some type of green rock help identify?

[Unitedstatesofamerica1]

 

[kcm]

Quartzite?

 

[Tuberale]

Don't think quartzite. Quartz is green when it have nickel in it. Another common green stone is Serpentine.

 

[kcm]

Quartz and Quartzite are related, but not the same. Quartzite can come in multiple colors without having ANY metals in it. Here's a good page on Quartzite:
https://flexiblelearning.auckland.ac.nz/rocks_minerals/rocks/quartzite.html

 

[kcm]

Is it porous or non-porous? Meaning, if you place a bit of water on the dry rock, will the water soak in after a while?

 

[austin]

I vote for serpentine also. Mine about 60 miles from here and the smaller pieces are left along the road for souvenirs. Look like these.