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Colorado Prospector - Gem and mineral prospecting and mining forums _ Gem and Mineral Specimen Finds or Processes _ Newbie Rockhound - ID help?

Posted by: aphillips949 Aug 22 2014, 05:29 PM

Hello everyone! My husband and I just recently moved to the Grand Junction area and I was immediately taken aback by the beauty of the state, especially by the interesting geology. So, I figured rockhounding would be a good hobby to take up. I collected the following pieces on the Green River, South of Dinosaur National Monument in Utah. I *think* I may know what I have but some confirmation from those more experienced would be super helpful. thumbsupsmileyanim.gif

This one doesn't seem to scratch with stainless steel, and has a very fine "glitter" effect over the veining. The veining looks slightly "waxy". Is this possibly agate? Is the white/purple part the same type of stone as the red, just a different color?



I think this one may be the same material as what's in the center of the first:


I have no idea what this is. My husband seems to think it's a fossil of some sort, but I'm not sure. It doesn't appear to scratch with stainless.



Again, no idea what this one is:


I obviously have no idea what I'm looking at/for, so any help would be appreciated! Thanks in advance!

Posted by: Woody Aug 22 2014, 08:41 PM

Hello aphillips949,

I have been around that area you mentioned quite a bit before. I would say you are right on the Agate. There may be a little something else on the edges mixed in there, I can't blow you pictures up so can't really tell but for the most part it is a piece of Agate. As for the question on the piece suspected of being a fossil.... I think you might have a piece of "Brecciated Agate". Again I can't expand the picture and tell for sure but it should fall into this category. Since I can't blow-up your picture and tell for sure, do a Google search and see if it might be a match.

"Brecciated" can come in different forms. Basically it means, "Broken up pieces of rock inside a rock". It is commonly associated with Jasper and Agate.

That would be my guess anyway, Woody.



Posted by: aphillips949 Aug 25 2014, 11:35 AM

Woody -- Thanks so much for your help! I Googled brecciated agate and I think you're right, it definitely looks very, very similar to what I have here.

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