Skip navigation
Skip navigation

Self-assembly in the growth of precious opal

Stewart, Andrew; Chadderton, Lewis; Senior, Brian


It is proposed that primary nucleation of amorphous microspherulites of hydrated silica in natural proto-precious-opal can be followed by a long range superlattice ordering process by means of electrostatic self-assembly. Necessary conditions in the thermodynamics are a high surface charge density on microspherulite surfaces, a long Debye length and an appropriate number density of nucleation centres. A further chemical requirement is a high alkaline environmental pH ∼9-10. It is also proposed...[Show more]

CollectionsANU Research Publications
Date published: 2009
Type: Journal article
Source: Journal of Crystal Growth
DOI: 10.1016/j.jcrysgro.2009.09.042


File Description SizeFormat Image
01_Stewart_Self-assembly_in_the_growth_of_2009.pdf636.96 kBAdobe PDF    Request a copy
02_Stewart_Self-assembly_in_the_growth_of_2009.pdf504.51 kBAdobe PDF    Request a copy

Items in Open Research are protected by copyright, with all rights reserved, unless otherwise indicated.

Updated:  19 May 2020/ Responsible Officer:  University Librarian/ Page Contact:  Library Systems & Web Coordinator