The oriented attachment mechanism in the formation of twins a survey
Authors: Nespolo, Massimo; Ferraris, Giovanni
Source: European Journal of Mineralogy, Volume 16, Number 3, 1 June 2004 , pp. 401-406(6)
Publisher: E. Schweizerbart'sche Verlagsbuchhandlung
Abstract:The direct and indirect evidences for the oriented attachment of pre-formed crystals as a mechanism of twin formation are reviewed and discussed. Although rarer than the nucleation-stage formation, this mechanism, often overlooked, has been demonstrated in laboratory experiments, with the artificial production of twins. Moreover, the role of the oriented attachment in the formation of natural twins, although more likely to occur in environments where crystals are free of moving and interacting, is supported also by the occurrence of monoperiodic twins and of plesiotwins, whose origin cannot be explained by a nucleation-stage formation. The so far observed absence of diperiodic twins is discussed in terms of two-dimensional site-coincidence and twin obliquity.
Document Type: Research article
Publication date: 2004-06-01
- The European Journal of Mineralogy publishes original papers, review articles and letters dealing with the mineralogical sciences s.l. These include primarily mineralogy, petrology, geochemistry, crystallography and ore deposits, as well as environmental, applied and technical mineralogy. Nevertheless, papers in any related field, including cultural heritage, will be considered.
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