Druzy (?) Type Material - Help ID?

[BridgetownTreasures]

There are several of these pieces in grandpa's collection - mostly now strewn about Dad's property. They range in size from about 9" up to one behemoth that is about 24"x16"x12"....

99% of grandpa's rocks are from Oregon. Thanks for any help!

P.S. I have a lot of photos of items I have not yet posted here (Some of you are probably sick of grandpa's collection) If you have any interest in perusing - to help with ID but also just to look at some cool rocks! - just message me and I'll send you a link to some online photo galleries.

 

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[Steve1236]

It looks a lot like Wyoming botryoidal youngite, I'm not 100% but that's what I'm thinking it is, if not then it's botryoidal chalcedony maybe.

 

[BridgetownTreasures]

From what I can see, youngite will flouresce green in UV - I'll give that a try. The matrix/base rock (don't know the vocab) looks very much like what I'm seeing of Wyoming botryoidal youngite samples online.

Will chalcedony flouresce as well?

 

[Steve1236]

Yes some Chalcedony will, a lot of Chalcedony from Arizona fluorescence green, even from my spot it goes a little green with a cheap short wave uv light I have that barely turns on lol, I was thinking as well the matrix/host rock resembles what you have to.

 

[Steve1236]

So Wyoming youngite is Chalcedony/Jasper, I just looked it up and it explains the green fluorescence.

 

[DDancer]

I'm sure some of us dont mind you showing off the collection. That bit may not be from Wyoming but it looks good. Here's a link to a community that knows a lot about fluorescent materials : https://www.uvminerals.org/

 

[BridgetownTreasures]

Is it inaccurate to refer to this as druzy material? Not sure where grandpa pulled this out of, but he liked it enough to keep a lot of it. It has a great, sort of surreal look to it when it's in the dirt with mosses & such... here is a pic of the biggest chunk, and links to other pics for the curious.







https://photos.app.goo.gl/MCuNDhXPQA4vRyyz6

https://photos.app.goo.gl/jCHmCMpHybnQWz9y9

https://photos.app.goo.gl/T3jVMjekedU3Vv7b6

https://photos.app.goo.gl/xiWBGr16GTgvNaLA9

 

[Steve1236]

Does it have little tiny crystals that sparkle when you move it around in the sunlight, if so then it is druzy.