R.E. Stevens R. C. Wells 1934 Methods are described which afford a determination of each member of the alkali group and are successful in dealing with the quantities of the rare alkalies found in rocks and minerals. The procedures are relatively rapid and based chiefly on the use of chloroplatinic acid, absolute alcohol and ether, and ammonium sulfate. The percentages of all the alkalies found in a number of minerals are given. application/pdf 10.1021/ac50092a023 en American Chemical Society Determination of the common and rare alkalies in mineral analysis article