Definition of vermiculite in English:
A yellow or brown mineral found as an alteration product of mica and other minerals, and used for insulation or as a moisture-retentive medium for growing plants.
- Clay minerals are mainly illite and chlorite, with only traces of smectite, vermiculite and kaolinite.
- The deposit was interpreted to have formed by the replacement of biotite by vermiculite under the influence of pegmatitic fluids.
- These soil mixtures should include sand, peat moss, perlite, vermiculite, and fir bark for adequate drainage.
Definition of vermiculite in:
- British & World English dictionary
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