Atomic force microscopy study of hydrothermal illite in Izumiyama pottery stone from arita, Saga Prefecture, Japan

Research output: Contribution to journalArticle

12 Citations (Scopus)

Abstract

The surface microtopographic observations and analyses of Izumiyama hydrothermal illite particles were made by utilizing tapping-mode atomic force microscopy (TMAFM). The Izumiyama illite particles showed platy to lath shapes. Platy particles exhibited various spiral growth patterns, i.e. circular, malformed circular, or polygonal single unit-cell layer spirals, polygonal parallel step spiral, or interlaced spiral patterns. The polygonal parallel step spiral and interlaced spiral patterns are formed by two single unit-cell layers rotated by 180° and 120° arising from a single screw dislocation point, respectively. The spiral patterns indicate that the illite particles have 1M, 20 and 2M, polytypes. Lath-shaped particles show only interlacing patterns supporting the formation of 2M, structures. Particles showing circular or malformed circular spirals were found to be thinner and to have narrower step separations than particles showing polygonal spirals. Polygonal platy and lath-shaped particles showing interlaced patterns tended to be thicker and to have wider step separations than the other polygonal platy particles. These results suggest that the Izumiyama illites crystallize as the result of a mechanism involving solution-mediated polytypes and spiral-type transformations of illite. The mechanism involves the Ostwald ripening process, i.e. a transformation of the polytype and spiral shape. The sequence of crystallization of the Izumiyama illite is: 1M circular spirals → 1M. 20 polygonal spirals → 2M1 polygonal spirals occuring during crystal growth and sequentially overgrowing on the initial particle surfaces. The super-saturation of the hydrothermal solution probably decreases gradually during the transformation, and this decrease may cause not only the transformation from a circular to a polygonal crystal morphology but also the development of a lath habit due to the inhibition of the growth rate in the [010] direction of the particle.

Original languageEnglish
Pages (from-to)300-309
Number of pages10
JournalClays and Clay Minerals
Volume49
Issue number4
DOIs
Publication statusPublished - Jan 1 2001

Fingerprint

atomic force microscopy
illite
Atomic force microscopy
Japan
Crystallization
Cells
Ostwald ripening
Screw dislocations
Supersaturation
crystals
particle
stone
crystal
Crystals
ripening
supersaturation
crystallization
screws
dislocation
growth retardation

All Science Journal Classification (ASJC) codes

  • Water Science and Technology
  • Soil Science
  • Geochemistry and Petrology
  • Earth and Planetary Sciences (miscellaneous)

Cite this

Atomic force microscopy study of hydrothermal illite in Izumiyama pottery stone from arita, Saga Prefecture, Japan. / Kuwahara, Yoshihiro; Uehara, Seiichiro; Aoki, Yoshikazu.

In: Clays and Clay Minerals, Vol. 49, No. 4, 01.01.2001, p. 300-309.

Research output: Contribution to journalArticle

@article{4fbb0a50d9f647b480b73ca5921a826a,
title = "Atomic force microscopy study of hydrothermal illite in Izumiyama pottery stone from arita, Saga Prefecture, Japan",
abstract = "The surface microtopographic observations and analyses of Izumiyama hydrothermal illite particles were made by utilizing tapping-mode atomic force microscopy (TMAFM). The Izumiyama illite particles showed platy to lath shapes. Platy particles exhibited various spiral growth patterns, i.e. circular, malformed circular, or polygonal single unit-cell layer spirals, polygonal parallel step spiral, or interlaced spiral patterns. The polygonal parallel step spiral and interlaced spiral patterns are formed by two single unit-cell layers rotated by 180° and 120° arising from a single screw dislocation point, respectively. The spiral patterns indicate that the illite particles have 1M, 20 and 2M, polytypes. Lath-shaped particles show only interlacing patterns supporting the formation of 2M, structures. Particles showing circular or malformed circular spirals were found to be thinner and to have narrower step separations than particles showing polygonal spirals. Polygonal platy and lath-shaped particles showing interlaced patterns tended to be thicker and to have wider step separations than the other polygonal platy particles. These results suggest that the Izumiyama illites crystallize as the result of a mechanism involving solution-mediated polytypes and spiral-type transformations of illite. The mechanism involves the Ostwald ripening process, i.e. a transformation of the polytype and spiral shape. The sequence of crystallization of the Izumiyama illite is: 1M circular spirals → 1M. 20 polygonal spirals → 2M1 polygonal spirals occuring during crystal growth and sequentially overgrowing on the initial particle surfaces. The super-saturation of the hydrothermal solution probably decreases gradually during the transformation, and this decrease may cause not only the transformation from a circular to a polygonal crystal morphology but also the development of a lath habit due to the inhibition of the growth rate in the [010] direction of the particle.",
author = "Yoshihiro Kuwahara and Seiichiro Uehara and Yoshikazu Aoki",
year = "2001",
month = "1",
day = "1",
doi = "10.1346/CCMN.2001.0490404",
language = "English",
volume = "49",
pages = "300--309",
journal = "Clays and Clay Minerals",
issn = "0009-8604",
publisher = "Clay Minerals Society",
number = "4",

