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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.
Found in Iowa please identify
  
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Leone1986




Joined: 01 Aug 2020
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PostPosted: Aug 04, 2020 12:13    Post subject: Found in Iowa please identify  
Found the large tan and blue with crystals barely showing in a farm field and the iron like non magnetic one in clay and sand area by a river but up top of bluff area which is all sand and clay also in Iowa

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James Catmur
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PostPosted: Aug 04, 2020 15:37    Post subject: Re: Found in Iowa please identify  
Might be (but you need to do tests to be certain [hardness and streak])

https://www.mineral-forum.com/message-board/viewtopic.php?p=19487#19487

Calcite in a septarian nodule for the first?

Goethite after pyrite for the second
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Firmo Espinar




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PostPosted: Aug 04, 2020 15:56    Post subject: Re: Found in Iowa please identify  
Hi Leone.

Welcome to FMF.

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The last two pics seem to be some kind of microcrystalline quartz, chert or agate.

Iowa is very large. A more limited geographic position would also help.

Thank you.
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