Jones riffle

Jones riffle

[′jōnz ‚rif·əl]
(mining engineering)
An apparatus used to reduce the size of a sample to a desired weight; consists of a hopper which passes samples to a series of open-bottom pockets, each of which divides the sample into two equal parts, and the next pass of each part gives a quarter of the original sample, and so on until the desired sample is obtained.
References in periodicals archive ?
35 millimetres), split using a standard Jones riffle splitter to a nominal 250 grams sample and pulverized to a nominal minus 150 mesh (0.
35 mm) reduced in size using a standard Jones riffle splitter to a nominal 200 - 250 gm sample, then pulverized to a nominal minus 150 mesh (0.
35 mm) using a TM Engineering Rhino jaw crusher, riffle split using a standard Jones riffle splitter to a nominal 200 - 250 gm sample, then pulverized to a nominal minus 100 mesh (0.
From each original sample, a sub-sample of 2 kg is produced, using a single-stage Jones riffle splitter and repeated passes with the final sub-sample being systematically obtained from the right side of the splitter.