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Author Topic: I need help with the Identification of a rock I found  (Read 2187 times)

Offline fireangel

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I found this rock on the bank of a creek in Saint Louisville, Ohio. The rock is around 3 inches in length it is a metallic silver with streaks and stars of black throughout it and the brown you see all over it is a rust colored dirt that I cant seem to get cleaned off unless maybe it is rust I do not know. I find it to be different then some of the normal rocks I come across it kind of stuck out like a soar thumb. So it would be awesome if someone could help identify this  :)


 

Offline Airthumbs

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Re: I need help with the Identification of a rock I found
« Reply #1 on: 14/06/2012 18:21:35 »
I am no expert but it might be some kind of feldspar like an Amazonite?
 

Offline nicephotog

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Re: I need help with the Identification of a rock I found
« Reply #2 on: 15/06/2012 08:00:06 »
Does it smell in the tiniest like coal? I have seen rock mixtures and internet pics of coal rock mixtures but they are a little more obvious than that.
 

Offline Mazurka

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Re: I need help with the Identification of a rock I found
« Reply #3 on: 15/06/2012 10:36:52 »
First guess from the photo would be some sort of garnet mica schist.

It looks highly weathered from the outside (which would fit with rust streaks etc.).
If I were you I would break it in half with a hammer and post a picture of a fresh surface...
 

Offline Bass

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Re: I need help with the Identification of a rock I found
« Reply #4 on: 17/06/2012 06:04:00 »
Are the green and yellow coloring from weathering? That is, are they found only on the surface or do they go all the way through the rock?  How hard is the metallic mineral? Can you scratch it with a knife?  Do the blue spots exist, or are they created by the photo/flash?  If you scratch the metal on rough porcelain, what color is the streak?
 

Offline CliffordK

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Re: I need help with the Identification of a rock I found
« Reply #5 on: 17/06/2012 07:20:50 »
Could it be a type of granite?

I think of the basic black & white granite, but there is certainly a variety of granites that are used in counter tops.
 

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Re: I need help with the Identification of a rock I found
« Reply #5 on: 17/06/2012 07:20:50 »

 

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