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Opals: characterization, nomenclature definition and proposal of a new varieties classification following the discovery of new materials in Peru
nomenclature definition new materials Peru varieties classification
2011/11/8
This work has been carried out on a vast amount of samples (more than 500). In this summary I will concentrate on some of the analytical methods used on the characterization of 25 out of the Andean co...
This review of the literature shows that there have been many attempts to modify or revise the original definition of halloysites as distinguished from kaolinites, which was based on the greater water...