBDD0001 ................................................................................................................. 14
Alteration Results: NBDD0001 ................................................................................................................ 17
Mineralization: NBDD0001 ..................................................................................................................... 18
THIN SECTIONS: ........................................................................................................................................... 19
DISCUSSION ................................................................................................................................................. 21
Prove: PYRITE not GOLD ......................................................................................................................... 24
CONCLUSION ............................................................................................................................................... 25
Bibliography ................................................................................................................................................ 26
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LIST OF FIGURES
FIGURE TABLE DESCRIPTION PAGES
1 Summary of Drill Core - NBDD0001 8
2 Geology Map of Nai and Lautoka 9
1 Materials 10
3 Logging in Process 12
2 Lithology 15
3 Alteration 16
4 Mineralization 17
4 Thin section 605.50m 18
5 Thin section 705.30m 19
6 Thin section 830.00m 19
7 NBDD0001 Log Model after project 20
8 Gold Mineralized Zone 22
9 Pyrite 23
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ACKNOWLEDGEMENT
I would to acknowledge the following people for helping me throughout the compilation of the
project report.
First of all, I would like to thank The Almighty God for giving the strength and guiding
me throughout the completion of this report.
Secondly, I would like to thank our senior supervisor, Dr Holger Sommer for providing
us the appropriate topic on logging of drill cores.
I would also like to acknowledge the lights of Dr Eleanor John for giving me time to
complete the project report.
And lastly but not the least, I would like to thank all the ES300 students for the
wonderful time spent out in the field during the fieldtrip. The laughter and fun, were
the main driving force for the completion of the logging project.
Without their help, this project would have not been a successful and a completed one.
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ABSTRACT
In the beginning of the second semester, The University of The South Pacific School of
Geography, Earth Science and Environment, The Earth Science Department 300-level students
were given the opportunity to test their knowledge of Earth’s Geology and dirty their hands at
the Nabila Drill Core-shed, in the western side of the main island, which is Viti Levu. The drill
core project phenomenon was brought up by Dr Holger Sommer, a lecturer under the Earth
Science Department. Dr Sommer offered research projects where these students would
describe and log several cores taken from an area in the West of Viti Levu where porphyry
copper deposits have been found. These group of students submitted their own ‘pre-proposals’
to highlight and give a brief review of what to expect while studying the drill cores that were
already being drilled, and also to address scientific observation made on the core samples in
terms of mineralogy, alterations, intrusions and other scientific terms regarding drill core
samples and its components. During the mid-semester break, students were taken to the core-
shed where they would spend five days out there in field retrieving all the information from
drill core samples, or in other terms, to log the drill cores which were already sampled. Add on
to that, students were briefed that the core samples were expensive hence should be handle
with care. From the core that I, as a student, have studied, it was the longest and the deepest
core samples taken from this area in the west. Based on passed research, this core was known
as NBDD001, a name given to this drill core sample. It was studied, observations were noted
and later on these results were used to compile a project report, which is this report.
6 | P a g e
INTRODUCTION
Fiji currently sits at the midpoint between Tonga-Kermadec and Vanuatu convergence zones,
separated from these actual convergence zones by two extensional back-arc basins, which are;
the North Fiji Basin to the west and the Lau Basin to the east, and a series of transform faults
such as the Fiji Fracture Zone, and the Matthew-Hunter Ridge (MRD, 2008). Fiji was not so long
ago an integral part of the Pacific “rim of fire” the complex plate boundary between the Pacific
and the Indo-Australian Plate. This boundary, outlined by a complex array of island arcs,
associated oceanic trenches, volcanic belts and transform faults is well recognized as the locus
of several major world class porphyry copper-gold and epithermal gold systems. Current
knowledge specifies that that the geological history of Fiji is restricted to the Cenozoic era. The
oldest known rocks are pillow lavas, gabbro and platform limestone of Late Holocene age and
the youngest rocks are suberial volcanic ashes erupted on Rotuma and Taveuni in historic
times, which less than 20,000 years B.P (Geography and Geology of Fiji, 2014). In Viti Levu, the
oldest rock of all rock constituents is the Yavuna Group, which is located in the South-west of
