Transformation energetically distinguishable

The structure of nacrite has been reinvestigated by Zheng and Bailey (1994), and recently refined by Mercier and Le Page (2008). The latter authors found a complicated polytypic pattern of 36 transformations between adjacent kaoUnite layers, 20 of which are energetically distinguishable transformations (EDTs) and 16 enantiomorphic transitions (EDT ). Kaohnite and dickite are lowest-energy models at zero temperature and pressure, whereas nacrite is the lowest-enthalpy model under moderate pressure. 

One of his most distinguished colleagues characterized Fieser as a man of extraordinary zeal, whose powerful and energetic constitution allowed him to transform that zeal into action. Not only was his colorful presence a feature of the Harvard scene for decades, but his influence through books and scientific contributions remains worldwide. 

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