The Golden Ridge gold deposit is located in southwestern New Brunswick, the Canadian Appalachians. Gold mineralization consistently associated with acicular arsenopyrite, and to a lesser degree pyrite, disseminated host rocks, sulphide veinlets, quartz-carbonate veins, breccia matrix. According petrographic-based textural differences, four types of pyrite two arsenopyrite are recognized assembl...

23 24 Large rounded pyrite grains (>1 mm), commonly referred to as ‘buckshot’ pyrites, are a characteristic feature of 25 the auriferous conglomerates (reefs) in the Witwatersrand and Ventersdorp supergroups. Detailed petrographic 26 analyses of the reefs indicated that the vast majority of the buckshot pyrites are of reworked sedimentary origin, 27 i.e., that the pyrite originally formed in th...

Offshore Zhoushan sediments are a potential area for shallow gas resources in China, where authigenic pyrite is widely distributed. Pyrite content, size distribution, and morphology influenced by depositional conditions sensitive to environmental changes. This study investigated the pyrites or gypsums of core JC-1 offshore Zhoushan. Scanning electron microscopy was used observe identify various...

These four volumes form part of a series of >.n v.?lumes to be published on this subject of Indian clleinistry and alchemy. In all these volumes the j*riginal Sanskrit text is first quoted and this is followed by an English translation. Volume I deals mainly with Mercury, its attributes, purification, different operations the metal, different preparations of mercury and l"eir uses, as well as t...

Present address: S.C. Hsu, IT Corporation, 111 N. Canal St, Suite 941, Chicago IL 60606, USA Abstract Acid drainage containing high levels of iron, manganese, and sulfate is a pollution problem widely associated with abandoned coal mines. The remediation of these sites commonly falls to public agencies, so policy-makers need to allocate scarce resources over many sites and to find cost-effectiv...

The Fule deposit is a typical Cd-, Ge- and Ga-enriched Pb-Zn located in the southeast of Sichuan–Yunnan–Guizhou polymetallic ore province China. Zoned, euhedral cubic pentagonal dodecahedral anhedral pyrites were observed, they are thought to comprise two generations. First generation pyrite (Py1) homogeneous entirely confined crystal core, whereas second (Py2) forms bright irregular rims aroun...

Major trace element analyses, including pyrite chemistry of pyritic mudstones shallow-marine Singa Formation Pennsylvanian–Early Permian age have been carried out to assess gold potential, the source sulfur and organic matter. Regionally, spatially correlates with Bohorok (Sumatra, Indonesia), Kaeng Krachang group (Thailand), Lebyin (Burma or Myanmar). In Southeast Asia, this formation is impor...

Iron-sulphur proteins are ancient and drive fundamental processes in cells, notably electron transfer and CO2 fixation. Iron-sulphur minerals with equivalent structures could have played a key role in the origin of life. However, the 'iron-sulphur world' hypothesis has had a mixed reception, with questions raised especially about the feasibility of a pyrites-pulled reverse Krebs cycle. Phylogen...