1950/09/01 by Julian R. Goldsmith · 2 citations
Agricultural and Biological Sciences · Chemistry · Energy · Materials Science · #Chemistry #Clay minerals and soil interactions #Crystal (programming language) #Crystal structure #Crystallography #Feldspar #Gallium #Geology #Germanium #Iron oxide chemistry and applications #Isostructural #Materials science #Metallurgy #Mineral #Mineralogy #Quartz #Silicon #Silicon Effects in Agriculture
paper · doi:10.1086/625760
openalex publication_date 1950/09/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/23
Compounds of gallium and germanium isostructural with the feldspars have been prepared, and some of their crystal-chemical properties are here described. In the Na and K feldspars, Al+++ and Si++++ can be completely replaced by Ga+++ and Ge++++; but, in pure Ca feldspar, complete substitutions cannot be made. The use of these substitutions as a means of obtaining information on the feldspars is discussed. One of the principal aims of this line of investigation is to obtain information on substitutional disorder in alumino-silicates. It is difficult to locate specific positions of Al and Si atoms in many silicates because of the approximately equivalent X-ray scattering power of these two atoms. The use of a heavier-element replacement should produce more definite information on the degree of substitutional disorder, and it is hoped that these Ga and Ge feldspars will help in the interpretation of some of the problems of the natural minerals.