<p>The green material indicates the potential presence of copper &amp; the shiny bits on the lower left &amp; mid right of the specimen look metallic, but that could be just glint in the picture.</p>

<p>Also, there are two groves on the lower right which may indicate a soft metal like copper.</p>

<p>If it is metallic it could be native copper or it could be lump of copper from a foundry.</p>

CC BY-SA 3.0
2016-02-22T17:30:50.187Z
The two indentations on the right were created by a shovel perhaps, So it would have to be a soft metal and when copper ionizes it will look turquoise in color similar to this sample.So I agree with Fred, Copper. But these are only guesses, follow the link Artexabelta posted so a more persice answer will be generated.
user5434678
CC BY-SA 3.0
2016-02-21T08:08:20.403Z
2016-02-21T08:08:20.403Z
Fred
<p>My grandfather found this thing.
<a href="https://i.sstatic.net/u59pr.jpg" rel="nofollow noreferrer"><img src="https://i.sstatic.net/u59pr.jpg" alt="enter image description here"></a></p>

CC BY-SA 3.0
2016-02-21T05:52:35.780Z
Welcome to Earth Science StackExchange! Please follow the directions in: http://meta.earthscience.stackexchange.com/questions/124/a-guide-for-asking-identify-this-rock-questions to improve the quality of your question and also improve the chances of it getting answered.
arkaia
CC BY-SA 3.0
2016-02-21T07:41:06.270Z
Voting to close for now, but will gladly vote to re-open if the requested details are added.
Semidiurnal Simon
CC BY-SA 3.0
2016-02-21T21:43:18.583Z
Might be an eclogite (red being garnet and green being omphacite)
Gimelist
<rocks><mineralogy><minerals>
What type of mineral is this?
user5503
# What type of mineral is this?

(Asked by: username_0 on 2016-02-21)

My grandfather found this thing.
[![enter image description here](https://i.sstatic.net/u59pr.jpg)](https://i.sstatic.net/u59pr.jpg)

**Tags:** rocks, mineralogy, minerals

> **Comments:**
> **username_1**: Welcome to Earth Science StackExchange! Please follow the directions in: http://meta.earthscience.stackexchange.com/questions/124/a-guide-for-asking-identify-this-rock-questions to improve the quality of your question and also improve the chances of it getting answered.  
> **username_2**: Voting to close for now, but will gladly vote to re-open if the requested details are added.  
> **username_3**: Might be an eclogite (red being garnet and green being omphacite)  

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## 1 answers

### Answer by username_4 on 2016-02-21. Score: 1

The green material indicates the potential presence of copper & the shiny bits on the lower left & mid right of the specimen look metallic, but that could be just glint in the picture.

Also, there are two groves on the lower right which may indicate a soft metal like copper.

If it is metallic it could be native copper or it could be lump of copper from a foundry.

> **Comments:**
> **username_5**: The two indentations on the right were created by a shovel perhaps, So it would have to be a soft metal and when copper ionizes it will look turquoise in color similar to this sample.So I agree with username_4, Copper. But these are only guesses, follow the link Artexabelta posted so a more persice answer will be generated.  

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