ASEAN Minerals Information

  • Increase font size
  • Default font size
  • Decrease font size
ASEAN Minerals Information

Application of Coal Petrography and Geochemistry to Paleogene Paleoenvironments and Ranks of Coal...

E-mail Print PDF

Abstract

Drilled cores of coal samples from the main coal seams of the Mae Moh Paleogene basin have been investigated geochemically and petrographically. Detailed petrography from polished sections reveals that the studied coals consist largely of macerals 78% with small amount of inorganic materials 22%. Huminite group constitute about 47% of the total macerals, including gellinite and densinite with rare telinite and texto-ulminite. The second common maceral is 23% liptinite group which includes liptodetrinite, alginite, omorphinite, cutinite, sporinite, exsudotinite and suberinite. Inertinite group 8% is present in funginite of sclerotinite type, semifusunite and rare fusinite. The 22% of inorganic materials ore mainly pyrite quartz and clay mineral  with subordinates of diatomites, and volcanic ashes.

Proximate and ultimate analysis along with calorific value analysis have been used for classify in cool ranks based on ASTM D388 classification system. On results show that geochemical contents in studied cool samples ore almost constant suggesting that  Mae Moh cools ore homogeneous. The overage weight% as received  basis of ash,fixed carbon, sulphur contents, volatiles, carbon and hydrogen contents ore 13%, 26%, 4%, 31%, 71% and 4% respectively.

Read more...
 

The Opportunity of Potash Deposit Development in Thailand

E-mail Print PDF

1. Introduction

In modern agricultural, synthetic fertilizer is applied to provide nutrients essential for plant development. The fertilizer can be classified by major nutrients into three types, namely, nitrate, phosphate and potash.

Potash is a general term used for compounds of potassium. It has a close genetically relation with rock salt (halite mineral), which usually deposited together in the restricted basin of sea water. Both minerals are classified as evaporate minerals.

There are only two major types of potash minerals in Thailand, carnallite and sylvite. Carnallite (KCl.MgCl2.6H20) has a theoretical K2O content of 16.95% and a specific gravity of 1.7. It is colourless to orange, red or pale rose. Most of carnallite is pure and generally shows little evidence of bedding. Sylvite (KCl) is candle white and bricky red, which has a theoretical K2O content of 63.17%. It has a specific gravity of 2.0.

Read more...
 

The Geology and Economic Potential of the Muang Pha Mafic-Ulramafic Complex, Paklai and...

E-mail Print PDF

Abstract

The Muong Pha concession is located in Paklai and Phieng districts, Sayaboury province, Lao PDR, where the area has potential for the economic Cu-Ni-PGE mineralisation and is associated with mafic-ultramafic rocks intruding a sequence of andesitic-bosoltic volcanics and sedimentary rocks.

Geological mapping and petrochemistry studies suggests that the host rock is a layered mafic-ultramafic intrusive dunite/peridotite (lower layer), clinopyroxenite (middle layer), cumulate gabbro (upper layer), and minor rodingite as sills and dykes in the dunite. Soils are  largely residual, and bedrock lithology can be inferred with a high degree of reliability from ratios of  immobile or weakly  mobile  elements  (Zr, Ti, AI, Cr, and Sc) in soils which supports  outcrop geological mapping. Inferred bedrock lithology from soils shows a close match to that determinedfrom less extensive rock chip sampling.

Read more...
 

Report on Bauxite Resources Exploration in Laos

E-mail Print PDF

I. Project Overview

Laos Service Mining Co., Ltd. (LSM in short) is a joint venture established under a cooperation agreement signed in March 2011 between Hong Kong branch of Chinalco and Laos Service Inc. (LSI). It is registered in Pakse, Champasak Province, which is held 60% by the former and 40% by the later.

LSM owns two mining right areas, covering 291m2 in addition to a gold and copper polymetallic mining area, covering 530m2 ; the three mining right areas are located in the junction of Attapeu Province and Se Kong Province in the southern Laos. The exploration work at the earlier stage of the mining rights areas are scarce, which lacks systematic engineering control and sample analysis and yielded no information on the spatial distribution, scale, occurrence, formation and ore qualities, etc. of the orebody except for a few geological data obtained from a small number of mountain engineering. Those materials are of minor significance for the development and comprehensive utilization of mineral resources. For this reason, the joint venture considered it is necessary to conduct systematic and effective resource exploration work on the three mineral areas. As of to date, those exploration work have been in orderly progress, and have obtained some results. Preliminary survey and exploration to delimitate orebody has been concluded on two of the bauxite mining areas, and a complete bauxite exploration report is also completed.

Read more...
 

Progress on the Application of UNFC-2009 to Mineral Resources in Thailand

E-mail Print PDF

Abstract
This paper is aimed to introduce the United Nations Framework Classification (UNFC) developed by UNECE and report on the progress an application of UNFC-2009 to mineral resource classification in Thailand. UNFC-2009 is aninternationally acceptable scheme on reserve/resource classification and reporting of both fossil energy and mineral commodities. It is a generic principle-based system using a numerical and language independent coding scheme. UNFC-2009 is the latest version publicly released in 2013 in which quantities are classified on the basis of the three fundamental criteria of economic and social viability (E), field project status and feasibility (F), and geological knowledge (G) and combinations of these criteria produce a three-dimensional coding block system. The combined coding, orderly given EFG, then can be categorized into classes (i.e. commercial project, potentially commercial project, non-commercial projects, and exploration projects). UNFC-2009 is designed to ensure alignment with other commonly employed systems in the extractive industries and can reflect conditions in the economic and social domain, including markets and government framework conditions, technological and industrial maturity and other uncertainties. This system captures the common principles and delivers a consistent reporting tool for these activities, irrespective to the commodity involved.

Read more...
 


Page 3 of 42

Poll

What kind of information you need?
 

Statistic Counter

Who's Online

We have 10 guests online

Stats Counter