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LarryS
Just going through the box of rocks I found last year and looking through a geology website, and I see an entry for Diorite, an intrusion igneous rock.
Would that be a good ID for this?

Zombodroid18072020095524_copy_768x1060.jpg 
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Dirty Pete
Hi Larry,
If the white stuff is plagioclase feldspar and the black stuff is amphibole + biotite + pyroxene and not much if any quartz then I reckon Diorite (Coarse grained, Intermediate, intrusive) as you say. Looks about right from where I'm sitting.

Pete
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LarryS
Thanks Pete, I wouldn't have a clue of the crystal make up of the rock. I just thought it resembled an image of Diorite on geology.com  
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