Khin Zaw

University of Tasmania · School of Earth Sciences (Geology) ARC Centre of Excellence in ore Deposits

Green jasper, an opaque and impure variety of microcrystalline quartz characterized by its deep green hue, has recently been found in northeastern Cambodia. We report on its mineralogical, petrological, and geochemical characteristics and its genesis using petrological microscopy, scanning electron microscopy, X-ray diffraction, X-ray fluorescence...

MYANMAR GEOLOGY AND NEIGHBOURING COUNTRIES GEOLOGY REPORTS COLLECTIONS 20 AUG 2024 GEOLOGICAL RESEARCH REPORT COLLECTION MYANMAR UPDATE 27 th JANUARY 2024 Presentation January 202425 Reads Mingming JiangNoshin SharmiliSaiful IslamKyaing SeinMyo AUNG Myanmar GEOLOGICAL RESEARCH REPORT COLLECTION MYANMAR UPDATE 27 th JANUARY 2024 New Insights Into Ac...

GEOLOGICAL RESEARCH REPORT COLLECTION MYANMAR UPDATE 07 NOVEMBER 2023 Origin and Evolution of Ultramafic Rocks along the Sagaing Fault, Myanmar Article February 2023 Journal of Earth Science Tomoaki MorishitaHnin Min SoeHla Htay[...]Khin Zaw Modelling the seismic potential of the Indo-Burman megathrust Article October 2021 Scientific Reports Inessa...

Selected Malaysian black shale sequences of the Permo-Triassic and Devonian ages that crop out in the Central Belt were investigated to discuss their chemical composition, provenance, tectonic setting, and weathering history. X-ray fluorescence (XRF) analysis shows that the BRSZ Unit 1 black shale has elevated SiO2, TiO2, and K2O contents compared...

Sedimentary and hydrothermal pyrites contained in selected Malaysian black shale and cherts have been analysed using laser ablation inductively coupled plasma (LA ICP-MS) and electron probe microanalysis (EPMA) at the University of Tasmania, Australia. This study shows that gold is concentrated in sedimentary and hydrothermal pyrite in the Middle P...

GEOLOGICAL RESEARCH REPORT COLLECTION MYANMAR UPDATE 03 JUN 2023 Origin and Characteristics of the Shwetagun Deposit, Modi Taung-Nankwe Gold District and the Kunzeik and Zibyaung Deposits, Kyaikhto Gold District in Mergui Belt, Myanmar: Implications for Fluid Source and Orogenic Gold Mineralization Article December 2021 Frontiers in Earth Science M...

The active Sagaing fault in Myanmar defines the boundary between the Indian Plate and the Eurasian Plate and causes seismic damage in the major cities of Myanmar. Small bodies of serpentinite occur along the fault. We for the first time investigated the highly sheared serpentinite bodies in the Sheinmagar area and Yega Inn area along the Sagaing fa...

Several orogenic/sediment-hosted gold deposits are widely distributed in the Central Belt of Peninsular Malaysia. This study combines U-Pb dating with the isotope composition of lead as well as gold content in ore and magmatic rock-hosted pyrite. It aims to investigate the age of gold mineralization and possibly establish a link between gold minera...

The B prospect is located at the southeast of the Chatree gold-silver deposit. The mineralization is hosted in the Late Permian-Early Triassic Chatree volcanic sequence consisting of volcaniclastic and volcanogenic-sedimentary rocks ranging in composition from basaltic andesite to rhyolite. At the study area, the total thickness of volcanic success...

Fossil material in amber from Myanmar can provide important insights into mid-Cretaceous forest ecosystems. However, Myanmar amber has been receiving increased international attention due to reported links between amber mining and the ongoing humanitarian crisis in northern Myanmar, as well as the legal issues associated with its exportation. Here,...

The volcanic-hosted massive sulphide (VHMS) deposits of the Tasik Chini area, Peninsular Malaysia are hosted by Permian felsic volcanic rocks (¬ 290 Ma) of rhyolitic to rhyodacitic composition and comprise two deposits (Bukit Botol and Bukit Ketaya). Although the ores and the felsic volcanic host rocks of these deposits have metamorphosed to greens...

The Singu-Tabeikkyin gold district is located in the Mogok Metamorphic Belt in Myanmar. Gold mineralization in this district occurs in a set of mainly N−S trending quartz veins, which are associated with minor replacement zones and skarns. This study investigates the field geology, ore mineralogy, mineral chemistry, and fluid inclusion characterist...

Eastern Myanmar is located at the junction of the Changning-Menglian and Chiang Rai-Chiang Mai zone and is a crucial region for constraining the evolution of the eastern Paleo-Tethys. This study presents new zircon U-Pb geochronologic, mineral and whole-rock geochemical, and Sr-Nd-Hf-O isotopic data for magmatic rocks from the Sukhothai arc in east...

