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Is this quartz or glass?

Anonymous Thu 14 Jan 2016 07:23:15 No.665515 View View Reply Original Report

Quoted By: >>665516 >>665523 >>665623 >>665815 >>667174 >>667178 >>667360 >>667363 >>668196 >>668605 >>671786

Found in a river on a mountain

Anonymous

Anonymous Thu 14 Jan 2016 07:24:25 No.665516 Report

Quoted By:

>>665515
Looks like glass to me.

Anonymous

Anonymous Thu 14 Jan 2016 07:35:55 No.665521 Report

Quoted By:

Its river glass. Broken pieces of glass that gets polished by the water over time till its smooth. I have a jar of it from my childhood.

Anonymous

Anonymous Thu 14 Jan 2016 07:49:38 No.665523 Report

Quoted By: >>665524 >>665780

>>665515
I'm leaning towards quartz because of the amount of conchoidal fracturing. A sure way to test is by actually scratching it on glass. Quartz has a hardness of 7, glass is 5.5. I took an intro to geology class.

Anonymous

Anonymous Thu 14 Jan 2016 07:50:40 No.665524 Report

Quoted By: >>665527

>>665523
As in, if it scratches the glass easily, it is probably quartz.

Anonymous

Anonymous Thu 14 Jan 2016 07:58:50 No.665527 Report

Quoted By:

>>665524
Hmm good idea thank you. I found it by a bunch of other small pieces of quartz so it might be

Anonymous

Anonymous Thu 14 Jan 2016 15:20:40 No.665623 Report

Quoted By:

>>665515
Looks like glass desu senpai

Anonymous

Anonymous Thu 14 Jan 2016 19:57:23 No.665780 Report

Quoted By:

>>665523
Glass fractures in the same way, the hardness test is the best way to tell them apart.

Anonymous

Anonymous Thu 14 Jan 2016 21:19:25 No.665815 Report

Quoted By: >>665914 >>665929

>>665515
Aren't quartz and glass both silicon dioxide? I think the only difference is whether it crystallized or was melted.

Anonymous

Anonymous Thu 14 Jan 2016 23:51:51 No.665914 Report

Quoted By: >>665950

>>665815
I think quartz has a much more consistent and symmetrical crystal structure, and glass is completely random. Also man made glass almost always has other ingredients added to the SiO2 that lowers the hardness. I believe glass is about 80% SiO2

Anonymous

Anonymous Fri 15 Jan 2016 00:25:16 No.665929 Report

Quoted By:

>>665815
Completely different materials desu senpai

Anonymous

Anonymous Fri 15 Jan 2016 01:00:08 No.665950 Report

Quoted By:

>>665914
Correct. The best way, as stated earlier, is to try to scratch glass with it. Also, you'd find it with other quartz pieces, or at least in an area where granite or another felsic rock is weathering

Anonymous

Anonymous Sat 16 Jan 2016 04:35:22 No.666846 Report

Quoted By: >>666969 >>667158 >>669019 >>670650

Geology student here. That's definitely not quartz lol. No cleavage son.

Anonymous

Anonymous Sat 16 Jan 2016 08:07:49 No.666969 Report

Quoted By: >>667112 >>667158 >>669019 >>670650

>>666846
Geology student here. Quartz can, and often does, have chonchoidal fracturing. A peice of glass in a river that has been eroded like this wouldn't be shiny and clear looking. Look at any river and beach glass that is natural. 99.9 percent of the time it will be scratched up to the point where it is cloudy. Quartz on the other hand, will have fracturing without the presence of scratches.

Anonymous

Anonymous Sat 16 Jan 2016 16:27:51 No.667112 Report

Quoted By:

>>666969
Damn son you just out geology-ed me. Gneiss!

Anonymous

Anonymous Sat 16 Jan 2016 18:04:48 No.667148 Report

Quoted By: >>667158 >>667526 >>670650

Someone who has an actual geology degree here, it's glass, i have quartz from multiple places across US never found a quartz like that

Anonymous

Anonymous Sat 16 Jan 2016 18:16:53 No.667158 Report

Quoted By: >>667391 >>670650

>>666846
> student

>>666969
> student

>>667148
> graduate

Anonymous

Anonymous Sat 16 Jan 2016 18:38:25 No.667174 Report

Quoted By:

>>665515
Nursing student here, fuck your pebbles nigga.

Anonymous

Anonymous Sat 16 Jan 2016 18:53:36 No.667178 Report

Quoted By:

>>665515
Casual rock hound here. That's quartz

Anonymous

Anonymous Sat 16 Jan 2016 23:21:57 No.667350 Report

Quoted By:

Thats a fucking diamond!

Anonymous

Anonymous Sat 16 Jan 2016 23:25:30 No.667353 Report

Quoted By:

Tathz no diamond dipshit......

Anonymous

Anonymous Sat 16 Jan 2016 23:30:04 No.667357 Report

Quoted By:

Rock here, thats my freind, you kidnapped him!

Anonymous

Anonymous Sat 16 Jan 2016 23:30:40 No.667358 Report

Quoted By:

Ooh heeeell yes its a diamond. Its either that or an ice cube. Trust me, I know this. I fint know nothn bout geology but I do know my rocks.

