单词 | montmorillonite group |
释义 | > as lemmasmontmorillonite group montmorillonite group n. the group of clay minerals (of which montmorillonite is the type) comprising the montmorillonoids (now more often called smectite group). ΘΚΠ the world > the earth > minerals > types of mineral > silicates > phyllosilicate > [noun] > smectites montmorillonite group1938 montmorillonoid1951 smectite1955 1938 Mineral. Mag. 25 153 The montmorillonite group is shown to have three end-members, montmorillonite, Al2Si4O11, nontronite, Fe2Si4O11, magnesium-beidellite, Mg3Si4O11. 1966 W. A. Deer et al. Introd. Rock-forming Minerals iii. 264 Chemical variation of this basic formula yields a group of clay minerals which are related by a common structure..and are therefore classed as the ‘montmorillonite group’. < as lemmas |
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