| Home  | About ScienceAsia  | Publication charge  | Advertise with us  | Subscription for printed version  | Contact us  
Editorial Board
Journal Policy
Instructions for Authors
Online submission
Author Login
Reviewer Login
Volume 50 Number 5
Volume 50 Number 4
Volume 50 Number 3
Volume 50 Number 2
Volume 50 Number 1
Volume 49 Number 6
Earlier issues
Back

Research Article

ScienceAsia 6 (1980): 030-045 |doi: 10.2306/scienceasia1513-1874.1980.06.030

 

X-RAY POWDER DIFFRACTION STUDY OF SOME MINERAL COMPONENTS OF NIOBIUM-TANTALUM FAMILY

 

S. PRAMATUS and R. KRITAYAKIRANA

Summary: Mineral components of niobium-tantalum family from some mines in Thailand have been studied using the X-ray powder diffraction method. Among these are found columbite-tantalite, niobian rutile, and ilmenorutile, mostly mixed with cassiterite. The unit cell dimensions of these minerals are refined by the least-squares method. The powder diffraction data from the powder photographs taken by the Guinier-Hagg focusing camera; are obtained in the form of tables. These photographs can be more quickly and accurately used as local identification standards.

Download PDF

Department of Physics, Faculty of Science, Chulalongkorn University, Bangkok 5, Thailand

Received 12 November 1979