the dehno granite massive is located in the east dehno village and southern khomein city and within themetamorphic sanandaj–sirjan zone. the composition of these rocks include: granodiorite, quartzdiorite(tonalite), monzogranite and leucogranite. quartz, alkali feldspar, plagioclase, biotite, andalusite, hornblendemuscovite, tourmaline, zircon and apatite are examples of the existing major and ...

nezam-abad area is located in southwest of shazand (arak) which is a part of sanandaj-sirjan zone. major intrusive rocks of nezam-abad are quartz diorite and minor amount of granodiorite. leucogranitic, pegmatite dykes and quartz-tourmaline veins were intruded the quartz diorite. quartz diorites are mainly composed of plagioclase, hornblende, biotite, quartz and pyroxene as major minerals. majo...

The Cuonadong Sn–W–Be polymetallic deposit in the Himalayan leucogranite belt is a representative hydrothermal deposit. role of fluid exsolution directly from magma and reaction with surrounding rocks for ore-forming element enrichment still controversial. Tourmaline significant B-bearing mineral deposit, its geochemical B isotopic signatures can record source evolution fluid. Two types tourmal...

We present a high-resolution in situ study of oxygen and boron isotopes measured tourmaline from the world-class San Rafael Sn (–Cu) deposit (Central Andean tin belt, Peru) aiming to trace major fluid processes at magmatic-hydrothermal transition leading precipitation cassiterite. Our results show that late-magmatic pre-ore hydrothermal has similar values δ18O (from 10.6‰ 14.1‰) δ11B −11.5‰ −6....

Hexavalent chromium (Cr (VI)), an anthropogenic heavy metal pollutant, is harmful to human beings, due its carcinogenicity. In this study, a tourmaline–biochar composite (TMBC) was synthesized remove Cr (VI) from aqueous solution. The effects of different ratios (TM:BC) and pyrolysis temperatures on TMBC adsorption performance were compared. samples characterized by X-ray diffraction (XRD), Fou...