Chromitite lenses rich in the platinum-group elements (PGE) have recently been discovered in the deeper part of the mantle section of the northern part of the Oman ophiolite. In terms of stratigraphic level, there are two types of chromitite: Moho transition zone (MTZ) and mantle types. The mantle type can be further classified into two subtypes: PGE-poor and PGE-rich. Platinum-group minerals (...

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...

The 53Mn-53Cr isotope systematics in ordinary chondrites constrains the accretion and thermal history of their parent bodies. Mineralogical observations olivine-spinel geothermometry suggest that chromite formed during prograde metamorphism with amount increasing petrologic grades type 3 to 6 chondrites. Assuming a chondritic evolution respective bodies, 53Cr/52Cr model ages for range from 3.99...

Ferrochrome (FeCr) is the main source of virgin chromium (Cr) units used in modern-day containing alloys. The vast majority produced Cr during production stainless steel, which owes its corrosion resistance mainly to presence Cr. In turn, steel from Cr-containing scrap metal and FeCr, a relatively crude alloy between iron (Fe) FeCr an energy material-intensive process, wide variety by-products,...

In a post-pandemic world, health and environmental safety will become more important issue than it was before the COVID-19 pandemic. Several fields of engineering, including foundry industry, have already adopted measures in workplace. The risk pulmonary disease caused by inhalation fine particles silica sand, main moulding material used is rampant that industry. terms protection, new regulator...