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A general guide for using the Forum with some rules and tips
Found in Iowa please identify
  
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Leone1986




Joined: 01 Aug 2020
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Location: Iowa

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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.

You may also read and use:

A general guide for using the Forum with some rules and tips


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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