New here. Always wanted to know what these rocks are.

redtailvision

Jr. Member
Nov 3, 2012
43
14
Ohio
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Have collected rocks all my life, but don't know what many are. I just pick up whatever catches my eye. Glad I found this site. You all seem very knowledgeable and I hope someone can identify some of my collection. Thanks so much!
P..10 and 11 Found two of these. Both about the same size, about 2lbs each. Close up is of the same stone.
P..12, 13 and 14 This one is odd to me. Very heavy about 8lbs. The black areas attract a magnet one spot will hold a paperclip. The dark areas are smooth with some looking like square blocks. The red crystal are is deep red and clear. Strong light needed to see it. White and green crystals I think are quartz.
Both stones came from a small glacial deposit near my home.
 

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Where are you located?
If found in a glacial till then it could have come from anywhere. A safe guess is Canada.
Both rocks very different and come from different locations/deposits.
For the first rock check out Jasper or Jade. Both can be red or green. Jasper is a little harder than Jade. Both are found in that big white spot above the US on the weather map.
Second rock has a lot-o-stuff in it.
Magnetic part could be magnetite, but I can't tell from the picture. It could be a few other things also. Google magnetic rocks.
Red crystal mass could be some form of corundum or garnets. If they have any size to them then could be worth something or they could be good for making sand paper with.
Red and green crystals, how many sides to the crystal? Could be lot -o-things, but I don't think it is quartz. If it is harder than quartz then you need to check out gemstones that have a hardness of 8 or 9.
In general the rock is a pegmatite.
 

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That first one is a treasure. How big is it?
 

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Thanks for helping! I'm in NW Ohio. The crystals look like six sides. Can't see the whole thing. The first rock is about 5 1/2 in long, 3 in high, 2 1/2 thick at the bottom. Found two of these the second one is a bit larger. Won't scratch with a fingernail but will with a key. Lots of nice rocks in this spot.
 

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Big difference between a fingernail and a key.
However it rules out jasper.
Is there a difference in hardness between the green and the red parts.
Your state university probably has tracked all the glacial deposits back to their old home in Canada. Send them a pic and see what they say.
Sounds like you have found an area with some pretty nice glacial garbage.
 

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Not much difference, if anything the green seems a bit harder. This area is great. Have brought home some nice rounded rocks over 100lbs. One took about 3 years to finally come loose. Will get some pics posted in the "My Collections" forum soon. Thanks again for your expertise!
 

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that first one is amazing with the green layers, no idea as to what it is though. i would love to find one around here and take a few slices off of it.
 

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Have collected rocks all my life, but don't know what many are. I just pick up whatever catches my eye. Glad I found this site. You all seem very knowledgeable and I hope someone can identify some of my collection. Thanks so much!
P..10 and 11 Found two of these. Both about the same size, about 2lbs each. Close up is of the same stone.
P..12, 13 and 14 This one is odd to me. Very heavy about 8lbs. The black areas attract a magnet one spot will hold a paperclip. The dark areas are smooth with some looking like square blocks. The red crystal are is deep red and clear. Strong light needed to see it. White and green crystals I think are quartz.
Both stones came from a small glacial deposit near my home.

1= Pegmatit stone,striped green turmaline,rounded in river.




2= Pegmatit rock,white zone quarzite,white-green zone jade,red zone garnet,magnetic black zone is hematit, rutile or ilmenite.



Garnet, commonly almandine or grossular, is a common mineral within pegmatites intruding mafic and carbonate-bearing sequences.
 

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Turk, Thanks for posting the image of tourmalina.. However I still feel that the green strands are Malchite.. becasue they run from left to right.. where as the lourmalins tends to runs in many differant directions. As for the Brown host stone.. One must realize that most stones are or would be considred combo stones.. meaning they have several differant types of minerals within one main or host stone. About the only things I can get out of these brown stone is Jasper or Agate.. As I discovered this weekend.. Malachite can be almost anywhere. Th abandon copper mine I explored had pleanty of samples.. Just nothing worth showing.
 

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Ok,yours right. 1,2 pics are jasper.

1-Black tourmalin on the jasper.
2-Green malachite on the jasper.
 

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Thats some good looking rocks.
 

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Hey mate, could you post a dry freshly broken surface of the brown rock?
Break it up with a hammer, for example. Just use gloves and eye protection!!

I'm thinking more in the lines of pyroxene, epidote or even serpentine on the greenish rocks.
Could somehow be related to skarn, I suppose.
Can the greenish rocks be scratched with a knife?
 

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Many thanks to all for your input! Here are a few of the rocks we have found at this location over the years.
 

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