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Characteristics of halloysite associated with rectorite from Hubei, China

H. L. Hong and J. X. Mi
Characteristics of halloysite associated with rectorite from Hubei, China
Mineralogical Magazine (June 2006) 70 (3): 257-264


The mineralogical characteristics of halloysite in rectorite pelite in the Zhongxiang area, Hubei, China, were investigated using X-ray diffraction, scanning electron microscopy and high-resolution transmission electron microscopy methods. The results show that halloysite crystals exhibit euhedral lamellar, tubular or club-like, and needle-like or fibre-like morphologies, indicating that they crystallized from a significantly water-saturated environment. The mineral assemblage of the rectorite pelite is rectorite, halloysite, illite, gypsum, pyrite and rutile, suggesting a weak supergene alteration. Several features related to crystallization of halloysite were noted. Growth of halloysite on rectorite edge surfaces in voids and twins of halloysite on a nanometer scale with composition plane (110) were found in the Zhongxiang rectorite pelite, and, in particular, the tapered ends of tubes suggest that halloysite crystallized from solution. Disaggregation of lamellar halloysite particles into parallel clusters of single tubular halloysite crystals suggests that because of significant [H (sub 2) O] activity in the environment, halloysite may have been derived from the alteration of rectorite.

ISSN: 0026-461X
EISSN: 1471-8022
Serial Title: Mineralogical Magazine
Serial Volume: 70
Serial Issue: 3
Title: Characteristics of halloysite associated with rectorite from Hubei, China
Affiliation: China University of Geosciences, Faculty of Earth Sciences, Wuhan, China
Pages: 257-264
Published: 200606
Text Language: English
Publisher: Mineralogical Society, London, United Kingdom
References: 20
Accession Number: 2006-081621
Categories: Mineralogy of silicates
Document Type: Serial
Bibliographic Level: Analytic
Illustration Description: illus. incl. sketch map
N29°00'00" - N33°19'60", E108°30'00" - E116°00'00"
Secondary Affiliation: Xiamen University, CHN, China
Country of Publication: United Kingdom
Secondary Affiliation: GeoRef, Copyright 2017, American Geosciences Institute. Abstract, Copyright, Mineralogical Society of Great Britain and Ireland. Reference includes data from GeoScienceWorld, Alexandria, VA, United States
Update Code: 200646
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