In recent years, a new type of material called Philippines “Dushan jade” has appeared in the gemstone market China. This material, very similar appearance and physical properties to Dushan jade, an important ancient jade with long history China, is causing confusion poses identification difficulties. Microscopy, electron probe microanalysis, Fourier transform infrared (FTIR) spectroscopy, Raman...

Rodingite represents a particular metasomatic rock type that occurs as dykes or lenses in association with serpentinized ultramafic rocks and typically consists of Ca-rich, often hydrated silicate minerals. Rodingites have been recognized source information on fluid compositions their circulation both ocean floor subduction environments. Yet, the nature protoliths, chemistry origin fluids, deta...

The melt-quenching approach was used to prepare phosphate–titanite glasses with the composition P2O5-Na2O-CaO-8KF-CaCl2-xTiO2 (where x = 2, 4, and 6) in a mol %. optical, physical, shielding properties, such as mass attenuation coefficient (MAC), half-value layer (HVL), effective electron density (Neff), atomic number (Zeff), of were investigated at energies ranging between 15 200 keV. paramete...

The Osnytsky block is a constituent part of the Osnytsky-Mikashevytsky volcano-plutonic belt. leading place in geological structure occupied by rock association, which includes number plutonic formations from gabbro to leucocratic granites (gabbro-diorite-granodiorite-granite association), formed Paleoproterozoic — 1,98—1,95 Ga. results lead-lead isotope dating titanites diorites, opened RPZ-5 ...

Abstract Although the evolution of residual melts in magmatic systems controls their eruptability and ore-forming potential, compositions are obscured plutonic rocks by a protracted near-solidus absence interstitial glass. Here, we trace melt from Strontian Intrusive Complex, Scotland, using element chemistry amphiboles, titanites which intergrown with amphibole rims. Laser ablation mapping rev...