Greenstone porphyrys needed
Lisanne Pearcy, Chemeketa Community College
Description of Available Specimens
I am looking for 12-24 hand-sample size pieces of greenstone (or equivalent amount that I could break up), preferably with relict phenocrysts.
I could pay for shipping. For possible trade I have some Columbia River Basalt (large chunks), serpentinite (mostly hand-sample size, some soapstone (fragile, mostly hand-sample size), and siliceous sinter hotsprings deposits (large hand-samples) all collected in Oregon.