Is this rock interesting , ?

[Amateur-Hunter-2021]

I found this rock in the mountains in Ireland and I was wondering if anybody has seen material like this elsewhere ? Is it Quartz ? And , what colour do you think it is ? I'm a newbie , so thanks

 

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[Indian Steve]

I can't help with the ID but I sure would have brought it home with me. Cool Rock!

 

[Garscale]

Context is important. If it was found on a native site, itmay be a blade core . If found in a parking lot with crushed rock...not as likely.

 

[Amateur-Hunter-2021]

Context was as follows , the image above shows a boulder of probably 1/2 Ton , surrounded by other boulders of 1 , 2 , etc Ton. On the side of one looking quite like this was a relatively thin layer of the rock in question above in the six photos. The rocks were mined in the mountains over 100 years ago. This layer did look unusual , I did not see any more on the sides of other boulders , of which I looked at hundreds. So, yes , I thought I better take some with me, I took out the chisel and hammer and got some.

On the left side of this photo is a concrete footpath.

 

[TreasureCatto]

I found this rock in the mountains in Ireland and I was wondering if anybody has seen material like this elsewhere ? Is it Quartz ? And , what colour do you think it is ? I'm a newbie , so thanks

View attachment 1918316

That is grey Chert. Composed of mainly microcrystalline quartz. Fairly common in the central U.S.

Welcome from Texas USA

 

[smokeythecat]

Yes, I agree with a grey chert. Not too common here in Maryland. Our geology is wrong for it to occur nearby.

 

[ToddsPoint]

Chert. A sedimentary rock which is limestone related. Gary

 

[Muddywaters]

Agreed looks like chert or Flint. One piece did looks like it might have a little pyrite in it

 

[Amateur-Hunter-2021]

Thanks everybody. Lost my login details. Found them again!

 

[blauer]

All rocks are interesting, considering EVERY rock you see is older than ANY light you see from any star (naked eye).

I agree, it looks like Chert.

 

[fuss]

I think Quartzite might be a good possibility as well.