zafarabad iron deposit is located northwest of divandareh, in the northern margin of sanandaj-sirjan plutonic-metamorphic zone. the deposit is in lentoid to tubular shape, within a shear zone and occrrued in host rocks of calc-schist and limestone. magnetite with massive, cataclastic and replacement textures are the main phases, while pyrite and other sulfide minerals are found. major and trace...

Fibrous erionite is a mineral fibre of great concern but to date mechanisms by which it induces cyto- and geno-toxic damage, and especially the role of iron associated to this zeolite species, remain poorly understood. One of the reasons is that we still don't know exactly where iron is in natural erionite. This work is focused on fibrous erionite-Na from Jersey (Nevada, USA) and attempts to dr...

Iron is essential for aerobic organisms. Additionally, photosynthetic organisms must maintain the iron-rich photosynthetic electron transport chain, which likely evolved in the iron-replete Proterozoic ocean. The subsequent rise in oxygen since those times has drastically decreased the levels of bioavailable iron, indicating that adaptations have been made to maintain sufficient cellular iron l...

Three tetracyclines (tetracycline, doxycycline, and minocycline) were found to possess iron-chelating activity in a colorimetric siderophore assay. Determination of MICs indicated that the activity of doxycycline against the periodontopathogen Actinobacillus actinomycetemcomitans was only slightly influenced by the presence of an excess of iron that likely saturates the antibiotic. On the other...

The two main texts of Ayurveda viz. Charaka Samhita and Sushruta Samhita. which were said to be written around 1500 B.C. mentioned the use of iron. Iron powder pocessed along with herbs like Amalaki (Emb/ica officina/is), a rich source of ascorbic acid, is indicated in Pandu (anaemia). Vagbhata, a 4th Cent. A.D. author of Ashtangahridaya considered iron as the best among drugs used for Pandu (a...

Nickel (Ni) and associated minerals (Cr Mn) are naturally occurring substances in ultramafic laterites soil. It may be found our vegetables grains when agriculture is grown laterites. This study aimed to assess the contamination of Ni edible crops affected by soil volume mono- mixed cropping on limonitic laterite The investigation was conducted Peanut (Arachis hypogaea L.) Choy Sum (Brassica ra...

In this work, the experiment was conducted to investigate the effect of temperature and sub-bituminous coal on upgrading nickel laterites ores by carbothermic reduction. The reduction was carried out in the muffle furnace at a temperature ranging of 800-1100 o C. The produced calcine from reduction step was grounded in vibrating mill, mixed with water and passed on a magnetic separator to separ...