Tantalum, an important metal for high-technology applications, is recovered from oxide
minerals that are present as minor constituents in rare-metal granites and granitic rare …

Approximately five percent of all known minerals contain U as an essential structural
constituent (Mandarino 1999). Uranium minerals display a remarkable structural and …

By 1911, the atomic weight of uranium had been refined to 238.5 (Gmelin, vol. A2, 1980a).
The natural isotope 235 U was discovered in 1935 by mass spectrometry. The artificial …

A systematic review of the oxide minerals of niobium and tantalum is presented, including
varietal names, crystal chemistry, structural features, relationships to other phases and …

This paper provides a review and synthesis of research literature on the geological,
mineralogical and geochemical data to uranyl mineralization of the Arabian Nubian Shield …

Fleischer 60, 61 has shown that more than 160 species can be identified that contain
uranium as an essential element. In many additional species uranium is known to play a …

Relatively low-temperature, secondary alteration is common in samples of metamict betafite
and initially proceeds by the substitution mechanisms ANaYF→ A⃞Y⃞, ACaYO→ A⃞Y⃞ …

Uranium mineralization in the El Erediya area, Egyptian Eastern Desert, has been affected
by both high temperature and low temperature fluids. Mineralization is structurally controlled …

В монографии рассматривается приложение концепции минеральных систем для
количественной оценки сходства и различия геологических объектов и эволюции …

This study focuses on the relationship between U and pyrochlore in the world-class Sn-Nb-
Ta (U, Th, REE, Li) Madeira deposit within the Pitinga mining district of northern Brazil. The …