<p>Found this in a river. The dark part is the rock still drying out. I think the smoothness is the weathering from the river. The rock is heavy and a little bit rough on the underside among the smoothness. I noticed it because it set my metal detecting pin pointer off and it is magnetic. Not sure what the brown/orange stuff is. Hardness is defo 5.5 as it scratches glass. </p>

<p>Found in a carboniferous zone and other deposits nearby are quartz and limestone.</p>

<p><a href="https://i.sstatic.net/3XweD.jpg" rel="nofollow noreferrer"><img src="https://i.sstatic.net/3XweD.jpg" alt="enter image description here"></a></p>

CC BY-SA 4.0
2018-08-28T20:52:59.590Z
Thanks for that and you are correct I mistyped should have been metallic as magents are attracted to it - thanks for the answer  :)
D Beattie
<geology>
Rock ID: Dark, Hard, Midland Valley Scotland
D Beattie
# Rock ID: Dark, Hard, Midland Valley Scotland

(Asked by: username_0 on 2018-08-27)

Found this in a river. The dark part is the rock still drying out. I think the smoothness is the weathering from the river. The rock is heavy and a little bit rough on the underside among the smoothness. I noticed it because it set my metal detecting pin pointer off and it is magnetic. Not sure what the brown/orange stuff is. Hardness is defo 5.5 as it scratches glass.

Found in a carboniferous zone and other deposits nearby are quartz and limestone.

[![enter image description here](https://i.sstatic.net/3XweD.jpg)](https://i.sstatic.net/3XweD.jpg)

**Tags:** geology

> **Comments:**
> **username_0**: Thanks for that and you are correct I mistyped should have been metallic as magents are attracted to it - thanks for the answer  :)  

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