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(concentrate), a fraction of heavy minerals obtained by flushing unconsolidated natural deposits and artificially crushed rock or mineral formations. A schlich includes grains of minerals that are resistant to physical and chemical weathering and that have a density of more than 3,000 kg/m3, for example, gold, platinum, cinnabar, cassiterite, scheelite, magnetite, zircon, and diamond.

Schlich samples are taken systematically from alluvial and diluvial deposits in the course of prospecting for placer and primary deposits of useful minerals. Schlich sampling is also used in the exploration and development of placer deposits. During the process of concentrating sands from placer deposits of gold, platinum, and other metals, what is called gray schlich, containing a significant amount of foreign minerals, is obtained first and then black schlich, which is richer in valuable metals. Schlich concentrating installations or factories, concentrating tables, and separators of various designs are used to extract valuable minerals from schlich on an industrial scale.


References in periodicals archive ?
William Schlich, 'The Outlook of the World's Timber Supply', Transactions of the Royal Arboricultural Society XVI (1901): 355-387, here 358.
However, William Schlich, Ernst & Young's lead partner on the Lehman audit, stated "definitively that Ernst & Young had no advisory role with respect to Lehman's use of Repo 105 transactions and that Ernst & Young did not 'approve' the Accounting Policy" (Examiner's Report, 2010, Vol.
Schlich (history of medicine, McGill University) refutes the common belief that organ transplant was the dream of ancient medical practitioners that was only thwarted by a lack of technology.
Findlay CJ, Castura JC, Schlich P and I Lesschaeve Use of feedback calibration to reduce the training time for wine panels.
Tim Willis, The Wilkes Partnership' Suzanne Lloyd Holt, Wragge & Co' Stephen Hopkins, The Wilkes Partnership' Simon Thomas, The Wilkes Partnership' Gabrielle Newman' Andrew Schlich, AST Language Services Ltd' Kevin Varney, Varney Barfield' Ian Metcalfe, Wragge & Co LLP' Gisela Stuart, MP for Edgbaston' John Larkin, Resource Group' Rob Lissner, Gee & Co' Eddie Price, Technolink (UK) Ltd' Richard Lewis, Tuke & Ball' Peter Collings, Aston Manor Brewery' Roger Adams, UK Trade & Investments' David Marsh, CBE, David Marsh & Co' Prof William Paterson, Institute for German Studies'
The de Kwiatkowski estate announced last Monday that contracts for the farm's general manager Tony Cissell and trainer Joe Schlich had been "terminated".
Giltmier, executive director and senior fellow at the Pinchot Institute for Conservation, received the Sir William Schlich Memorial Award
Among his many awards was AFA's john Aston Warder Medal and SAF's Sir William Schlich Memorial Award.
The neologism biomedicine refers to the reduction of medicine to a branch of biology in which the genomic sciences are the most important purveyors in this rearrangement (Cambrosio, Keating, Schlich, & Weisz, 2006).
Clair went 3 for 5 with a home run and two RBIs, Bill Schlich also homered and drove in five runs, and Josh Hassell had three hits to lift the host Crusaders (14-16).
Estudando brocolis e pimentao vermelho, Bernhardt & Schlich (3) relataram nao haver diferenca significativa entre as alteracoes no conteudo de [alpha]-tocoferol e [beta]-caroteno ocorridas durante a coccao em agua, vapor, vapor sob pressao e microondas.