MINERALS INDEX
Halloysite |
| H4Al2Si2O9.H2O |
| Amorphous |
Halloysite has not been found in the district as a distinct mineral but is believed to be a principal constituent of the harsh yellow clay, rich in zinc, that was called "vanuxemite" by Shepard (110). Cross (113) showed that the vanuxemite has the composition of a mixture of equal parts of calamine and halloysite. It appears to be analogous to the "tallow clay" of the Joplin mining district, Montana.
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© by Herb Yeates 1997-2006.
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page created: August 12, 2006 6:21 PM
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