Rapid analysis of silicate, carbonate, and phosphate rocks
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Bulletin↗
Geology topics
Walter Wallace Brannock
Publications and source records attributed to Walter Wallace Brannock.
A field method for the determination of calcium and magnesium in limestone and dolomite
The method is an adaptation of a procedure described by Betz and Noll 1 in 1950. Calcium and magnesium are determined by visual titration using Versene (disodium ethylenediamine tetraacetate) with Murexide (ammonium purpurate) as the indicator for calcium and Eriochrome Black T as the indicator for magnesium.
Open-File Report↗
Rapid analysis of silicate rocks
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Bulletin↗
A field method for the determination of titanium in rocks
About 4 mg of rock powder measured with a scoop is fused with potassium bisulfate in a test tube. Tiron is added to the cool melt and the mixture is dissolved in a buffer solution. Sodium dithionite is added and the approximate concentration of TiO 2 is determined by comparing the resulting yellow solution with permanent standards, which are simple to prepare.The results obtained by this field method for TiO 2 on 72 rock samples of various types are compared with those obtained by laboratory methods.
Economic Geology↗
Contributions to geochemistry, 1949
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Bulletin↗
Rapid analysis of silicate rocks
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Circular↗