Is this a peridotite?

[Rific]

Do any of these look like periodotite? I'm mainly askin about the big weird green one but I had a cpl other nice green ones I put in the picture as well. I also think I have a lamproite too so I'll post it once I get it cleaned up.

 

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[Jim in Idaho]

Could be, but could also be epidote. Nice specimens!
Jim

 

[Eu_citzen]

I'd rule out peridotite due to lack of pyroxene. Dunite or even a very olivine-rich basalt seems possible.