the island. The second oldest is the Wainimala Group which divided into two Groups which are
the Lower Wainimala Group which is found on the North and Central part of the island, while,
the Upper Wainimala Group is found in the South-west and in the North-east part. Then the
other groups come in until the youngest of all the rocks is the Ba Volcanic Group, which is
believed to be found throughout the whole island. From these statements, one can clearly
understand that the Nabila Drill Core Samples were sitting on the Wainimala Group, in both the
groups, The Upper and The Lower Wainimala Group. Wainimala Group mainly consisted of
pillow lavas, flows, breccia, volcanoclastic sediments or materials, and minor reef limestones,
together with argillites, sanstones, and reef limestone with marginal facies of diorite and
hornblende andesite and microdiorite (MRD, 2008). As many geologists and expert scientists
would know that the place where a lot of mineralogy were found, the area or place is likely to
have gold deposits too, meaning that gold is likely to be part of it. This is where drill core
logging comes in. Logging of drill cores in Mining Industry can be said to be the study of various
features of the rocks obtained exploration in terms of drilling. Because of these, geologists are
7 | P a g e
able to know the various thickness of each lithology found within the core, the mineralogy of
the rocks at various depth. Not only that, but geologists also understand and able to determine
the potential geologic history, the structures and alteration zones through a tiny piece of
cylindrical rock drilled and removed from potential mineral deposits. The Nabila core-shed is
home to a collection of samples taken from nearby the area within the Nabila and Yako
territories. These samples were already logged by the GeoPacific Resource. To test the
knowledge and understanding from lectures and tutorial classes, a group of students from the
ES300 unit, from The University of The South Pacific, were given a chance to prove themselves
that they are ready for mining and geological activities, using their knowledge from lessons
taken during classes. Each student has to log a particular core as part of their project and
presentation at the end of the field work. Given below are the aims and objectives of my
project.
AIMS:
i. To log the drill core named NBDD0001 which is being kept in the Nabila Core-shed.
ii. To identify the main rock units in terms of lithology which were present in the
NBDD0001 drill core sample.
iii. To identify the mineralization which were present in the NBDD0001 core sample.
iv. To identify where the drill hole sits in porphyry ore deposit model.
v. To make thin sections out of the sample collected.
vi. To construct the NBDD0001 Drill Core Model using Adobe Illustrator.
OBJECTIVES:
i. To be able to log the NDBB0001 drill core sample using suitable methods of logging.
ii. To be able to identify and describe the main rock units in terms of lithology found in the
NBDD001 drill core sample.
iii. To be able to identify the mineralization present in the NBDD0001 core sample.
iv. To be able to make thin sections from the sample collected and observe under
microscope.
v. To be able to construct the NBDD0001 Drill Core Model using Adobe Illustrator.
vi. To be able to understand the concept of drill core logging and its significance in the
Mining Industry.
vii. To be able to present my project findings to my fellow colleagues, supervisors and
invited guests at the end of this project.
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BACKGROUND REVIEW: Drill Core NBDD0001
The Nabila Drill Cores are sitting on the Wainimala Group, the second oldest group of rocks
found in the Fiji Islands, especially on the main land, which is Viti Levu. From previous
statement, Wainimala has two rock groups, the Upper Wainimala Group and the Lower
Wainimala Group. Based on previous research, one could tell that the NBDD0001 was a mixture
of rock found in both the Wainimala Groups. The NBDD0001 sample has a depth of
846.30metres and was the deepest drill core out of all the cores drilled within the Nabila and
Yako Soil and also said to be the last core sample taken from the site. According to ASX
Quarterly report, it has highlighted that the Nabila Drilling Project has reached a final depth of
846metres. Due to severe weather condition such as severe flooding of the area and
mechanical breakdowns, exploration together with drilling and mobilization of drill rigs were
delayed (GeoPacific, ASX Quarterly Report, 2012). The GEOPACIFIC RESOURCES NL designed
NBDD0001 drill hole to test a conductive anomaly centred at 850mRL within the 3D processed
ZTEM data. However, after testing, it was finalized that the ZTEM anomaly was suggestive of a
porphyry-style deposit. After logging done by the GEOPACIFIC, they have noted some of the
drill core verdicts. Listed below were the findings or so called results of the logging;
An upper zone of altered dioritic intrusive with a faulted contact above a sequence of
volcanic rocks, including tuffs, agglomerates, and andesite flows, intruded by a series of
porphyritic to medium grained diorites and andesites.
Alteration and sulphide mineralisation increases from roughly 465m, about the depth of
the change in conductivity reflected in the 3D inverted ZTEM data.
• Several fault breccia zones with >10% sulphide mineralisation are noted from 665 –
832m, typically coincident with strong silica alteration.