The Mergui Belt of Myanmar is endowed with several important orogenic gold deposits, which have economic significance and exploration potential. The present research is focused on two gold districts, Modi Taung-Nankwe and Kyaikhto in the Mergui Belt comparing their geological setting, ore and alteration mineralogy, fluid inclusion characteristics,...

The pre- to post-Late Neoproterozoic geological histories in the south to southwestern part of Mamfe Basin (SW Cameroon) were reported following analysis of the zircon crystals from their host rocks. A genetic model was developed for the zircon host rocks’ formation conditions, and the registered post-emplacement events were presented. The obtained...

The Bukit Botol and Bukit Ketaya deposits are two examples of volcanic-hosted massive sulphide (VHMS) deposits that occur in the Tasik Chini area, Central Belt of Peninsular Malaysia. The mineralisation is divided into subzones distinguished by spatial, mineralogical, and textural characteristics. The primary sulphide minerals include pyrite, chalc...

Major trace element analyses, including pyrite chemistry of pyritic mudstones of shallow-marine Singa Formation of Pennsylvanian–Early Permian age have been carried out to assess gold potential, the source of sulfur and organic matter. Regionally, Singa Formation spatially correlates with the Bohorok Formation (Sumatra, Indonesia), the Kaeng Kracha...

Triassic magmatism in Thailand provides the critical geological record for understanding the evolution of the Paleo-Tethys Ocean. This paper presents zircon U-Pb dating, zircon trace element compositions, elemental geochemistry and Sr-Nd-Hf isotopes for the newly identified Late Triassic granite intrusions in the Upper Peninsula of Thailand where v...

The Loei Fold Belt is one of the most significant tectonic and metallogenic belts in the Indochina Block. However, origin and tectonic significance of volcanic rocks in several volcanic belts of this fold belt remain ambiguous. In this paper, we present new petrochemical data, zircon U-Pb ages and Lu-Hf isotopic data for volcanic rocks from the Loe...

The giant Luziyuan Zn-Pb-Fe(-Cu) deposit is located in the southern Baoshan block of SE Tibet. The deposit hosts over 4.2 million tonnes (Mt) of contained Zn + Pb metal and 301 Mt Fe ore reserve. The stratiform-/vein-type orebodies are hosted along the interlayer fractures in the Upper Cambrian Shahechang Formation marble and skarn. Three alteratio...

The major target of this research is the classification of pyrite types using fractal and stepwise factor analyses in the Chah Zard ore deposit, Central Iran. The ore occurs within a breccia/vein type and the major ore mineral hosting gold mineralization is pyrite. In this study, data were selected using optical, scanning electron microscopy (SEM)...

Ruby as a natural gemstone has an early history in which its colorful properties [...]

In order to verify the early Paleozoic accretionary assemblage in the Indochina interior and constrain the Prototethyan tectonic evolution in Southeast Asia, this study presents a set of new U-Pb geochronological, elemental, and Sr-Nd-Pb-Hf-O isotopic data for the fifty-two representative granitoids in South Laos. The granitoids from the Kontum ter...

The volcanic-hosted massive sulphide (VHMS) deposits in the Tasik Chini district, Peninsular Malaysia are hosted in Permian volcano-sedimentary rocks and are composed of Fe-Mn ± Si layers which occur stratigraphically above the ore bodies. The oxide layers are 1 cm to 2 m thick, and occur discontinuously throughout the Bukit Botol deposit, whereas...

Northern Laos is at the junction of the Paleo-Tethys convergence and assemblages of several crustal blocks such as the Sibumasu, South China and the Indochina blocks, and also comprises the Houayxay-Sukhothai, the Simao-Phongsaly, the Louang Phrabang-Loei, the Truong Son and the Song Da terranes. During the amalgamation of the terranes derived from...

The Simao–Indochina Basin is located between the Loei–Luang Prabang–Dien Bien Phu fold belt and the Jinghong–Nan-Uttaradit suture zone, composed of Mesozoic and Cenozoic red beds. It overlies the marine clastic rocks and volcanic sedimentary rocks of a Paleozoic back-arc foreland sequence. The Late Triassic Indosinian orogeny and subsequent superim...

The Lyhamyar deposit is a large Sb deposit in the Southern Shan Plateau, Eastern Myanmar. The deposit is located in the Early Silurian Linwe Formation, occurring as syntectonic quartz-stibnite veins. The ore body forms an irregular staircase shape, probably related to steep faulting. Based on the mineral assemblages and cross-cutting relationships,...

Ore-forming fluids in the auriferous district of the Central gold belt in Peninsular Malaysia were studied for their temperature, salinity, and relationship to the surrounding geology. Microthermometric analysis carried out showed homogenisation temperatures range from 210 to 348 °C (Tersang), between 194 and 348 °C (Selinsing), and from 221 to 346...

The Cu-bearing Sabe Taung-Pein Ye deposit area is located in Kyaukse Township, Mandalay Region. The area is covered by the low-grade metamorphic rocks of the late Proterozoic Chaung Magyi Group, the carbonate rocks of Ordovician Lokepyin and Wunbye Formations of the Pindaya Group, the Silurian Linwe Formation of the Mibayataung Group, and the Permo...

