🔎 UNIDENTIFIED What is this gorgeous hunk of green

[naturegirl]

Hi all! I found this beauty in oklahoma, by a lake, near a quarry, but also by a highway. Seriusly could have bounced off a truck?! I've gotten suggestions of aventurine or amozonite....a steel nail just leaves a streak that I can rub off, so its pretty hard? I really really want it

to have come out of the hillsides around, but 20 years of walking with my eyes to the ground, ive not even found a chip of anything similar.

So, can anyone say what this beauty might be? And if its agreed it fell off some truck, im imagining a trailer with a load stacked for landscapeing or building lost a brick? Thanks for any answers or guesses. ~naturegirl

 

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[Boghog1]

Maybe beryl?

ETA Google says Amazonite. a location where found could help narrow it down

 

[naturegirl]

Maybe beryl?

ETA Google says Amazonite. a location where found could help narrow it down

Im sorry, osage county, oklahoma. Kinda where the limestone formations give way to sandstone formations...i dont know all the right terminology. The nearby quarry was for sandstone, but Ive not been to it. Its on the otherside of the hilltop. Also, a small lake dam was built in this same 1/2 mile radious...so lots of rock busting and earth moving...

 

[Clay Diggins]

Not Amanzonite. Amanzonite is a green colored feldspar. Feldspar does not break like that.

Considering the hardness and the fracture surface it looks to be a greenish chalcedony. That particular color is usually referred to as "seafoam" and is often classified as an agate. I know of some seafoam agate from Washington State that is almost identical to your pictures.

I think it's safe to say it is not a rock native to Oklahoma.

 

[naturegirl]

Not Amanzonite. Amanzonite is a green colored feldspar. Feldspar does not break like that.

Considering the hardness and the fracture surface it looks to be a greenish chalcedony. That particular color is usually referred to as "seafoam" and is often classified as an agate. I know of some seafoam agate from Washington State that is almost identical to your pictures.

I think it's safe to say it is not a rock native to Oklahoma.

Oh thank you! This is the most definitive answer ive had..i dont care how it ended up where i found it..its just beautiful wherever it came from thank you!!

 

[fuss]

99.99% certain that is Green Adventurine which is Quartzite (metamorphic rock) with Fuchsite Mica (mineral). I have a fair amount of it, its commonly used as a decorative landscape and Lapidary stone.

 

[JohnWhite]

Clay May be on the right path…Here is a link you can check out…. https://www.google.com/search?q=chr...HMy0xLjYtMpgBAKABAQ&sclient=mobile-gws-wiz-hp

Ed T

 

[Blackfoot58]

That is a great looking rock. Congratulations regardless what it ends up being.

 

[Jim in Idaho]

I'm thinking Fuss is on the right track. Looks too coarse-grained to be a chalcedony. More likely a metamorphic of some sort.
Jim

 

[Clay Diggins]

99.99% certain that is Green Adventurine which is Quartzite (metamorphic rock) with Fuchsite Mica (mineral). I have a fair amount of it, its commonly used as a decorative landscape and Lapidary stone.

It's only Adventurine if it has sparkles in it. (mica, hematite ) No sparkles and it's just common quartzsite.

I'm not seeing any sparkles. Maybe naturegirl can tell us if there appears to be mica included in the rock.

 

[JohnWhite]

Is there any chance of it being orthoclase possibly Amazonite

Well…it looks like someone already said that it looks like amazonite…

Oh well…

Good luck…

Ed T

 

[naturegirl]

99.99% certain that is Green Adventurine which is Quartzite (metamorphic rock) with Fuchsite Mica (mineral). I have a fair amount of it, its commonly used as a decorative landscape and Lapidary stone.

Landscaping! That is the use i was wondering about, because its so large. Not from oklahoma, whew, i can quit trying to find more, quite a treasure for a poor girl, and quite frankly, the Gods must be crazy or Providence threw a rock at me....thanks for answering, was hoping someone with lapidary expetience might chime in...lisa

 

[naturegirl]

How large should the mica be? It doesnt look like it has any suspended inside...just going by the polished pieces of aventurine i see online. And its more bluish in person. Maybe I can some macro pics.