• Alteration intensity varies throughout the hole, possibly indicating that the drill hole
has drilled down the edge of a system.
Adding on to that, the report provided by the GEOPACIFIC RESOURCES also stated that there
were no sign of porphyry Cu-Au mineralization observed within the core, however, they have
9 | P a g e
pointed out that there was a zone of strongly silica-altered and fractured fine grained
porphyritic andesite which contains weak sphalerite, galena, and pyrite and chalcopyrite
mineralization. Given below is a summary drill core log for the NBDD0001 hole, which was done
by the GEOPACIFIC RESOURCES NL (GeoPacific, March 2012 Quarterly Report, 2012).
Figure 1: Showing the summary of the NBDD0001 drill hole log.
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STUDY AREA: DRILL CORE SITES
The Nabila Drill Cores are sitting on the Wainimala Group, the second oldest rock found in Fiji.
Composed of mainly tholeiitic materials, these rocks formed about 24 million years ago under the
Neogene Period which happened to be the period whereby the Planet Earth undergoes major changes.
Given below is a map which shows the location of the Nabila Drill Sites (Rhombus shape in white).
Figure 2: Geology Map of Nadi and Lautoka (western division). It shows the location of the Nabila Drill
Cores. Drill Cores are within the Wainimala Group.
11 | P a g e
MATERIALS
Tabulated below are the materials used during the core logging at the Nabila Core-Shed during
the one week fieldwork within the area. Since the drill core samples were already being taken
out from the ground, therefore no need for the machinery equipment to be included in the
materials.
MATERIALS DESCRIPTION
Compass
To take the orientation of the drill core site.
Measuring Tape To take measurements within the core
samples such as; faults, dykes, intrusion etc.
Logging Code For observation and note taking using
abbreviations of different materials.
HCL To test for any carbonate or sulphide material
Water For clear view of the sample by applying water
onto it.it gives a clear view for studying.
Geological Field Book For recording of data and observation note
taking. It provides useful materials like symbols
and all sorts of measurements at the back of
the book.
The Drill Core Sample The main purpose of logging. The NDBB0001
has a total of 222 trays to be studied.
Table 1: Materials used for logging drill core.
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METHODOLOGY
FIELD:
Listed on the next page were the steps taken during the logging of the drill cores and these
steps were thoroughly followed throughout the logging activity;
1. The drill hole location of NBDD0001 was noted together with the orientation of the drill
core.
2. Depth of the NBDD0001 drill hole was noted.
3. Before logging, the core samples were cleaned with water so that the core contents
were visible enough for studying.
4. Major structures found on the NBDD0001 core were marked. These structures include
faults, dykes and sills and other structures.
5. The lithology of the core was noted and observations were recorded down in the field
book.
6. The alterations were then studied and observations were again noted down in the field
book.
7. The mineralization were studied together with the alterations and results were noted.
8. Photos were taken after logging the NBDD0001 core sample.
9. All observations and data were recorded down in the field book.
LABORATORY:
After the field activities, which were logging and observation, samples were taken into the
laboratory for thin sections to be made. The Department of Earth Science Petrology Laboratory
was used for making thin sections since it has all the equipment and heavy machines which
would help in trying to slice up the rock core samples in order to be observed under the
microscope. Steps of making thin sections are as follows (Kumar, 2014);
1. Samples were taken in and were slice up to fit a microscopic slide.
2. The samples were cut into thin pieces so that the samples got attached to slide.
13 | P a g e
3. Then the samples were grind using the grinding machine so that the surface of the
samples were smooth enough and were able to be mingle well with the slide.
4. Then the samples were attached to the slides using EPOXY. EPOXY A was mixed with
EPOXY B and was spread on one side of the sample (smooth side, the grinded one).
5. Then the samples were carefully place onto the slide making sure there were air
bubbles trapped between the slide and the samples.
6. Then were placed onto the hot plate which was covered with Aluminium foil and were
dried until there were no water particles present inside the slide. Approximately one
hour of heating.
7. After that, the slides were taken out and placed on the Saw-arm pad, where samples
were then once again cut and trimmed to an acceptable thickness.
8. Then the samples were once again grind until the light could pass through the samples
and slides.
9. Once done, final observation were made using the microscope. Light was able to pass
through, rock contents were visible under the microscope.
10. Thins sections were made, photos were taken using the camera that was attached to
the microscope.
