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ID rock please

Joined
11 Apr 2013
Messages
266
Location
Republic of Ireland
I bought a couple of crates of Rock from adverts website. All of them I know except this one. Any 6D07939C-54DD-4FB0-A9ED-B5B90CA10809.jpeg
EB29D96A-61BF-466B-965E-710DF6B459E0.jpeg
ideas?
 
It looks like a pegmatite. It is often dark due to presence of biotite and red due to presence of feldspar - it cools quite slowly and these crystals are allowed to form. I think it may have been collected from somewhere near the coast because you can see the surface calcium deposits.
 
There is a bit of calcium deposits on the surface alright. I spoke with the seller and he bought them from a local store. I’ll use them, should be fine. Thanks Simon
 
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