SSBU

Includes list of figures, list of tables, summary, conclusions, appendices.

ABSTRACT _ The study area is situated about 11 kilometers southeast of Ywangan. Total area coverage is about 25 square kilometres. The major rock units are Chaungmagyi Group, Pindaya Group, Mibayataung Group and Plateau Limestone Group. Structurally, the faults are trending NNW-SSE and NE-SW. Lead ore mineralization occurs in the Middle Ordovician age of the Wunbye Formation. It is found at two localities. Shwe Taung lead occurrence - 1 is associated with brecciated argillaceous limestone and Shwe Taung lead occurrence - 2 is associated with the dolomitic limestone, both of Wunbye Formation. The chief ore mineral is galena and associated ore minerals are sphalerite, chalcopyrite, anglesite and pyrite. Two types of alterations; the dolomitization and silicification can be recongnized. Ore microscopic study reveals that the alignments of cleavage pits are wavy and extremely curved in galena. It indicates that there have been considerable amount of deformation during and after ore deposition. Open-space filling and replacement texture are observed in the ore microscopic study. The lead mineralization is controlled by lithology, stratigraphy and structure. Shwe Taung Lead Deposit is carbonate-hosted , stratabound and epigenetic in origin as judged by its geological characteristics. According to the report of Shwe Lar Taung Mining Co.Ltd; February, 2013, estimated tonnage of Shwe Taung Lead Occurrences 1 and 2 is 2073 tonnes. Average AAS assay results of metal contents are Pb 2.02%, Zn 0.0236%, Fe 0.4676% and Ag 85ppm or g/t. Based on the geological, mineralogical and geochemical signatures, the lead ore deposits of Shwe Taung, Htaminbaung area is carbonate-hosted, stratabound and epigenetic deposits and most probably belong to a Pb-rich sub-type of the Mississippi Valley-Type (MVT) deposits.

Keywords : Shwe Taung, Wunbye Formation, carbonate-hosted, stratabound, epigenetic deposits,MVT. M.Sc. University of Yangon, 2017.

Includes references.

