Story: Soils

Soil texture

Soil texture

Clay particles are about 1,000 times smaller than sand particles (A). Clays have many forms. For example, kaolinite has book-like leaves (B), halloysite is made of balls (C), and (D) shows grains of quartz bound by lattices of iron oxide in the iron pan of a podzol. The shape of clay particles can only be seen by using a powerful scanning electron microscope.

Using this item

Massey University
Reference: Les Molloy, Soils in the New Zealand landscape: the living mantle. Lincoln: New Zealand Society of Soil Science, 1988, plates 1.3, 1.4

© New Zealand Society of Soil Science

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Me pēnei te tohu i te whārangi:

Allan Hewitt, 'Soils - Soil features', Te Ara - the Encyclopedia of New Zealand, http://www.TeAra.govt.nz/mi/photograph/12281/soil-texture (accessed 26 March 2019)

Story by Allan Hewitt, published 24 Sep 2007