An unusual occurrence of arsenic-bearing pyrite in the Upper Freeport coal bed, west-central Pennsylvania

Autor:	Jean A. Minkin, Leslie F. Ruppert, C. Blaine Cecil, James J. McGee
Rok vydání:	1992
Předmět:	business.industry General Chemical Engineering Energy Engineering and Power Technology Mineralogy chemistry.chemical_element Electron microprobe engineering.material Diagenesis Fuel Technology chemistry Pennsylvanian Facies engineering Coal Pyrite business Arsenic Geology Specific gravity
Zdroj:	Energy & Fuels. 6:120-125
ISSN:	1520-5029 0887-0624
Popis:	Scanning electron microscopy and electron microprobe analysis were used to identify a rare type of As-bearing pyrite in selected specific gravity separates from the Pennsylvanian age Upper Freeport coal bed, west-central Pennsylvania. Arsenic was detected mainly in cell-wall replacement pyrite where concentrations ranged from nondetectable to 1.9 wt%. Although the majority of arsenic-bearing pyrite in the Upper Freeport coal bed is concentrated in massive and late diagenetic pyrite morphologies, the rarer As-bearing cell-replacement pyrite was observed in both light and heavy gravity separates from the three coal facies examined
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::604e1d54336b5f2832ffc80b02c85825 https://doi.org/10.1021/ef00032a002 Zobrazit plný text záznamu