Figure 3: shows the logging of NBDD0001 drill core.
14 | P a g e
RESULTS
Below were the results obtained when logging the NBDD0001 Drill Core Sample at the Nabila
Core-Shed in the western division. The NBDD0001 was sampled or studied at 60metres interval
since the time required to log was very short and the core was long. The results are divided
into three sections; the Lithology, the Alteration and the Mineralization (Tubuitamana, 2014).
Lithology Results: NBDD0001
ZONE (m) Lithology Rock Name Comments
0 - 60 0-4m: missing tray 4-20m: mostly calcite vein, fractured controlled 20-40m: calcite vein, breccia, mafic volcaniclastic breccia, epidote vein 40-20m: fractured/joint controlled, bedded/graded
Altered Diorite
-calcite veins are common -texture ranging from aphantic, porphyritic, graded bed -common minerals are quartz, calcite, epidote
60 - 120 60-80m:coarse grained materials, fault margin, very weak zone 80-100m: very weak zone, clay intrusion 100-120m: weak zone of breccia
Diorite
-broken samples indicating that the zone is very weak -very weak clast support -zone is fragmented/fractured
120 - 180 120-140m: weak zone, calcite vein, stringers 140-160m: dyke at 150-158m, calcite vein 160-180: weak zone, breccia
Diorite
-calcite vein very common -very weak zone -greyish brown layer spotted>dyke
180 - 240 180-200m:clay intrusion, broken zone 200-220m:epidote vein 200-240m:stockwork vein, calcite vein, breccia
Basaltic
Andesite
-rocks color started to change from light to a bit dark (diorite to andesite) -epidote stockwork vein -weak structure hence broken zone
240 - 300 -stockwork veins are -less are of broken zone, hard core
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common -stringers common too -broken zone at 290-300m, fault spotted
Minor Andesite
-calcite veins are very common -mainly andesite with volcaniclastic characteristic
300 - 360 300-320m:calcite vein, dark intrusion (gabbro intrusion) 320-340m: stringers common 340-360m: weak zone, weak breccia zone
Minor Andesite
-weak zone very common hence the broken materials -faulted breccia up to 30m long
360 - 420 360-380m:calcite vein, broken purplish brown zone, chlorite vein 390-400m:weak zone
Minor
Andesite
-color tend to be the same throughout -purplish zone indicates chlorite alteration
420 - 480 420-440m:purplish brown zone 440-460m:epidote vein common 460-480m:broken zone>breccia, clay intrusion
Andesite
-epidote veins appear again -broken intrusion of clay from 470-480m.
480 - 540 480-520m:stockwork veins of calcite,light blue rock color 520-540m: broken zone
Porphyritic Andesite
-stockwork veins tend to gather at a depth of 495.05m to 523.07m -calcite vein spotted
540 - 600 540-560:breccia, weak zone 560-580m:glassy materials found 580-600m:gypsum intrusion
Volcaniclastic Andesite
-evidence of fault noted -very light materials -breccia indicated by broken zone
600 - 660 600-630m: pyrite zone 630-640m:breccia broken zone 640-660m: breccia broken>faulted
Breccia
-pyrite is common from 606.50m to 628.90m -breccia zone with broken zone
660 - 720 660-680m: chlorite vein 680-700m:breccia indicated by the weak zone 700-720m:fractured/Joint controlled vein
Breccia
-stockwork vein from 660-680m>chlorite veins -weak zone indicating breccia
16 | P a g e
720 - 780 720-740:broken zone, porphyritic andesite 740-760m:chlorite, hornblende zone 760-780m:faulted breccia
Andesite
-mainly andesite material -hornblende diorite intrusion -faulted breccia found
780 - 840 780-800m:faulted breccia 800-810m:calcite vein 810-840m:faulted breccia
Subvolcanic Andesite
Faulted Breccia
-faulted breccia is dominant throughout
840 - 846.30 Mainly volcaniclastic Material
Andesite END OF HOLE!!
Table 2: Shows the results obtained from the field (observation). Results were taken in every 60m intervals.
