introduction the baqoroq cu-zn-as deposit is located northeast of the town ofanarak in isfahan province, in theeast central areaof iran. copper mineralization occursin upper cretaceous carbonate rocks.studyof thegeologyof the nakhlak area, the location ofa carbonate-hosted base metaldeposit, indicatesthe importance of stratigraphic, lithological and structural controls in the placement of this ...

Fossil worm tubes of Cretaceous age preserved in the Bayda massive sulfide deposit of the Samail ophiolite, Oman, are apparently the first documented examples of fossils embedded in massive sulfide deposits from the geologic record. The geologic setting of the Bayda deposit and the distinctive mineralogic and textural features of the fossiliferous samples suggest that the Bayda sulfide deposit ...

When a steel pilot plant reactor was emptied, and left exposed to the humid summer atmosphere over a weekend, a heavy corrosion deposit formed on the inner surface. Because the process stream contained triflic acid (trifluoromethanesulfonic acid, CF3SO3H), the engineer wanted to determine whether the deposit contained triflate(s) [1]. The brown deposit was ground in a mortar and pestle. The maj...

SiC-coated graphite limiter material was eroded by a plasma during the plasma edge experiments in Alcator C, and redeposited on the molybdenum surface of the Janus probe. Surface morphology, composition and structure of the deposit was examined after a total exposure time of ~ 1000 seconds. The redeposited material typically showed a "layered" morphology. AES depth profiles revealed increased o...

[1] Mars Orbiter Laser Altimeter (MOLA) topographic data support the presence of an extensive Hesperian-aged volatile-rich south polar deposit, the Dorsa Argentea Formation (DAF) and related deposits, underlying the present Amazonian-aged cap. The eastern margin of these deposits displays further evidence for meltback, ponding, and drainage of the volatile-rich deposit. Channels leading from th...