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Interaction between Alkali-Halides and Halloysite: I.R. Study of the Interaction between Alkali-Halides and Hydrated Halloysite
Alkali-Halides Halloysite Alkali-Halides Hydrated Halloysite
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2012/2/13
Halloysite was mechanically ground in the presence of NaCl, KCl, RbCl, RbCl and CsCl, and i.r. spectra were recorded after various periods of grinding, up to 10 min. Changes in the wave-numbers and sh...
Halloysite-Kaolinite Transformation at Room Temperature
Halloysite-Kaolinite Transformation Room Temperature
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2012/2/13
Halloysite (metahalloysite) of various particle sizes has been altered with oxalic and EDTA acids, at room temperature and during different periods of time (5–90 days). The oxalic acid attack at first...
Internal and External Morphology of Tubular and Spheroidal Halloysite Particles
External Morphology of Tubular Spheroidal Halloysite Particles
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2011/11/18
Abstract: Tubular halloysite from Wagon Wheel Gap, Colorado and spheroidal halloysite from Redwood County, Minnesota were examined by transmission electron microscopy. Clay samples were prepared by th...
The Relationship between the Hydrated and Dehydrated States of an Halloysite
Hydrated Dehydrated States Halloysite Relationship
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2012/2/17
A study of the mineralogical changes taking place during the loss of interlayer water in an halloysite has been carried out in order to clarify the relationship between the most hydrated and least hyd...
Halloysite Deposits in the Terraced Hills Washoe County, Nevada
Halloysite Deposits Hills Washoe County
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2012/2/20
Large hydrothermal deposits of halloysite clay occur in the Terraced Hills, Washoe County, Nevada and similar bodies probably are present elsewhere in the Basin and Range province. The host rock, an a...
Formation of Halloysite from Feldspar: Low Temperature, Artificial Weathering Versus Natural Weathering
Formation of Halloysite Feldspar Low Temperature
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2011/11/17
Abstract: Weathering products formed on surfaces of both potassium and plagioclase feldspar (An70), which were continuously leached in a Soxhlet extraction apparatus for 140 days with 7·21 of distille...
Formation of Zeolite Type A from Halloysite and Allophane
Formation of Zeolite Type A Halloysite Allophane
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2011/11/16
It is well known that kaolinite and halloysite change into hydroxy sodalite by treatment with sodium hydroxide. It is also known that sodium zeolite type A can be formed from kaolinite, after it has b...