Halloysite
Miscellaneous
- Family: None
- Region: None
- Mined At: Unspecified
- Raw Mineral: Yes
- Generic: Yes
Notes
(Richard Willis)
A clay-making mineral of the group kaolin-serpentine (kaolinite, lizardite, chrysolite), of the ideal form Al4[(OH)8Si4O10] (H2O)4 with a typical empirical analysis of Al2O3 34.7%, SiO2 40.8%, H<
SUB>2O 24.5% & traces of Fe, Cr, Mg, Ni, Cu
Hardness: 1-2 Density: 2-2.2 Soluble in HCl
Popular hydrous alumina-silicate, having similarities to both montmorillonite and kaolinite. Common to natural deposits of many types of clays.
URLs
- WebMineral Information - http://webmineral.com/data/Halloysite.shtml
- Sprectral Plot - http://speclab.cr.usgs.gov/spectral.lib04/spectral-lib.desc+plots.html
Authors
- Tony Hansen (Owner)
XML
<?xml version="1.0" encoding="UTF-8"?>
<material name="Halloysite" descrip="" generic="1" rawmineral="1" searchkey="" loi="0.00">
<notes>
<note>A clay-making mineral of the group <B><I>kaolin-serpentine</I></B> (kaolinite, lizardite, chrysolite), of the ideal form Al<FONT SIZE=2><SUB>4</SUB></FONT>[(OH)<FONT SIZE=2><SUB>8</SUB></FONT>Si<FONT SIZE=2><SUB>4</SUB></FONT>O<FONT SIZE=2><SUB>10</SUB></FONT>] (H<FONT SIZE=2><SUB>2</SUB></FONT>O)<FONT SIZE=2><SUB>4</SUB></FONT><SUB> </SUB>with a typical empirical analysis of Al<FONT SIZE=2><SUB>2</SUB></FONT>O<FONT SIZE=2><SUB>3</SUB></FONT> 34.7%, SiO<FONT SIZE=2><SUB>2</SUB></FONT> 40.8%, H<FONT SIZE=2><
SUB>2</SUB></FONT>O 24.5% &amp; traces of Fe, Cr, Mg, Ni, Cu<BR>
Hardness: 1-2 Density: 2-2.2 Soluble in HCl<BR>
Popular hydrous alumina-silicate, having similarities to both montmorillonite and kaolinite. Common to natural deposits of many types of clays.<BR>
</note>
</notes>
</material>
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