Alkali amphibole asbestus is widely distributed in a Mesozoic terrestrial redbed.Preliminary mineralogical study shows that it belongs to magnesian riebeckite a
DTA and TGA curves are presented for 117 samples of sulfide and sulfosalt minerals from a certain eassiterite-sulfide deposit. The differential thermal and ther
The regional stratigraphy composed mainly of pre-Sinian gneisses migmatizationized to raring extent. Basic complexes, consisting largely of anorthosite andmeasu
Two stages of intrusion have been recognized for Paleozoic pegmatites in this district. The pegmatites occur as several thousands of dikes, with 84 per cent of