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22 Sep-17:04:03 The mizunaka collection - fluorite (Am Mizunaka)
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22 Sep-09:12:01 Re: a mineralogical trip through the states of usa - indiana (R Saunders)
22 Sep-08:22:04 Re: collection of david carter (David916)
22 Sep-04:50:48 Re: very nice amethyst in the railroad works in north of spain (Heat)
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22 Sep-03:22:44 Re: very nice amethyst in the railroad works in north of spain (Hans Cremers)
22 Sep-03:11:53 Re: quartz and epidote with possible hedenbergite from imilchil, morocco (Sante Celiberti)
21 Sep-16:58:02 Quartz and epidote with possible hedenbergite from imilchil, morocco (Adam)
21 Sep-14:00:15 Re: very nice amethyst in the railroad works in north of spain (James Catmur)
21 Sep-13:57:11 Re: very nice amethyst in the railroad works in north of spain (James Catmur)
21 Sep-12:37:41 Re: very nice amethyst in the railroad works in north of spain (Heat)
21 Sep-09:15:23 Re: very nice amethyst in the railroad works in north of spain (Hans Cremers)
21 Sep-08:00:37 Re: very nice amethyst in the railroad works in north of spain (James Catmur)
21 Sep-07:40:10 Re: very nice amethyst in the railroad works in north of spain (Hans Cremers)
20 Sep-15:56:59 Re: collection of sante celiberti (Sante Celiberti)
20 Sep-14:58:07 Re: collection of sante celiberti (Bergur_e_sigurdarson)
20 Sep-14:21:07 Re: collection of sante celiberti (Sante Celiberti)
20 Sep-10:43:50 Re: very nice amethyst in the railroad works in north of spain (James Catmur)

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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.
Bloomington Nodule
  
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MadeeMac




Joined: 18 Apr 2021
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Location: Indiana

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PostPosted: Apr 19, 2021 07:10    Post subject: Bloomington Nodule  
I cracked open a few Geodes(and nodules) collected near Bloomington Indiana. Any ideas on what this one might be? It is metallic and fibrous.

F4057618-BCF5-4BFF-9524-47CA50C77FD7.jpeg
 Mineral: Unknown nodule
 Locality:
Monroe County, Indiana, USA
 Dimensions: 8x7cm
 Description:
Chalcopyrite perhaps?
 Viewed:  705 Time(s)

F4057618-BCF5-4BFF-9524-47CA50C77FD7.jpeg
699F715B-8FB4-4F4B-8163-13E881A1DD65.jpeg
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 Viewed:  697 Time(s)

699F715B-8FB4-4F4B-8163-13E881A1DD65.jpeg
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B.




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PostPosted: Apr 19, 2021 07:34    Post subject: Re: Bloomington Nodule  
A typical solid Indiana geode, long ago weathered out of the surrounding limestone host rock.
The white is druzy quartz, the center cavity is not metallic, but weathering/corroding calcite.
To check, put some vinegar or, better yet, muriatic acid on it. With the acid it should fizz.

On this website go to "A mineralogical trip thru the states of the USA" Go to "Indiana" There you will see many examples of geode finds from Monroe County. BOB
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MadeeMac




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PostPosted: Apr 19, 2021 08:04    Post subject: Re: Bloomington Nodule  
Thank you for the information!!!’
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