QEMSCAN is the name for an integrated automated mineralogy and petrography system providing quantitative analysis of minerals, rocks and man-made materials. QEMSCAN is an abbreviation standing for quantitative evaluation of materials by scanning electron microscopy, and a registered trademark owned by FEI Company since 2009. Prior to 2009, QEMSCAN was developed, marketed and sold by Intellection Pty Ltd (a company owned by CSIRO) and also marketed and sold by LEO (a company jointly owned by Leica and ZEISS). The integrated system comprises a scanning electron microscope (SEM) with a large specimen chamber, up to four light-element energy-dispersive X-ray spectroscopy (EDS) detectors, an electron backscatter detector, and proprietary software and hardware controlling automated data acquisition. The offline software package iDiscover provides data processing and reporting functionality.
QEMSCAN in the context of Bauxite
Bauxite (/ˈbɔːksaɪt/ ) is a sedimentary rock with a relatively high aluminium content. It is the world's main source of aluminium and gallium. Bauxite consists mostly of the aluminium minerals gibbsite (Al(OH)3), boehmite (γ-AlO(OH)), and diaspore (α-AlO(OH)), mixed with the two iron oxides goethite (FeO(OH)) and hematite (Fe2O3), the aluminium clay mineral kaolinite (Al2Si2O5(OH)4) and small amounts of anatase (TiO2) and ilmenite (FeTiO3 or FeO·TiO2).Bauxite appears dull in luster and is reddish-brown, white, or tan.
In 1821, the French geologist Pierre Berthier discovered bauxite near the village of Les Baux in Provence, southern France.
View the full Wikipedia page for BauxiteQEMSCAN in the context of Pisolith
A pisolite (from Ancient Greek πίσον (píson) 'pea') is a sedimentary rock made of pisoids, which are concretionary grains – typically of calcium carbonate which resemble ooids, but are more than 2 mm in diameter. These grains are approximately spherical and have concentric layers reaching 10 mm in diameter.
Bauxites, limonites, and siderites often have a pisolitic structure.
View the full Wikipedia page for Pisolith