Imogolite
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| Imogolite | |
|---|---|
| Lua error in package.lua at line 80: module 'Module:InfoboxImage/data' not found. Imogolite soil (brown) with fragments of transparent imogolite films | |
| General | |
| Category | Phyllosilicate minerals |
| Formula | Page Module:Chem2/styles.css has no content.Al2SiO3(OH)4 |
| IMA symbol | Imo[1] |
| Strunz classification | 9.ED.20 |
| Crystal system | Tetragonal Unknown space group |
| Identification | |
| Color | White, blue, green, brown, black |
| Crystal habit | Conchoidal to earthy masses of microscopic threadlike particles and bundles of fine tubes, each about 20 Å in diameter |
| Mohs scale hardness | 2–3 |
| Luster | Vitreous, resinous, waxy |
| Diaphaneity | Transparent to translucent |
| Specific gravity | 2.7 |
| Optical properties | Isotropic |
| Refractive index | n=1.47–1.51 |
| References | [2][3][4] |
Imogolite is an aluminium silicate clay mineral with the chemical formula Page Module:Chem2/styles.css has no content.Al2SiO3(OH)4. It occurs in soils formed from volcanic ash and was first described in 1962 for an occurrence in Uemura, Kumamoto prefecture, Kyushu Region, Japan.[2] Its name originates from the Japanese word Script error: No such module "lang"., which refers to the brownish yellow soil derived from volcanic ash. It occurs together with allophane, quartz, cristobalite, gibbsite, vermiculite and limonite.[3]
Imogolite consists of a network of nanotubes with an outer diameter of ca. 2 nm and an inner diameter of ca. 1 nm. The tube walls are formed by continuous Page Module:Chem2/styles.css has no content.Al(OH)3 (gibbsite) sheets and orthosilicate anions (Page Module:Chem2/styles.css has no content.O3SiOH groups). Owing to its tubular structure, natural availability, and low toxicity, imogolite has potential applications in polymer composites, fuel gas storage, absorbents, and as a catalyst support in chemical catalysis.[5]
References
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- ^ Page Module:Citation/CS1/styles.css has no content.Warr, L.N. (2021). "IMA–CNMNC approved mineral symbols". Mineralogical Magazine. 85 (3): 291–320. Bibcode:2021MinM...85..291W. doi:10.1180/mgm.2021.43. S2CID 235729616.
- ^ a b Page Module:Citation/CS1/styles.css has no content."Imogolite: Mineral information, data and localities". Mindat.org. Hudson Institute of Mineralogy. Retrieved 27 Jun 2019.
- ^ a b Page Module:Citation/CS1/styles.css has no content.Anthony JW, Bideaux RA, Bladh KW, et al., eds. (1995). "Imogolite" (PDF). Handbook of Mineralogy. Vol. II (Silica, Silicates). Chantilly, VA, US: Mineralogical Society of America. ISBN 9780962209710.
- ^ Page Module:Citation/CS1/styles.css has no content."Imogolite Mineral Data". Webmineral.com. Retrieved 27 Jun 2019.
- ^ Page Module:Citation/CS1/styles.css has no content.Yah WO, Yamamoto K, Jiravanichanun N, et al. (2010). "Imogolite Reinforced Nanocomposites: Multifaceted Green Materials". Materials. 3 (3): 1709–1745. Bibcode:2010Mate....3.1709Y. doi:10.3390/ma3031709. PMC 5445889.
Further reading
- Page Template:Sister-inline/styles.css has no content.Script error: No such module "Sister project logo". Media related to Script error: No such module "Commons link". at Wikimedia Commons
- Page Module:Citation/CS1/styles.css has no content.Wada K, Yoshinaga N (1969). "The structure of "Imogolite"" (PDF). Am. Mineral. 54: 50–71.
- Page Module:Citation/CS1/styles.css has no content.Gabriel JC, Davidson P (2003). "Mineral Liquid Crystals from Self-Assembly of Anisotropic Nanosystems" (PDF). Topics in Current Chemistry. 226: 126–127. doi:10.1007/b10827. Archived from the original (PDF) on 2011-07-26. (Contains structure illustration)
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