Got A Rock you Want Identified? Post it here! gimme a good picture or 3 or 4!

Warden of Reason said:
View attachment 1443583View attachment 1443584View attachment 1443585 Found this in California when i was a kid in my back yard decided to try to break it down to use for carving. Well after 10 min of trying to break it this is what i got i have no clue what it is but its hard. any idea?
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Andesite or something related? Rocks (as opposed to minerals) are a bit trickier without seeing them in person.
 

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minimus said:
View attachment 1443687
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Hey!

Can you tell me what this mineral is? I found a whole bunch of these rocks in a dump outside New Orleans. I have no idea where the came from originally and I assume they're not particularly precious. They are very uniformly silver and smooth like aluminum foil, so any other colors you see in the photos are reflected. The black specks you can see are pores. I smashed one with a hammer to make sure they weren't just spray painted. The chunks that broke off were sheet-like with some very sharp edges. Fairly lightweight.

I know nothing about rocks so I'll spare you my vague speculations.

Thanks!
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See if a knife will scratch it. (use loupe/magnification to be sure)
Do a streak test: rubb against a unglazed piece of porcelain. What color do you get?

The pores could indicate slag. But I'm far from certain on this piece in particular.
 

I'm a newbie and need help identifying this rock that I found Saturday. It showed up as 35-37 on my Garrett Ace 300. I found it at my parents 1905 homestead in Galveston, Texas. It was about 4 inches down. I tried marking it on paper and nothing shows up. It weighs 26.8 grams and it's easy to polish with just your finger.

Thank you for your help!

I sure hope these pictures attach. If not, I'll try again.
View attachment 1444190View attachment 1444191View attachment 1444192
 

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Blingy said:
I'm a newbie and need help identifying this rock that I found Saturday. It showed up as 35-37 on my Garrett Ace 300. I found it at my parents 1905 homestead in Galveston, Texas. It was about 4 inches down. I tried marking it on paper and nothing shows up. It weighs 26.8 grams and it's easy to polish with just your finger.

Thank you for your help!

I sure hope these pictures attach. If not, I'll try again.
View attachment 1444190View attachment 1444191View attachment 1444192
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The pictures did not come up, I'm afraid. Try again!:thumbsup:
 

Eu_citzen said:
Nice color! Do a hardness test - find a quartz and see if one will scratch the other. If you don't have quartz - use a knife.
Might be massive aquamarine, something related to quartz or something else I can't think it right now.
The second option is more likely.
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It scratches glass. Was the only test I could use. Would be thrilled if it were aquamarine.
 

Blingy said:
I'm a newbie and need help identifying this rock that I found Saturday. It showed up as 35-37 on my Garrett Ace 300. I found it at my parents 1905 homestead in Galveston, Texas. It was about 4 inches down. I tried marking it on paper and nothing shows up. It weighs 26.8 grams and it's easy to polish with just your finger.

Thank you for your help!

I sure hope these pictures attach. If not, I'll try again.
View attachment 1444190View attachment 1444191View attachment 1444192
Click to expand...

trying to attach the pictures again... fingers crossed! IMG_9546.JPGIMG_9547.JPGIMG_9548.JPGIMG_9549.JPG
 

Sorry in advance if I post in the wrong spot or am doing something wrong this is new to me. Does this rook look natural to anyone? it looks like a nice round beach rock but I can't get past the lines on it. it was found while metal detecting in a field. you could tell this rock did not belong there and just look out of place. it was 4-6 inches in the soil. also take notice in one of the pictures I looks like something hit it and now it looks metallic in the spot. maybe its not even a rock. any help or info would be great.
20170425_211700.jpg20170426_034111-1.jpg20170426_034111-1-1.jpg20170426_034615-1.jpg20170426_034615-1-1.jpg
 

CrazyBasenjiLady said:
It scratches glass. Was the only test I could use. Would be thrilled if it were aquamarine.
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Many minerals scratch glass, a quartz really is needed to further limit possibilities.
Being one of the commonest minerals on earth, you're likely to find it close to home.

Or perhaps to a test for specific gravity if it is not attached to host rock or other stuff, but a pure mineral.
(I'm afraid I don't remember the stone in question)
For that however you need quite a good scale.
 

NLdigger said:
Sorry in advance if I post in the wrong spot or am doing something wrong this is new to me. Does this rook look natural to anyone? it looks like a nice round beach rock but I can't get past the lines on it. it was found while metal detecting in a field. you could tell this rock did not belong there and just look out of place. it was 4-6 inches in the soil. also take notice in one of the pictures I looks like something hit it and now it looks metallic in the spot. maybe its not even a rock. any help or info would be great.
View attachment 1444361View attachment 1444362View attachment 1444363View attachment 1444364View attachment 1444365
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I'd say natural, perhaps water worn. The metallic spots are likely pyroxene's cleavage playing you a trick.
Certainly a mafic rock, but identification of those in best done in person with a loupe.

The lines are actually small quartz veins, suggesting it's been subjected to a lot of stress during it's life.
 

Sets off my detector as a hot rock. Looks to have a greenish inside with a crust outside. I always thought it could be a meteor. Sorry only picture. About the size of a golf ball or a little bigger.

metori1.jpg
 

Digger said:
Sets off my detector as a hot rock. Looks to have a greenish inside with a crust outside. I always thought it could be a meteor. Sorry only picture. About the size of a golf ball or a little bigger.

metori1.jpg
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Would need to see the inside. Doubt it's a meteorite.
 

CrazyBasenjiLady said:
Found this in a bucket of rocks at a flea market. Had a "local expert" look at it and he said it was valuable. He just wouldn't tell me what it was and wouldn't offer a value. Have a few other similar pieces in rougher form. If you need more photos, please email. Thanks!View attachment 1435495
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It both scratches and is scratched by rose quartz. This is the one that I replied that scratches glass.

I have several buckets full of stones. Up to looking at a few more?
 

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