The VHMS deposits of Tasik Chini area are located in the Pahang State of Central Belt, Peninsular Malaysia. The deposits occur in a package of Permian volcanics within mixed volcano-sedimentary sequence, and have been exploited from the Bukit Botol and Bukit Ketaya deposits. They have many similarities with Kuroko-style massive sulfide deposits. Th...

This Special Issue planned for Minerals aims to attract further studies on this multi-origin gem mineral. Investigations at the 'economic border' of ruby and sapphire nomenclature and relevant treatments affecting ruby color will be considered. The keywords are: gem corundum ruby research trace elements spectroscopy O isotopes inclusions; P-T genes...

Greece contains several gem corundum deposits set within diverse geological settings, mostly within the Rhodope (Xanthi and Drama areas) and Attico-Cycladic (Naxos and Ikaria islands) tectono-metamorphic units. In the Xanthi area, the sapphire (pink, blue to purple) deposits are stratiform, occurring within marble layers alternating with amphibolit...

Ruby in diverse geological settings leaves petrogenetic clues, in its zoning, inclusions, trace elements and oxygen isotope values. Rock-hosted and isolated crystals are compared from Myanmar, SE Asia, and New South Wales, East Australia. Myanmar ruby typifies metasomatized and metamorphic settings, while East Australian ruby xenocrysts are derived...

The study area is situated about 32 km northeast of Mandalay. It is bounded between North latitudes 22 ˚ 5'to 22 ˚13' and East Longitudes latitudes 22 ˚ 5' to 22 ˚13' in one topographic map of 93 B/4 and 93 B/8. It is located at the junction of Slate Belt, eastern part of Mogok Metamorphic Belt and Shan Plateau. It is bounded by two dextral strike-...

The Ayer Chawan Facies is one of the volcano-sedimentological facies belonging to the Jurong Formation in Singapore. The geology of the south-western Jurong Island had never been documented before the island was reclaimed in 1998. The present geological, sedimentological and geochronological study of the Ayer Chawan Facies was undertaken as part of...

The Sepon gold-copper district occurs along the Truong Son Foldbelt in a 10 km × 40 km east-trending corridor in southern Laos. This study has investigated the nature of gold in pyrite and ore-forming fluid characteristics using Laser Ablation Inductively Coupled Plasma Mass Spectrometry (LA-ICP-MS) and Proton Induced X-ray Emission (PIXE) techniqu...

Myanmar is a country vastly rich in gold, silver, base metals, tin–tungsten, gems and hydrocarbons and is one of the last exploration frontiers remaining in the world. Tectonically Myanmar lies at the eastern end of the Himalayan Mountain Chain and over the last 50 Ma has been profoundly affected by the collision between India and Eurasia, which is...

The Bukit Botol volcanic-hosted massive sulphide (VHMS) deposit is located in the Central Belt of Peninsular Malaysia. The deposit occurs in a package of Permian-aged coherent felsic volcanic and volcaniclastic rocks which have a geochemical signature indicative of a volcanic arc tectonic setting. Mineralisation shows distinct ore zonation, forming...

Mesozoic strata in the East Malaya Terrane of Peninsular Malaysia record a long but poorly constrained history of basin evolution. In this study, we report LA-ICP-MS U–Pb geochronology analyses of detrital zircons in the continental Mesozoic sequences from the Bertangga and Gerek formations of Peninsular Malaysia, with the aim to constrain the depo...

Whole-rock geochemical and Sr–Nd isotopic data are presented for late Miocene volcanic rocks associated with the Chah Zard epithermal Au-Ag deposit in the Urumieh-Dokhtar Magmatic Arc (UDMA), Iran, to investigate the magma source, petrogenesis and the geodynamic evolution of the study area. The Chah Zard andesitic to rhyolitic volcanic rocks are ch...

The Bawdwin Mine, a Pb-Zn-(Cu-Ag-Ni) deposit sited in the Northern Shan States, is probably the most famous historical mine in Myanmar. One of several world-class mineral deposits within the country, it has seen near-continuous mining since the early 1400's to the present for a range of commodities including: silver, lead, zinc, copper, and nickel....

The Indo-Myanmar Ranges (IMR) of Myanmar, also known as the Indo-Burman Ranges (IBR) or the Western Ranges, extend from the East Himalayan Syntaxis (EHS) southwards along the eastern side of the Bay of Bengal to the Andaman Sea, comprising the Naga Hills Tract in the north, the Chin Hills in the middle and the Rakhine (Arakan) Yoma in the south. Th...

Neogene clastic sequences preserved in the western part of Indo-Myanmar Ranges provide detrital information that document the erosional and unroofing history of the eastern Himalayas and the Burmese Arc during the Indian–Asian collision. All of the sedimentological and provenance data link the syntectonic sedimentation and sequential evolution of t...