By D. Hutchison, P G JEFFREY
A realistic advisor to the equipment in most cases use for the total research of silicate rock fabric and for the decision of all these parts found in significant, minor or hint quantities in silicate and different rocks which are usually, more often than not or
occasionally made up our minds by way of equipment which are thought of to be primarily chemical in personality. Such equipment comprise these established upon spectrophotometry, flame emission spectrometry and atomic absorption spectroscopy, in addition to gravimetry, titrimetry and using ion-selective electrodes. Separation phases are defined in complete, utilizing precipitation, solvent extraction, distillation, and ion-ex techniques as applicable. the hot version has been totally revised and updated.
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Extra resources for Chemical Methods of Rock Analysis
Displace the clock glass slightly and add 100 ml of concentrated nitric acid. Replace the cover glass and return the beaker to the steam bath, heating until all reaction has ceased. Rinse and remove the cover glass and evaporate to dryness. Dissolve the residue in about 100 ml of water, acidifying with a few drops of hydrochloric acid if necessary. Make the solution just alkaline to methyl red or bromocresol purple indicator, digest on a steam bath for 10 minutes and collect any small residue on an open-textured filter paper.
The use of borax (sodium tetraborate), or combinations of boric oxide, boric acid or borax with sodium carbonate has achieved some prominence in the analysis of (1*0 for the decomposition of materials rich in alumina, and has been recommended refractory minerals such as corundum, and chromium- and zirconium-bearing materials. It can be used with advantage for the analysis of kyanite, sillimanite and other aluminosilicates. Borate-carbonate melts disintegrate readily in dilute hydrochloric acid giving solutions that can be evaporated for the determination of silica.
Of a 1 g portion of ground silicate rock material. It is based upon the use The broad outline of the scheme and some of the methods used were devised in the nineteenth century, but continuous development has occurred since then, largely by way of refining procedures in the light of subsequent knowledge and experience. -29CMRA-D 30 Chemical Methods of Rock Analysis It should also be noted that gravimetric procedures for the determination of calcium and magnesium have now been almost entirely supplanted by procedures based upon titration with EDTA or atomic absorption spectrometry.
Chemical Methods of Rock Analysis by D. Hutchison, P G JEFFREY