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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.
A mineralogical trip through the states of USA - Illinois
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Tobi
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PostPosted: Oct 22, 2017 16:44    Post subject: Re: A mineralogical trip through the states of USA - Illinois  
Turbo wrote:
A pair of specimens from Denton Mine both displaying similar habits but on different matrices. The specimen on the left is on limestone and the one on the right is on fluorite. I was very happy bring this pair together in my calcite collection!
A great pair!
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Tobi
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PostPosted: Apr 15, 2018 10:37    Post subject: Re: A mineralogical trip through the states of USA - Illinois  
Speaking of Denton Mine, I discovered this one in the Marburg Museum yesterday:

IMG_1603.JPG
 Mineral: Fluorite, Sphalerite
 Locality:
Denton Mine, Goose Creek Mine group, Harris Creek Sub-District, Hardin County, Illinois, USA
 Dimensions: Specimen size 22 cm
 Description:
Collection Mineralogical Museum Marburg (my photo)
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IMG_1603.JPG
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Bob Harman




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PostPosted: Oct 12, 2019 18:49    Post subject: Re: A mineralogical trip through the states of USA - Illinois  
These peculiar crystal groupings of jackstraw calcites were collected from the dumps of the fluorite processing center in Rosiclaire Illinois in April 2005.
At that time, shortly after the last Harris Creek Mining District mines had closed, some decent specimens could still be collected.

fullsizeoutput_29e4.jpeg
 Mineral: Calcite
 Locality:
Harris Creek Sub-District, Hardin County, Illinois, USA
 Dimensions: See ruler
 Description:
Self-collected April 2005
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