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/sci/ - Science & Math

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6673347 No.6673347[DELETED]  [Reply] [Original]

I need help identifying a specimen i found on a hike. It appears to be igneous in origin, Which is strange, because I live on the USA east coast.

Also Geology general?

>> No.6673350
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6673350

It looks like it was chipped at some point, and the inside texture is as same as the outside.

>> No.6673351

vesicular basalt

>> No.6673353

>>6673351
Is there any clue to where it came from, such as the region of the world? I know sedimentary rocks vary greatly based on location, does that apply to igneous also?

>> No.6673363

>>6673353

>Is there any clue to where it came from, such as the region of the world?

Where exactly did you find it? A mountain range or somewhere close to the shore?

>I know sedimentary rocks vary greatly based on location, does that apply to igneous also?

Yes. Igneous rocks depend on the type of lava / magma that the rock cooled from as well as cooling times. If the rock cooled slowly then you will have larger crystals. Assuming this is basalt, the lava / magma cooled quickly enough so that large crystals didn't have time to form. The porous texture may have resulted from dissolved gasses escaping the molten rock.

But I'm not an expert. I mostly deal with sedimentary rocks.

>> No.6673389

>>6673363
i found it whilst hiking through woods in south eastern north carolina. i found it lying on the side of a logging path which had been recently re-graveled.

>> No.6673391

>>6673363
i found it whilst hiking through woods in south eastern north carolina. i found it lying on the side of a logging path which had been recently re-graveled. it could have come from anywhere.

>> No.6673394

>>6673347
It's a basalt. From the images I can see some Olvine, Plagioclase and probably some Pyroxenes. I can't really tell the difference between Pyroxenes from a photo of a hand specimen, let alone percentages, but I'm going to take a guess and say it's a Lherzolite.

I'm probably completely wrong because I know nothing about the geology of where you found it.

>> No.6673395

>>6673394
there are no places whatsoever that could produce an igneous rock near where i found it.

>> No.6673397
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6673397

>>6673395
pic related is where i found it

>> No.6673404

>>6673395
Well that's pretty weird. Got a Geology department at your closest university? You'd be surprised at what some of us waste our time on. Send an email asking what's up to whoever specialises in mineralogy or petrology.

>> No.6673406

>>6673404
I'd Imagine uncw or ecu maybe?

>> No.6673412

>>6673406
I don't know, I'm not American and I haven't had any dealings with those universities. If you can find their work email through the uni website, contact them.

>> No.6673414
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6673414

Yep, that's a rock.

>> No.6673416

>>6673412
ok, thanks for suggesting the university geologists.

>> No.6673417

>>6673414
>this fucking guy

>> No.6673419

>>6673416
No problem. I'm sorry I couldn't be more help.

I'm also sorry I don't have any hand specimens of my own on hand because I recently acquired some cool shit.

>> No.6673427

>>6673419
would you be willing to share?

>> No.6673432

>>6673427
I would, however I can't take any photos because they aren't with me.

>> No.6674991
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6674991

Oh yes, geology thread.

Bump with recent pictures of field work in Montana.

>> No.6674992

>>6673347
>rocks

Jesus Christ Marie, they're minerals.

>> No.6674994

>>6674991
>yep that's a rock

>> No.6674996
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6674996

>> No.6675031

>>6673347
Holy shit dude, its a rock. How fucking autistic can you be?
>muh rocks
>muh specimen
>muh origins
>muh ''science''

>> No.6675033

>>6674996
copper or moss?

>> No.6675142

>>6675031
Nice shitpost. 50 extra points for all the "muhs" which is probably the sound you make inside your head all day.

>> No.6675207

>>6675033

I think those might be slow-cooled garnet crystals in a porphyritic rock? I could be wrong.

>> No.6675213

>>6674991

dat foliation. What is that, gneiss?

>> No.6675936
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6675936

>>6675033
Garnets, but there is some moss there

>>6675213
Yes, gneiss

>> No.6675947

>>6675207
Its from a metamorphic rock.

>> No.6675951

>>6673347
It's a rock, trust me, I'm a scientist.