17 | P a g e
Alteration Results: NBDD0001
ZONE (m) ALTERATION
0 - 60 Sil, Chl, Mag
60 - 120 Chl, Sil, Mag, Epi
120 - 180 Hem, Chl, Cly, Sil
180 - 240 Chl, Sil, Crb
240 - 300 Crb, Chl, Cly
300 - 360 Chl, Cly, Crb
360 - 420 Sil, Chl, Cal
420 - 480 Chl, Sil, Cal
480 - 540 Sil, Chl
540 - 600 Sil, Cly, Cal
600 - 660 Chl, Sil, Hem
660 - 720 Sil, Cly, Chl, Hem
720 - 780 Epi, Sil, Chl
780 - 840 Sil, Cly, Ser, Hem
840 - 846.30 Hem, Cal, Chl
Table 3: Shows the Alteration of the NBDD0001 Drill Core.
18 | P a g e
Mineralization: NBDD0001
ZONE (m) MINERALIZATION STYLE
0 - 60 PYR, CPY VN,DS
60 - 120 PRY FR
120 - 180 PYR, CPY DS, VN
180 - 240 PRY DS, VN
240 - 300 PRY VN, DS
300 - 360 PRY VN
360 - 420 PRY DS
420 - 480 PRY, SPH, GAL VN
480 - 540 CPY, PYR, GAL VN
540 - 600 CPY, PRY VN
600 - 660 PRY VN
660 - 720 PRY, CPY, GAL VN
720 - 780 PRY VN
780 - 840 Undefined Undefined
840 - 846.30 Undefined Undefined
Table 4: shows the mineralization of the NBDD0001 Drill Core.
19 | P a g e
THIN SECTIONS: Thin section analysis is termed to be the microscopic examination of the composition and structure of
sediments. To look at a rock sample in a more detailed environment, thin section is a good choice for it
since it gives a clear view of what a sediment or mineral looks like in a more detailed perspective
(Hirsch, 2012). Samples were randomly picked for thin section. Below is what the samples look
like under the microscope.
From a depth of 605.50metres.
Mag = 40x
Mag = 10x
Figure 4: Thin sections from 605.50m depth.
Chalcopyrite is clearly seen on the
above figure.
Pyrite deposits which also the main
mineralization of the drill core. The whole
view is main pyrite
20 | P a g e
From a depth of 705.30metres.
Mag = 20x
Mag = 10x
Figure 5: thin sections from 705.30m depth.
From a depth of 836.00metres.
Mag = 10x
Mag = 20x
Figure 6: thin sections from 836.00m depth.
The entire field of view - Pryite is the
dominant mineralization
Calcite is visual at this point.
From this depth, pyrite and chalcopyrite
were the dominant mineralization.
21 | P a g e
DISCUSSION
THE NBDD0001 DRILL CORE MODEL
Figure 7: The graph above shows the summary of the NBDD0001 Drill Core constructed using the Adobe Illustrator.
22 | P a g e
Based on the results obtained from the field and also the results from thin sections, The
NBDD0001 Drill Core Model (Figure 3) was constructed using a computer software called The
Adobe Illustrator. From the Model, it can be said that the upper zone of the core was
characterized mainly of diorite which was mainly altered with intrusive volcanic rocks. This
altered diorite can be said to be mainly influenced by the low SiO2 ratio. Together with that, this
upper zone has very strong Chlorite and Magnetite alteration. When moving down, it can be
said that Volcanic Breccia was common throughout the core, from the upper zone and deep
down the core. This brecciated zone were said to be caused by the weak structure of the rock
itself due to tectonic fracture or layers or lenses of weak rocks. Based on the results, due to
chlorite being the dominant alteration within the brecciated zone, it was labelled as the main
cause of the formation of weak zones. Minor Andesites also stamped their marks on the drill
core. Came to light at the depth of 174metres, this minor andesite materials composed mainly
of Chlorite and Clay alteration. From the drill core model, Alteration intensity is very dynamic
throughout the drill core. Adding onto that, it has also been noted that the common
mineralization throughout the whole process of drill core logging were pyrite and chalcopyrite.
These two are classified as Sulphides and both of these minerals have a common name, termed
as “Fool’s Gold”. As the depth increases, volcaniclastic materials began to appear. These rocks
include all the fragmental volcanic rocks that result from any mechanism of fragmentation.
Judging from observation and results and comparing it with the previous work, according to the
GeoPacific ASX Montly Report, they have mentioned that there were no porphyry Copper or
gold mineralization encountered. However, pyrite and chalcopyrite both fall under Copper-Ore
Deposit, which means the GeoPacific will have to reconsider their previous report on Nabila
Project.
