In the Bazhenovskoye chrysotile–asbestos deposit (Middle Urals), nephrite bodies of serpentinite type were found on contact after gabbro rodingites and serpentinites. The color is uniform to non-uniform, green light green, bluish greyish whitish. Spots, streaks, lenticules bright bluish-green or, contrary, are sometimes noted. mostly comprised tremolite. Chromite decreases quality ornamental st...

Lodran is a unique meteorite consisting of roughly equal amounts of metal, olivine, and pyroxene with minor amounts of sulphide, chromite, phosphide, chrome-diopside, and a new phase with a composition close to (K,Na)A1SisO12. Zahringer reported planetary-type rare gases in both the metal and silicates, suggesting a primitive nature. The pyroxene composition is Fs13.s with little variation. Oli...

The aim of this work is not only the synthesis of black ceramic pigment with spinel structure using local and inexpensive minerals (chromite and manganese ores) but also throw some light on the relations between the structure and the colour of obtained pigment. Ultimate utilization spinel solid solution in ceramic materials is mostly due to their structure characteristics, their thermal and che...

The process of assessing the public health risk of exposure to particular environmental contaminants is complicated and full of assumptions and uncertainties (1,2). However, the problems of assessing risks for chromium exposure are unusually complex (3,4). The problems posed by current investigations of chromiumcontaminated soil in northern New Jersey (5), in part, provided the impetus for a co...