title: Chemical species in fly ash from coal-burning power plants.
abstract: Fly ash specimens from four power plants in the Tennessee Valley Authority system have been separated into three matrices: glass, mullite-quartz, and magnetic spinel. Chemical species of trace elements are defined to a large extent by the matrices that contain them. The magnetic component of fly ash is ferrite. The mullite-quartz phase is relatively pure and can be recovered as a resource.
authors.forename: L D
authors.initials: LD
authors.lastname: Hulett
authors.forename: A J
authors.initials: AJ
authors.lastname: Weinberger
authors.forename: K J
authors.initials: KJ
authors.lastname: Northcutt
authors.forename: M
authors.initials: M
authors.lastname: Ferguson