Looking at the thin sections, the images were not very clearly since the camera which was
attached to the microscope did not have a very good lens. The only material which can be
spotted was the pyrite. The thin sections were supposed to give a brighter detailed explanation,
but since the lens was very poor, results were hindered. However, when using a much bigger
magnification, minerals were clearly seen. Epidote and calcite were clearly seen, together with
the groundmass.
23 | P a g e
Looking at the Mineralization Table (Table 4), pyrite was the most abundant and dominant
mineralization. Based on the diagram below, it was supposed to be Gold that should be
dominant out of all.
Figure 8: Map showing the Gold Mineralized Zone in Fiji
Based to the map above, Nabila was supposed to be a Gold Mineralized Zone. It was, and it will
become a Gold Mineralized Zone again, but not it is, according the people of Nabila and the
villagers of Yako, in the western of Viti Levu. Myths and legends were believed to be real since
they were being passed down from generations to generations. For the people of Nabila, Gold
have missing from the area since long time ago and still missing now. Putting together and
compiling their story and the findings in terms of logging and observation, myths and legends
were truly accurate in terms of missing trace of gold. From the findings, there were not even a
trace of gold or even a gold ore deposit to be found. Mainly Copper-ore porphyry which was
pyrite and a little bit of chalcopyrite mineralization. And how can we know that it was pyrite
and not Gold that we were encountering in the field?
24 | P a g e
Prove: PYRITE not GOLD
Pyrite is commonly known as “Fools Gold” because of its similarity in colour, shape and habit to
Gold. Pyrite occurs in all different shapes and forms. The smaller crystal aggregates may give
off a beautiful glistening effect in light, and the larger crystals may be perfectly formed,
including fascinating perfect cube and penetration twins and other bizarre crystal forms. The
perfect cubes of Pyrite embedded in a matrix from the famous Spanish mines are especially
treasured among collectors. Many of these specimens have fallen out of the matrix and have
been repaired by having them glued back into the matrix (UoM, 2008). Given below is a photo
taken from the field which shows the pyrite present.
Figure 9: the two photos above show the pyrite mineralization. It is definitely look like gold, but not Gold.
25 | P a g e
CONCLUSION
After compiling this project report, I have understood the main ideas behind the core logging
processes, in both environments; in the field and also in the laboratory. During the field work,
the NBDD0001 was able to be logged using suitable methods of logging. Not only that, but the
lithology, mineralization and alteration of the drill core were also identified and recorded.
Together with that, the NBDD0001 Drill Core Model was constructed using the Adobe Illustrator
and thin sections were made from the samples of the core obtained from the field during the
field work. Most importantly, the concept of drill core logging and its significance were clearly
understood. Based on the results and observation, it can be concluded that the NBDD0001 was
pyrite dominance in terms of mineralization and Chlorite lover in the sense of Alteration. It can
also be said that the Chlorite materials were the reason for the NBDD0001 to have a lot of weak
zones indicated by the broken zones within the drill core. Overall, NBDD0001 has not
intersected any significant porphyry Cu-Au mineralization, meaning that the area either has no
Cu-Au deposits or bury deep below, deeper than the drill core itself, however, there were
Copper-ore porphyry present, which were mainly pyrite and chalcopyrite. For further drillings, I
recommend both sides should be balanced, meaning that the landowners and the drilling
company should be well connected. The drilling company should also play fair with the
landowners since “the land” is traditionally owned and such biased activity may result in either
withdrawing the licence of drilling or breaking the bond for economic minerals to be dug up.
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Geography and Geology of Fiji. (2014). Retrieved from GoVisitFiji: http://www.govisitfiji.com/fiji/
GeoPacific. (2012). ASX Quarterly Report. Suva: GeoPacific Resource.
GeoPacific. (2012, March). March 2012 Quarterly Report. ASX Quarterly Report. Suva, Fiji: GeoPacific
Resource NL.
Hirsch, D. (2012, December 10). How To Make a Thin Section. WWU Geology.
Kumar, S. (2014, September). How To Prepare Thin Section. Suva, Laucala, Fiji: Department of Earth
Science.
MRD. (2008). Geology and Mineralization. Exploration Opportunities in Fiji. Suva, Nabua, Fiji: The
Mineral Resource Department of Fiji .
Tubuitamana, L. (2014, September). Nabila Drill Core Results. The Gelogical Field Book. Suva, Laucala,
Fiji.
UoM. (2008). Mineral Pyrite. University of Minnesota's Mineral Pages. Minnesota, United States of
America: University of Minnesota.