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Allophane in New Zealand - a review

1990; CSIRO Publishing; Volume: 28; Issue: 3 Linguagem: Inglês

10.1071/sr9900343

1838-675X

R. L. Parfitt,

Heavy metals in environment

Studies of allophanes from New Zealand are reviewed, and a definition of the allophane group of minerals is suggested. Three types of allophane are identified, and their structures are discussed under headings Al-rich soil allophanes, Si-rich soil allophanes and stream deposit allophanes. Examples from New Zealand soils and tephras are discussed in relation to properties, identification and weathering processes.