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Can anyone help me identify this.
  
  Index -> FOR BEGINNERS: What is it? Where is it from?
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Steven




Joined: 11 Feb 2019
Posts: 1
Location: Missouri

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PostPosted: Feb 12, 2019 00:11    Post subject: Can anyone help me identify this.  

I found it while out rock hunting a few years ago found it at an abandoned mine. A lot of water used to run through the dike I was in. I found a lot of silver iron copper Kobalt magnesium oars also.


20190211_202514.jpg
 Mineral: Maybe Amber in a mtrix
 Locality:
Missouri, USA
 Dimensions: About 55cm by65cm
 Description:
SW missouri
Or maybe another fossil
 Viewed:  781 Time(s)

20190211_202514.jpg


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Kevin Schofield




Joined: 05 Jan 2018
Posts: 111
Location: Beacon NY

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PostPosted: Feb 12, 2019 09:59    Post subject: Re: Can anyone help me identify this.  

Steven wrote:
I found it while out rock hunting a few years ago found it at an abandoned mine. A lot of water used to run through the dike I was in. I found a lot of silver iron copper Kobalt magnesium oars also.


Hi Steven,

this looks as if it is an accumulation of mineral that is trying to be a stalagmite. You say there was a lot of running water, so guess it is likely that there was also dripping water from the roof to the floor of the adit/drift you were in. The best descriptor for this would probably then be a "dripstone" deposit formed as mineral-rich water dripping over a period of time onto one place gradually layed down layers of mineral to build a 3D deposit. Chemically it is almost certainly calcium carbonate, and mineralogically likely to be calcite, although aragonite (same composition, different crystal form) is also a possibility.

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