Based on the identified typomorphic features of placer gold, a set determined morphogenetic criteria is proposed to identify genesis gold content and different sources in platform areas, which allow more correctly selecting search methods improving efficiency forecasting ore deposits. Gold particles larger than 0.25 mm with signs wind-worn processing indicate formation autochthonous aeolian pla...

metres north of Stewart, British Columbia. Reserves calculated in 1989 by the previous owner, Western Canadian Mining Corporation. are 66 million tonnes averaging 0.8 per cent copper and 0.33 gram per tonne gold using a 0.5 per cent copper cut off, Access to the deposit is by helicopter from Tide Lake airstrip 50 kilometres north of Stewart. The deposit was diamond drilled extensively by West...

We present a novel study of fluid inclusions in the vein quartz Kyvvozh gold placer field and gold-quartz intergrowths from (methods homogenization, cryometry, Raman spectroscopy were used). determined that homogenization temperature fluctuated range 220–425 °C, liquid phase was represented by aqueous solutions, predominantly sodium magnesium chloride. The gold–quartz is 220–330 an solution chl...

The paper presents some of the advanced experimental techniques and apparatuses that have been developed by the authors for testing the hydromechanical behaviour of shales. A methodology established for the analysis of the water retention behaviour in non-isochoric conditions is introduced; the method allows for the determination of the main drying and wetting paths in addition to the volume ch...

Thiobacillus ferrooxidans is found in many Alaskan and Canadian drainages contaminated by metals dissolved from placer and lode gold mines. We have examined the iron-limited growth and iron oxidation kinetics of a T. ferrooxidans isolate, AK1, by using batch and continuous cultures. Strain AK1 is an arsenic-tolerant isolate obtained from placer gold mine drainage containing large amounts of dis...

Abstract Placer gold particles have traditionally been considered as either detrital products of weathering or authigenic minerals growing within placers. Recent advances in understanding chemistry/bio-geochemistry demonstrate that growth specific environments is plausible, but opinions differ on the importance ‘new’ overall placer inventory. Here we draw upon visual inspection over 40 000 poli...