Abstract Fly and bottom ash (FABA) produced primarily from coal combustion in a coal-fired power plant consists of fine particles the organic inorganic mixture trace elements. Eight FABA samples plants Java, Indonesia, had been collected for composition rare earth element Yttrium (REY) mode occurrence identification. The geochemical both major elements was determined by inductively coupled plas...

Abstract The Drewer quarry located in the Rhenish Massif is a well-studied outcrop that comprises Upper Devonian (Famennian) to Lower Carboniferous (Viséan) strata. Within deposits two black shale intervals have been described are linked global oceanic anoxic events, Hangenberg Event and Alum Shale Event. shales associated with Middle Tournaisian contain abundant phosphatic concretions, which w...

Machine learning is the main technical means for lithofacies logging identification. As target of shale oil spatial distribution prediction, mud petrography subjected to constraints stratigraphic inhomogeneity and information redundancy. Therefore, choosing most applicable machine method different geological characteristics data situations one key aspects high-precision However, only a few stud...

Building stones and clay-rich Nile mud were ancient Egypt’s main raw construction materials. While the mud was easily accessible along the Nile river valley, the immense quantities of the different stone materials used for construction of the famous pyramids, precious temples and tombs needed a systematic quarrying organization, well arranged transport logistics over extreme distances and a hig...

The grade of a quartz ore is not a measure of its chemical reactivity. A high grade quartz sample (B) showed low reactivity in sodium silicate production. Structural imperfection usually occurs due to lattice defects in the quartz tetrahedron as a result of several substitutions that happen during mineralization. The random distortion of the quartz tetrahedron that could be affected by various ...

Abstract The middle Miocene Warukin Formation in the Asem-Asem Basin (Kalimantan) contains a 20-m-thick coal seam (BL1) that is mined at Jumbang mine. seam, formed tropical peat, was studied to reconstruct peat-forming environment and compare its characteristics with those of similarly aged coals from Tutupan mine Barito ( ~ 15 Ma) subtropical Leoben Eastern Alps (Austria). Although all were om...