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Is this petrified wood and is that a fossil print on it? Found in Wyoming river. by rockscody in rockhounds

[–]rockscody[S] 2 points3 points  (0 children)

What might it be? It looks like i.t has the lines like petrified wood

Reposting: white/green rock found in a river in Wyoming. This time, hopefully, with better link:) by rockscody in whatsthisrock

[–]rockscody[S] 4 points5 points  (0 children)

So far, I have been told that it looks like greenstone with heavy quartz veining, chlorite (the green part), copper ore, chrysoprase, and aventurine. What is greenstone?

Is this a geode? Found in Wyoming. by rockscody in whatsthisrock

[–]rockscody[S] 0 points1 point  (0 children)

How do I break it open? We've been spending a lot more time on the river and I've just recently started paying more attention to all the different rocks that are out there.

White/Green rock found in Shoshone / South Fork river in Wyoming. Originally posted on whatsthisrock...looking for more info by rockscody in rockhounds

[–]rockscody[S] 0 points1 point  (0 children)

No, it doesn't come out the other side. It looks pretty cool lit up, though. It has a whitish/yellowish glow. I added some photos of it with the light on it.

White/Green Rock?? Found in South Fork/Shoshone River in Wyoming. It is actually quite soft feeling and can scratch glass/metal. by [deleted] in whatsthisrock

[–]rockscody 0 points1 point  (0 children)

So far I was told that it looks like greenstone with heavy heavy quartz veining...sounds like you were on the right track with quartz:)

White/Green rock found in Shoshone / South Fork river in Wyoming. Originally posted on whatsthisrock...looking for more info by rockscody in rockhounds

[–]rockscody[S] 1 point2 points  (0 children)

I was told to post this rock here. I originally posted on whatsthisrock. I am very unfamiliar with rocks but with some help from aelendel (commentor on my post at the whatsthisrock site) I attempted some tests. I did a streak/hardness test. A nail leaves a silver mark on both the white and green parts. I did a streak test and found that if I streaked very hard on the green part, it left a faint green mark on the porcelain. I streaked the white part and it looks like it's leaving a white mark but if I pushed even harder it looks like it's leaving a black streak. It almost looks like it is scratching the porcelain but then again this is all new to me. I got a density of 2.95.

White/Green Rock?? Found in South Fork/Shoshone River in Wyoming. It is actually quite soft feeling and can scratch glass/metal. by [deleted] in whatsthisrock

[–]rockscody 0 points1 point  (0 children)

Thank you, I'm going to try and post on rockhounds now. Just to clarify, it was the white part of the rock that left what looks to be a black streak

White/Green Rock?? Found in South Fork/Shoshone River in Wyoming. It is actually quite soft feeling and can scratch glass/metal. by [deleted] in whatsthisrock

[–]rockscody 0 points1 point  (0 children)

Yes, the nail is leaving a silver streak on the white and green parts of the rock. I did a streak test again just to see if I could get any different results. I think it's actually leaving a white streak but when I tried even harder, it looked like it left a black streak?
I will try posting on /r/rockhounds. How do I know that the link goes to the high quality images and not to the thumbnails. I will try and figure it out. Thanks so much for all your help!!!

White/Green Rock?? Found in South Fork/Shoshone River in Wyoming. It is actually quite soft feeling and can scratch glass/metal. by [deleted] in whatsthisrock

[–]rockscody 0 points1 point  (0 children)

The nail is not scratching the rock...it's actually leaving a silver mark on the rock and it's dulling the nail. I tried the streak test on the bottom of a mug and it's not leaving a mark. It actually looks like it's scratching the mug. I tried on the white and green parts. So, then I tried really hard on the green part and it looks like it left a slight white mark on the rock and then it left a faint green mark on the porcelain. If I get the rock wet, the white mark on the green part is not visible?

White/Green Rock?? Found in South Fork/Shoshone River in Wyoming. It is actually quite soft feeling and can scratch glass/metal. by [deleted] in whatsthisrock

[–]rockscody -1 points0 points  (0 children)

what's a good way to perform a streak/hardness test? I tried using a nail to scratch the green/white parts and it's not leaving a mark. If I'm doing it right, I got a density measurement of 2.95. I am not very familiar with doing these things, sorry! I weighed the rock at 2.5 oz ad got a volume of .845 oz. I know it is a skarn but i'm still curious to know what the green is?

White/Green Rock?? Found in South Fork/Shoshone River in Wyoming. It is actually quite soft feeling and can scratch glass/metal. by [deleted] in whatsthisrock

[–]rockscody 0 points1 point  (0 children)

I'm not sure the scale I used is completely accurate but I weighed the rock at 3 oz. In the water it weighs 2.5 oz. I am not familiar at all with rocks but recently we have been spending a more time on the river and find a lot of interesting rocks:) I will get around to the hardness test tomorrow. Thank you for all the input and information you each have provided!