Chrysoprase or phrenite or something else?

[rob.gray.jr]

Found these walking a railroad tracks in Delaware.

Anyone want to take a look and help identify them?

 

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[Eu_citzen]

Could be prehnite and some zeolite. (last pic)
I'd recommend a hardness test on a not so fine specimen, if you got one to sacrifice. Knife and quartz for testing.

 

[rob.gray.jr]

I did try scratching glass, and it seemed to ever so slightly mark the glass - nothing like quartz does though. I'll do some more testing tonight.

One question, I have some extra shower tile (I think porcelain) and was wondering if I could use the back side of it for streak testing? Or, is there something special about porcelain for streak testing?

 

[Eu_citzen]

Considering neither prehnite nor chrysoprase/chalcedony has a streak...well a streak test aids no useful info.
But in a general term, yes, as long as the porcelain isn't glazed it's fine.

 

[rob.gray.jr]

Doh! Good to know.

I snagged A few more pieces today that aren't as nice as the first few. I'll see if I can scratch these "seconds" up.