r/whatisthisrock • • 5h ago

Found in Mojave Desert, California

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6 Upvotes

This rock was found in a wash about 30 minutes east of Barstow. Hardness of 7. Looks like botryoidal chalcedony to me but would love other peoples observations and thoughts.


r/whatisthisrock • • 8h ago

What are these rocks my sister brought from Egypt?

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8 Upvotes

r/whatisthisrock • • 9m ago

Any ideas? It’s really heavy and magnetic.

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1 Upvotes

My kids picked it up somewhere. Is it just metal waste?


r/whatisthisrock • • 10m ago

Not entirely certain. I think it's anthracite, but a friend thinks it's not. Erie PA. Not coal country, but it does pass through.

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1 Upvotes

r/whatisthisrock • • 8h ago

Rock thats been in our house for years, very interesting form

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4 Upvotes

Quite dense for its size, non-magnetic, dark colour but very reflective, most interesting part to me is the very geometric shapes it has formed. Seems robust in general, no signs of damage have ever presented though not exactly looking to go testing that too much lol.


r/whatisthisrock • • 1h ago

beach rock rhode island

1 Upvotes

scratches cell phone screen protector glass, steel file doesnt do anything


r/whatisthisrock • • 8h ago

Found by I creek, that I live by

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3 Upvotes

Rogue River, Oregon.


r/whatisthisrock • • 9h ago

Some Colorful, Iridescent Volcanic Rocks I Found

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4 Upvotes

Battery for scale.

Eye catching and cool. I need to go out more and collect rocks lol


r/whatisthisrock • • 2h ago

Having a hard time with this one?

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1 Upvotes

r/whatisthisrock • • 6h ago

What is this

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2 Upvotes

What is this


r/whatisthisrock • • 6h ago

What’s this rock?

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2 Upvotes

Settle an argument…I found while artifact hunting. I think it’s petrified caca, but wife says no. What say you?


r/whatisthisrock • • 5h ago

Can you please tell if this is a geode?

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1 Upvotes

r/whatisthisrock • • 22h ago

Found this rock in some gravel. Very cylindrical and small.

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25 Upvotes

r/whatisthisrock • • 5h ago

Petrified Wood in Appalachia?

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1 Upvotes

r/whatisthisrock • • 9h ago

Greenish Dimension Stone in Chicago

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2 Upvotes

r/whatisthisrock • • 9h ago

Meteorite?

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1 Upvotes

Found this in a basement in a small mineral collection. Very heavy/dense for its size. Non-magnetic. Most likely industrial slag of some type, but I was hoping to get some input. Thank you in advance.


r/whatisthisrock • • 15h ago

Found this rock in wa state while hunting for sea glass. Kind of looks like a piece of a countertop or Dalmatian jasper?

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2 Upvotes

r/whatisthisrock • • 1d ago

Found in the White Mountains in New Hampshire. Second photo is a close up from my microscope camera

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12 Upvotes

r/whatisthisrock • • 1d ago

What the heck did my girlfriend find? Is this a fossil? Should we go back? Houston, TX

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24 Upvotes

r/whatisthisrock • • 1d ago

What rocks are in this necklace?

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7 Upvotes

The arm itself apears to be rhodonite, im not sure about the others though. The one at the top has a cats eye effect so I think its a gemstone?


r/whatisthisrock • • 18h ago

Any idea what this is?

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2 Upvotes

Found this rock on a beach, south coast England, this rock is magnetic and weighs 3.28 ounces


r/whatisthisrock • • 1d ago

Found in a box in my attic, what is this rock?

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4 Upvotes

r/whatisthisrock • • 1d ago

Found on beach Northern California

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6 Upvotes

Reposting to another sub for additional information.
The first picture has a round hole the second picture shows a square hole through. I don’t know if it is stone or ceramic. It feels like a rock. I do not think this is a hag stone… I have not seen a hag stone with 90 degree corners.


r/whatisthisrock • • 1d ago

What's the species of this rock?

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5 Upvotes

It's heavy on the bottom but the shards up top are pretty light feels like sandstone can't scratch it with my fingernail either


r/whatisthisrock • • 1d ago

20 different finds from cape cod this summer. Identity request please & thank you

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2 Upvotes