Coal Slag Abrasive
This is from an environmental tapelift collected outside. The slag particle is the large particle in the upper right quadrent. The Black particle just left of center is a charred wood fragment. Coal slag abrasive may be very dark in appearance. The color of coal slag is normally dark as a result of the iron content in the glass. There may be mineral inclusions including magnetite in the abrasive.
Transmitted Off Crossed Polarized Light and Reflected Darkfield Illumination
Definition/Function:
Coal slag is produced from the debris remaining after the combustion of the coal. It is a glassy material composed of the mineral inclusions in the coal that were melted together by the heat in the coal-fired boiler.
