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A general guide for using the Forum with some rules and tips
The information provided within this Forum about localities is only given to allow reference to them. Any visit to any of the localities requires you to obtain full permission and relevant information prior to your visit. FMF is strictly against any illicit activities related to collecting minerals.
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| Search found 2 matches |
| Author | Message |
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 Topic: Seeking perlite expertise |
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| Joseph Taggart Replies: 23 Views: 43871 |
 Forum: Minerals and Mineralogy Posted: May 12, 2012 03:46 Subject: Re: Seeking perlite expertise |
| Perlite is a volcanic glass that has absorbed moisture over geologic time. Until it is popped it is not light and does not float on water. The final popped product requires
" ...an expansion ... |
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| Topic: Photos of epitaxy - (16) |
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| Joseph Taggart Replies: 55 Views: 182482 |
Forum: Featured Columns of FMF Posted: Jan 05, 2009 01:36 Subject: Re: Photos of epitaxy - (16) |
| This is my contribution of photographs of a specimen demonstrating epitaxy.
The specimen shown is two crystals of sphalerite with an epitaxially controlled coating of chalcopyrite crystals from Jop ... |
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