}

TY - JOUR

T1 - Atomic force microscopy study of hydrothermal illite in Izumiyama pottery stone from arita, Saga Prefecture, Japan

AU - Kuwahara, Yoshihiro

AU - Uehara, Seiichiro

AU - Aoki, Yoshikazu

PY - 2001/1/1

Y1 - 2001/1/1

N2 - The surface microtopographic observations and analyses of Izumiyama hydrothermal illite particles were made by utilizing tapping-mode atomic force microscopy (TMAFM). The Izumiyama illite particles showed platy to lath shapes. Platy particles exhibited various spiral growth patterns, i.e. circular, malformed circular, or polygonal single unit-cell layer spirals, polygonal parallel step spiral, or interlaced spiral patterns. The polygonal parallel step spiral and interlaced spiral patterns are formed by two single unit-cell layers rotated by 180° and 120° arising from a single screw dislocation point, respectively. The spiral patterns indicate that the illite particles have 1M, 20 and 2M, polytypes. Lath-shaped particles show only interlacing patterns supporting the formation of 2M, structures. Particles showing circular or malformed circular spirals were found to be thinner and to have narrower step separations than particles showing polygonal spirals. Polygonal platy and lath-shaped particles showing interlaced patterns tended to be thicker and to have wider step separations than the other polygonal platy particles. These results suggest that the Izumiyama illites crystallize as the result of a mechanism involving solution-mediated polytypes and spiral-type transformations of illite. The mechanism involves the Ostwald ripening process, i.e. a transformation of the polytype and spiral shape. The sequence of crystallization of the Izumiyama illite is: 1M circular spirals → 1M. 20 polygonal spirals → 2M1 polygonal spirals occuring during crystal growth and sequentially overgrowing on the initial particle surfaces. The super-saturation of the hydrothermal solution probably decreases gradually during the transformation, and this decrease may cause not only the transformation from a circular to a polygonal crystal morphology but also the development of a lath habit due to the inhibition of the growth rate in the [010] direction of the particle.

AB - The surface microtopographic observations and analyses of Izumiyama hydrothermal illite particles were made by utilizing tapping-mode atomic force microscopy (TMAFM). The Izumiyama illite particles showed platy to lath shapes. Platy particles exhibited various spiral growth patterns, i.e. circular, malformed circular, or polygonal single unit-cell layer spirals, polygonal parallel step spiral, or interlaced spiral patterns. The polygonal parallel step spiral and interlaced spiral patterns are formed by two single unit-cell layers rotated by 180° and 120° arising from a single screw dislocation point, respectively. The spiral patterns indicate that the illite particles have 1M, 20 and 2M, polytypes. Lath-shaped particles show only interlacing patterns supporting the formation of 2M, structures. Particles showing circular or malformed circular spirals were found to be thinner and to have narrower step separations than particles showing polygonal spirals. Polygonal platy and lath-shaped particles showing interlaced patterns tended to be thicker and to have wider step separations than the other polygonal platy particles. These results suggest that the Izumiyama illites crystallize as the result of a mechanism involving solution-mediated polytypes and spiral-type transformations of illite. The mechanism involves the Ostwald ripening process, i.e. a transformation of the polytype and spiral shape. The sequence of crystallization of the Izumiyama illite is: 1M circular spirals → 1M. 20 polygonal spirals → 2M1 polygonal spirals occuring during crystal growth and sequentially overgrowing on the initial particle surfaces. The super-saturation of the hydrothermal solution probably decreases gradually during the transformation, and this decrease may cause not only the transformation from a circular to a polygonal crystal morphology but also the development of a lath habit due to the inhibition of the growth rate in the [010] direction of the particle.

UR - http://www.scopus.com/inward/record.url?scp=0035437123&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0035437123&partnerID=8YFLogxK

U2 - 10.1346/CCMN.2001.0490404

DO - 10.1346/CCMN.2001.0490404

M3 - Article

AN - SCOPUS:0035437123

VL - 49

SP - 300

EP - 309

JO - Clays and Clay Minerals

JF - Clays and Clay Minerals

SN - 0009-8604

IS - 4

ER -