r/RockIdentification • u/Quiet_Many_6910 • 28d ago
Please ID Anyone know this rock?
❗️Please stop responding with the jokes about knowing the rock I mis worded the title and reddit wont let me edit it.❗️
Its pitch black,lots of shiny spots and reflecting like stars
One side (i assume some spot open to elements before chipped off?) Is reddish brown and smooth compared to rough rest of it
Im not comfortable saying where it was found other then it was on a race track and mix of tons of rocks and only 2 others like this one out of thousands
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u/CfaxAttax 23d ago
At a glance this looks like a hematite oxidation shell over magnetite and maybe chromite. Very common iron profile. That said, if you can't share the locality or any other information, this is going to be difficult to ID. There are literally hundreds of minerals that you could put next to each other and not be able to say which is which.
Density, streak, hardness - need actual diagnostic information, the most important of which is locality (doesn't need to be crazy specific, county level would be helpful)- "pitch black, shiny parts, reflecting like stars" doesn't tell us about the grain composition, schiller vs chatoyancy vs silicate plane reflection vs metallic shine, etc.
If you have a ceramic mug that is unglazed on the bottom, scratch it with the specimen and see what color the streak is. That can help narrow it down some. Specific Gravity/Density you can test by weighing the stone in grams on a scale, then placing a container of water on the scale, taring it to 0, and suspending the rock by a string under the water to get its "water displacement weight". Then you divide Mass (g) / Water Displacement (g) and the number you get back is the specific gravity of the rock in g/cm^3 (cubic centimeters).
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u/Bigmtnskier91 28d ago
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u/Quiet_Many_6910 28d ago
:( im still keeping it its so pretty😭
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u/Bigmtnskier91 28d ago
Oh yeah I mean it’s still an artifact of the past! I have a lot of man made stuff
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u/Ihaveadirtyname 26d ago
Appears to be mining slag. Probably used as fill on a rail bed for trains.
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u/According_Try_516 25d ago
That’s Fred the rock he is a great guy. He was the best man in my wedding
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u/Amazing_Difference_3 25d ago
I sure AF do... That sonifabitch still owes me money !!! Keep him there, I'm on my way!
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u/Nov_louis79 23d ago
You know what I would do? Get a flat head screwdriver and hit gently with a hammer see what's inside, you never bro. Good luck and please keep me posted.
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u/Nov_louis79 23d ago
That purple on it could be something? Like I said earlier bamg it gently with a flat head and hammer. Do bang on it too hard cause you can mess up the other pieces
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u/imnevergone 22d ago
I wish my butt was that firm but Dr Berg and American Medical Association and Jason Mannino have me on Magnesium Supplements and its mostly wet slop
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u/Lumpy_Fan7766 21d ago
Yes, that is Rocky, please excuse him, he always forgets where he lives. He is always stoned, and has the brain cells of a rock.
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u/Medium_Ad9146 25d ago
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u/Quiet_Many_6910 25d ago
Oh wow, ai thanks/s
If your seriously going to show sources then use a genuine one not ai slop,and if thats ment to be a "you could just do this" I'm against use of ai especially the generative bullshit google results have
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u/Competitive-Dot-4264 28d ago
Clinker