SUBSTITUTION OF ALUMINUM BY IRON IN ALLOPHANE

YASUO KITAGAWA
1973 Clay Science  
The electron spin resonance (ESR) spectra of two samples of allophane suggested that ferric ion substituted partly for aluminum ion in its structure, and that the ferric ion was located in a poorly crystalline environment. Allophane may not be perfectly amorphous, but of poorly crystalline form.
doi:10.11362/jcssjclayscience1960.4.151 fatcat:4gqoypwubndzhf4iwomub46sni