ten chromite ores from ophiolite complexes in se iran were analyzed mineralogically by xrd, chemically by xrf, and mineral chemistry by epma. the identified paragenesis of silicate minerals of chromite ores with the x-ray diffraction is pronounced differently. it consists of secondary phases formed as serpentine, cr-containing chlorite (kaemmererite), chromic garnet (uarovite) with preserved pa...

The Glen Torridon (GT) region in Gale crater, Mars is a with strong clay mineral signatures inferred from orbital spectroscopy. CheMin X-ray diffraction (XRD) instrument onboard the Science Laboratory rover, Curiosity, measured some of highest abundances to date within GT, complementing detections. GT may also be unique because XRD patterns samples, identified new phases, including: (a) Fe-carb...

-A glass in the intermediate composition of montmorillonite and beidellite, 50/50 in mole ratio, was treated under a hydrothermal pressure of 100 MPa, in the temperature range from 250 to 500~ and durations from 2 to 129 days. The phases identified in the products were plotted in a time-temperaturetransformation (TTT) diagram. The TTT diagram showed that the regularly interstratified montmorill...

Acrylate and methacrylate anions containing double bond and carboxylic groups, were intercalated in the interlayer region of a layered double hydroxide of formula: [Zn0.66Al0.34(OH)2](NO3)0.34 0.62H2O. The intercalation compounds obtained have been characterized for their chemical composition and with different instrumental techniques (X-ray powder diffraction, thermal analysis, FT-IR absorptio...

Strontium is an important contaminant radionuclide at many former nuclear sites. This paper investigates the effect of changing pH and ionic strength on the sorption of Sr to a range of common soil minerals. Specifically it focuses on the sorption of Sr onto illite, chlorite, goethite, and a mixed sediment. The interplay between ionic strength and pH was determined by varying the background ion...

Effects of Pure and Mixed substrates on nutritional composition, minerals and growth of Oyster Mushroom (Pleurotus ostreatus) were studied in present study. Results of the study revealed that the total protein content, ash, crude fiber and crude fat were higher in the mushroom harvested from mixed substrate (23.64, 8.17, 0.90 and 2.93%nrespectively) than that of the pure substrates (21.02, 3.40...