Johnston (1991) reported on the Ponderosa mine and its gem materials, characterizing the labradorite as 70% anorthite and 30% albite, placing it at the labradorite/bytownite boundary. The sunstone ...

Since Ca-plagioclase (anorthite) is a major component of the substrate and dissolves quickly under these geochemical conditions, kaolinite and montmorillonite are the most abundant clay minerals ...

Minerals found in micaceous lenses in Snezhnoe include various types of mica (fuchsite and phlogopite), plagioclase (from albite to anorthite), and scapolite (40–60% meionite), as well as ruby and ...

For the first time in history, scientists have analyzed actual samples from the lunar farside—thanks to China’s Chang’e-6 ...

In a paper published in National Science Review, a research team from the Guangzhou Institute of Geochemistry, Chinese ...

La subduction est le processus d'enfoncement d'une plaque tectonique sous une autre plaque de densité plus faible, en général une plaque océanique sous une plaque continentale ou sous une plaque ...

The concentration of K is about 0.1 wt % for SK, HP, and AH. KS has twice the amount, and HaBKs has 10 times less than KS. In the case of Na, the content is similar, except for KS with the highest ...

Cette liste (non exhaustive) répertorie les minéraux sous leurs noms français usuels ; elle comprend également les noms de variétés d'espèces minérales, lorsque ces variétés présentent un caractère ...

Boron is a micronutrient for plants required for several biochemical processes ( Cakmak and Romheld, 1997). Boron deficiency is a widespread problem in relatively humid areas, especially in sandy ...