Abstract. The reaction of serpentinized peridotite with CO2-bearing fluids to form listvenite (quartz–carbonate rock) requires massive fluid flux and significant permeability despite an increase in solid volume. Listvenite serpentinite samples from Hole BT1B the Oman Drilling Project help understand mechanisms feedbacks during vein formation this process. Samples analyzed study contain abundant...

the gandy gold-base metal deposit is located in tertiary torud-chahshirin volcano-plutonic range, north of central iran. various styles of gold mineralization occur throughout the range. mineralization at gandy occurs in close spatial relation with rhyolitic domes in a caldera setting in a series of narrow brecciated veins. two mineralogically and spatially different argillic alterations have a...

A method of bio-assay of the fibrogenicity of respirable dust is described. Quartz, coal, and quartz-coal dust mixtures were administered to mice via the tail vein, and liver collagen was estimated chemically. Groups of mice that had received doses of 10, 15, and 20 mg. of these dusts were killed at intervals of 10, 20, and 30 weeks after injection. There was, in general, a linear relation betw...

introduction the study area is located in the central part of the khaf- kashmar- bardaskan volcano-plotunic belt (briefly kkbb). several iocg deposits such as tanourjeh au-bearing magnetite deposit and kuh-e-zar specularite-rich au deposit have been explored in kkbb. geology, alteration, mineralization, geochemistry and fluid inclusion results in kashmar suggest the iocg type au-bearing magneti...

The Hongqiling is a vein-type Sn-W polymetallic deposit in southern Hunan (South China). It geologically located on the northern margin of Nanling metallogenic belt. Based mineral assemblage and vein crosscutting relationship, three mineralization stages were identified: (S1: cassiterite, wolframite, scheelite, arsenopyrite, molybdenite, pyrite, chalcopyrite, quartz), Pb-Zn (S2: pyrrhotite, gal...