CONTENTS __
ABSTRACT
ACKNOWLEDGEMENTS
CONTENTS
LIST OF FIGURES
LIST OF TABLES
CHAPTER I : INTRODUCTION
1.1 Location, Size and Accessibility of the Study Area
1.2 Physiography and Drainage
1.3 Population, Climate and Vegetation
1.4 Purpose of Study
1.5 Methods of Study
1.5.1 Preliminary Investigation
1.5.2 Field Methods
1.5.3 Laboratory Methods
1.6 Previous Work
CHAPTER II : REGIONAL GEOLOGY
2.1 Tectonics and Regional Geologic Setting
2.1.1 Tectonics
2.1.2 Regional Geologic Setting
2.2 Regional Stratigraphy
2.2.1 Chaungmagyi Group
2.2.2 Molonhein Group
2.2.3 Pindaya Group
2.2.4 Mibayataung Group
2.2.5 Plateau Limestone Group
2.3 Regional Major Structure Setting
2.3.1 Sagaing Fault
2.3.2 Shan scarp Fault
2.3.3 Kyaukkyan Fault
2.3.4 Fold
2.3.5 Unconfornity
2.4 The Structure of Pindaya Range
CHAPTER III : GEOLOGY OF THE STUDY AREA
3.1 Rock Sequence of the Study Area
3.1.1 Chaungmagyi Group
3.1.2 Wunbye Formation
3.1.2.1 Name Derivation
3.1.2.2 Type section, Thickness and Distribution
3.1.2.3 Lithology
3.1.2.4 Sedimentary Structures
3.1.2.5 Stratigraphic Relationship
3.1.2.6 Correlation
3.1.3 Nan-on Formation
3.1.3.1 Name Derivation
3.1.3.2 Type section, Thickness and Distribution
3.1.3.3 Lithology
3.1.3.4 Sedimentary Structures
3.1.3.5 Stratigraphic Relationship
3.1.3.6 Fauna Content, Age and Correlation
3.1.4 Linwe Formation
3.1.4.1 Name Derivation
3.1.4.2 Type section, Thickness and Distribution
3.1.4.3 Lithology
3.1.4.4 Sedimentary Structures
3.1.4.5 Stratigraphic Relationship
3.1.4.6 Fauna Content, Age and Correlation
3.1.5 Thitsipin Formation
3.1.5.1 Name Derivation
3.1.5.2 Type section, Thickness and Distribution
3.1.5.3 Lithology
3.1.5.4 Stratigraphic Relationship
3.1.5.5 Fauna Content, Age and Correlation
3.1.6 Nwabangyi Formation
3.1.6.1 Name Derivation
3.1.6.2 Type section, Thickness and Distribution
3.1.6.3 Lithology
3.1.6.4 Fauna Content, and Age
3.1.7 Alluvium
3.2 Structural Geology
3.2.1 General Statement
3.2.2 Bedding
3.2.3 Folding
3.2.3.1 Major Folding
3.2.3.2 Minor Folding
3.2.4 Faulting
3.2.4.1 Ingyi-Ingaung Fault
3.2.4.2 Kazet Fault
3.2.4.3 Thrust Fault
3.2.5 Unconformity
CHAPTER IV : PETROGRAPHY
4.1 Petrography of the Study Area
4.2 Chaungmagyi Group
4.2.1 Meta-quartzite
4.2.2 Phyllite
4.2.3 Slate
4.3 Wunbye Formation
4.3.1 Microfacies-1 Dolomite
4.3.2 Microfacies-2 Dolomitized biopelsparite
4.3.3 Microfacies-3 Dolopeloosparite
4.3.4 Microfacies-4 Oopelsparite
4.3.5 Microfacies-5 Micrite
4.4 Nan-on Formation
4.4.1 Siltstone
4.5 Linwe Formation
4.5.1 Biomicrite (Bioclastic mudstone)
4.6 Plateau Limestone Group
4.6.1 Thitsipin Formation
4.6.1.1 Fusulinid bearing Dolomitic Packstone
4.6.2 Nwabangyi Formation
4.6.2.1 Dolomite
CHAPTER V : ALTERATION
5.1 Alteration in the Study Area
5.1.1 Dolomitization
5.1.2 Silicification
5.1.3 Oxidation
CHAPTER VI : MINERALIZATION
6.1 Lead Occurrences of Myanmar
6.2 Mineralization in the Study Area
6.2.1 Shwe Taung Lead Occurrence-1
6.2.1.1 Geology
6.2.1.2 Nature of Mineralization
6.2.1.3 Mineralogy
6.2.2 Shwe Taung Lead Occurrence-2
6.2.2.1 Geology
6.2.2.2 Nature of Mineralization
6.2.2.3 Mineralogy
6.3 Geochemical Results
6.4 Ore Mineralogy of the Study Area
6.4.1 Galena
6.4.2 Anglesite
6.4.3 Sphalerite
6.4.4 Pyrite
6.4.5 Chalcopyrite
6.4.6 Silver
6.5 Ore Textures
6.5.1 Open-space Filling
6.5.2 Replacement Texture
6.6 Paragenetic Sequence
6.6.1 Pyrite
6.6.2 Chalcopyrite
6.6.3 Sphalerite
6.6.4 Galena
6.6.5 Anglesite
6.7 Controls of Mineralization
CHAPTER VII : GEOCHEMICAL INVESTIGATION
7.1 General Statement
7.2 Statistical Treatment of Geochemical Data in the Lead Occurrences-1 and 2
7.2.1 Distribution of Element Forms from Ore Sample Results in the Study Area
7.3 Regression Analysis
7.4 Cluster Analysis of Ore Samples (Element Forms)
7.5 XRF Results of the Samples in the Study Area
7.5.1 Distribution Contour Map of Element Forms in the Study area.
CHAPTER VIII : ORE GENESIS AND ORE DEPOSIT TYPE
8.1 Probable Ore Genesis
8.2 Ore Deposit Types
8.2.1 Carbonate- Hosted Lead-Zinc Deposits
8.2.1.1 LTM Deposits
8.2.1.2 SEDEX Deposits
8.2.1.3 MVT Deposit
8.2.2 Ore Deposit Type of Shwe Taung, Htaminbaung Area
CHAPTER IX : MINING AND ECONOMIC ASPECTS
9.1 Mining
9.1.1 Artisanal Mining
9.1.2 Small-scale Mining
9.2 Economic Aspects
9.2.1 Tonnage Estimation of Shwe Taung Lead Occurrences 1 and 2
9.3 Lead Prices
9.4 World Lead Mine Production and Reserves
9.5 Used of Lead
9.5.1 Batteries
9.5.2 Cable Sheaths
9.5.3 Shipbuilding
CHAPTER X : SUMMARY AND CONCLUSIONS
REFERENCES
APPENDICES Myo Khaing. Lead mineralization of the Shwe Taung prospect, Htaminbaung area, Ywangan township, Shan State (South) /