Results of Geochemical Mapping In Kainantu, Eastern ... · Mineral Resources Authority China...
Transcript of Results of Geochemical Mapping In Kainantu, Eastern ... · Mineral Resources Authority China...
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Results of Geochemical Mapping In
Kainantu, Eastern Highlands Province,
Papua New Guinea
Philip Samar
Mineral Resources Authority
Papua New Guinea
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Mineral Resources Authority China Geological Survey
Outline
Introduction
Description of work area
Field work
Sample analysis and data processing
Results
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Mineral Resources Authority China Geological Survey
Introduction PNG is an Island Nation in the
Pacific, north of Australia and east
of Indonesia.
Area (Land) : 462, 000 km2
Population: ~8million
Language: English, Pidgin, Motu
GDP(per capita): $2400 US
Economy: Export Economy
(mineral exports =~ 65%)
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Mineral Resources Authority China Geological Survey
Project Background
MOU of Collaborative work in
Geosciences between Ministry of
Lands & Resources of PRC and
Department of Mining, PNG, signed
in 2012, Tianjin,China
Collaborative work agreement
between CGS and MRA signed in
2013, Tianjin,China
Collaborative work started in PNG,
2014 MOU signing ceremony in Tianjin
China Mining, 2013
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Mineral Resources Authority China Geological Survey
Description of work area
The project area is located
east of Eastern Highlands
Province(EHP) (indicated
by red box)
Covers six districts in EHP,
and part of Morobe
Province
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Mineral Resources Authority China Geological Survey
Topography
The project area shows
3 main Landscapes:
Highland mountains
Hills and Dry
Grassland
Lowland plains and
Alluvial Fans
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Mineral Resources Authority China Geological Survey
Topography
Highlands Mountains – mostly dense uninhabited rainforest
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Mineral Resources Authority China Geological Survey
Topography
Hills and Dry grassland– mostly short ‘Kunai’ grass
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Mineral Resources Authority China Geological Survey
Topography
Lowland Plains & Alluvial Fans– Ramu valley
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Mineral Resources Authority China Geological Survey
Geology Quaternary
Holocene
Alluvium swamp and beach
deposits
Lacustrine deposits
Pleistocene To Holocene Piedmont slope deposits
Pleistocene Kainantu Beds
Tertiary
Upper Miocene Elendora Porphyry
Middle Miocene
Bismarck Intrusive Complex
Yaveufa Formation
Aifunka Yolcanics
Akuna Intrusive Complex
Lower Miocene To Middle
Miocene Movi Beds
Middle Oligocene To Upper
Oligocene Omaura Greywacke
Oligocene Nasananka Conglomerate
Middle Eocene To Lower
Oligocene Chimbu Limestone
Mesozoic
Upper-Cretaceous Mount Victor Granodiorite
Jurassic To Cretaceous Goroka Formation
Lower Jurassic Karmantina Gneissic Granite
Triassic Bena Bena Formation
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Mineral Resources Authority China Geological Survey
Mineralization
Gold: mainly occurred in the eastern part of the mapsheet
Silver: minor silver associated with the gold mineralization in
Kainantu mine
Copper: occurred in Bilimoia, Yonki Creek Prospect and
Aimontina
Lead-Zinc: minor lead-zinc mineralization at Efontera
Prospect
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Mineral Resources Authority China Geological Survey
Pre-field Preparation
Training in 2014
Nanjing Center, CGS conduct the indoor and field training for
regional geochemical training in Port Moresby, PNG.
Indoor training Field training
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Mineral Resources Authority China Geological Survey
865 samples were
designed for regional
geochemical mapping
at scale of 1﹕100 000
Sample design
Geochemical sample design distribution map
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Mineral Resources Authority China Geological Survey
Community Awareness
Permission to work from local community, is very important.
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Mineral Resources Authority China Geological Survey
Sampling
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Mineral Resources Authority China Geological Survey
Field Work Accomplished
Regional geochemical survey
in Kainantu mapsheet
conducted in two stages:
1. northern part of mapsheet:
302 samples collected
2. southern part of mapsheet:
474 samples collected
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Mineral Resources Authority China Geological Survey
Laboratory Analysis
39 elements
analyzed in Nanjing
Geological Testing
Center, Ministry of
Land & Resources
of China.
Analysis method Elements / compounds
XRF
SiO2、Al2O3、Fe2O3、K2O、Na2O、CaO、MgO、Ba、Cr、Mn、P、Ti、 La、Y、Zr
ICP-MS
Cu、Pb、Zn、Co、Ni、Cd、V、Li、Be、U、Th、Nb、
W、Mo、Sr、Sc
GFAAS Au
AFS As、Sb、Bi、Hg
ES Ag、B、Sn
ISE F
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Mineral Resources Authority China Geological Survey
Data Processing
The analysis data
are processed and
geochemical map
generated by
GeoExpl
(International).
GeoExpl, developed by Development
Research center, CGS
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Mineral Resources Authority China Geological Survey
Results
Part of the analysis result
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Mineral Resources Authority China Geological Survey
Results
Information on Mineral potential:
Au (gold)、Cu (copper)、Pb (lead)、Zn
(zinc)、Ag (silver)、Co、Ni、V、Li、U、
Nb、W、Mo、Sn、Sb、Bi
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Mineral Resources Authority China Geological Survey
Au (gold)
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Mineral Resources Authority China Geological Survey
Cu (copper)
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Mineral Resources Authority China Geological Survey
Pb (lead)
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Mineral Resources Authority China Geological Survey
Zn (zinc)
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Mineral Resources Authority China Geological Survey
Ag (silver)
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Mineral Resources Authority China Geological Survey
Information on Geology:
SiO2 (silicon dioxide) 、Fe2O3 (iron oxide)、
K2O(potassium oxide)、Na2O (sodium
oxide)、MgO (magnesium oxide)、CaO、
Al2O3、MnO、P2O5、TiO2、 La、Y
Results
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Mineral Resources Authority China Geological Survey
SiO2 (Silicon dioxide)
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Mineral Resources Authority China Geological Survey
Fe2O3 (iron oxide)
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Mineral Resources Authority China Geological Survey
K2O(potassium oxide)
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Mineral Resources Authority China Geological Survey
Na2O (sodium oxide)
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Mineral Resources Authority China Geological Survey
MgO (magnesium oxide)
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Mineral Resources Authority China Geological Survey
Information on Environment :
As (arsenic)、Hg (mercury)、Cd
(cadmium)、F、Cr、Pb、U、Th
Results
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Mineral Resources Authority China Geological Survey
As (arsenic)
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Mineral Resources Authority China Geological Survey
Hg (mercury)
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Mineral Resources Authority China Geological Survey
Cd (cadmium)