‎H. V. Ellsworth‎
‎Rare-element minerals of Canada‎

‎1932 department of mines, Canada "collection ""geological survey"" ""economic geology series n°11""" broché, 272p. Bon état.‎

Reference : 4598

‎En anglais. contents : introduction - lithium, rubidium, c?sium, end their minerals - beryllium and its minerals - zirconium and hafnium - tantalum and colombium - the rare earths - uranium and thorium - minerals containing uranium, thorium and rare earths - radioactivity and the radioelements - radioactive minerals as geological age indicators - geology of the rare element minerals - canadian occurrences - chemical analyses. ‎