Anonymous

Anonymous Sat 16 Jan 2016 23:31:02 No.667360 Report

Quoted By:

>>665515
if it's quartz it will throw sparks from steel

Anonymous

Anonymous Sat 16 Jan 2016 23:31:14 No.667362 Report

Quoted By:

it is a quartz

Anonymous

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Anonymous Sat 16 Jan 2016 23:31:49 No.667363 Report

Quoted By: >>667365

>>665515

Philosophy of Science student here. That's a tear from a rock giant.

Anonymous

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Anonymous Sat 16 Jan 2016 23:40:59 No.667365 Report

Quoted By:

>>667363
the poor thing

Anonymous

Anonymous Sun 17 Jan 2016 00:42:36 No.667391 Report

Quoted By:

>>667158
>Claims made on the internet

It's fairly hard to tell the two apart without a hardness test, OP. There's no cleavage to look for, as neither have defined cleavage angles. The anon talking about weathering granites has the right idea, though. What kind of terrane is your stream in? Any plutonic rocks in the area, or a ways upstream?

Anonymous

Anonymous Sun 17 Jan 2016 00:55:17 No.667396 Report

Quoted By: >>670707

OP fucking scratch it against glass already

Anonymous

Anonymous Sun 17 Jan 2016 04:02:28 No.667526 Report

Quoted By:

>>667148
What kind of work do you do? I recently changed my major to Geology

Anonymous

Anonymous Sun 17 Jan 2016 04:35:31 No.667559 Report

Quoted By: >>667662

Quarts is basically glass though, innit? Both are silica.

Anonymous

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Anonymous Sun 17 Jan 2016 07:59:41 No.667662 Report

Quoted By: >>669051

>>667559
diamond is basically graphite though, innit? both are carbon

Anonymous

Anonymous Mon 18 Jan 2016 00:04:42 No.668196 Report

Quoted By:

>>665515
It isn't quartz

Anonymous

Anonymous Mon 18 Jan 2016 03:09:55 No.668305 Report

Quoted By: >>668306

This thread pisses me off

Anonymous

Anonymous Mon 18 Jan 2016 03:11:15 No.668306 Report

Quoted By: >>670679

>>668305
well what the hell waddled up to your creek and took a dump >:|

Anonymous

Anonymous Mon 18 Jan 2016 17:02:35 No.668605 Report

Quoted By: >>669030 >>669033

>>665515
Geo grad here.

Test it by scratching it against glass, quartz is harder and it'll be easy.

Or look for little round bubbles in there (glass is more likely to have near perfect bubbles. Quartz is a better conductor of heat too.

Looks like glass to me tho nigga

Anonymous

Anonymous Tue 19 Jan 2016 04:13:50 No.669019 Report

Quoted By: >>669033

>>666846
>>666969
pharmacy technician here, you're both wrong.

Anonymous

Anonymous Tue 19 Jan 2016 04:20:02 No.669030 Report

Quoted By: >>669033

>>668605
UPS driver here, that's glass nigga.

Anonymous

Anonymous Tue 19 Jan 2016 04:24:01 No.669033 Report

Quoted By:

>>669030
>>669019
>>668605
Feminist dance therapy major here, it's the crystallized tears of oppressed women everywhere.

Anonymous

Anonymous Tue 19 Jan 2016 04:51:03 No.669051 Report

Quoted By: >>669058 >>671907

>>667662
Correct. One way to tell them apart is to do a hardness test, much like glass/quartz

Anonymous

Anonymous Tue 19 Jan 2016 05:08:34 No.669058 Report

Quoted By: >>669060 >>669081

>>669051
what's your occupation?

Anonymous

Anonymous Tue 19 Jan 2016 05:17:19 No.669060 Report

Quoted By:

>>669058
deodorant tester in Axe's QC center

Anon !VHSdm0n/9Q

Anon !VHSdm0n/9Q Tue 19 Jan 2016 05:23:05 No.669063 Report

Quoted By: >>669080

Women's studies 1 grad here

It doesn't matter what it is necause the patriarchy is still afoot

Anonymous

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Anonymous Tue 19 Jan 2016 05:47:00 No.669080 Report

Quoted By:

>>669063

Anonymous

Anonymous Tue 19 Jan 2016 05:47:33 No.669081 Report

Quoted By:

>>669058
masturbation inspector

Anonymous

Anonymous Thu 21 Jan 2016 16:51:30 No.670650 Report

Quoted By:

>>666846
>>666969
>>667148
>>667158
Geology PhD ScD tenured professor here. It's a very rare kind of diamond with radial symmetry internal cross-section lattices.

Anonymous

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Anonymous Thu 21 Jan 2016 17:26:24 No.670663 Report

Quoted By:

captain planet here, thats my left testicle, lost it last week in battle

RIP in peace, Lefty

Anonymous

Anonymous Thu 21 Jan 2016 18:25:03 No.670679 Report

Quoted By: >>670682

>>668306
>waddled into
ftfy

Anonymous

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Anonymous Thu 21 Jan 2016 18:29:13 No.670682 Report

Quoted By:

>>670679
up to i says

Anonymous

Anonymous Thu 21 Jan 2016 19:25:45 No.670707 Report

Quoted By:

>>667396
This

Anonymous

Anonymous Thu 21 Jan 2016 19:28:21 No.670710 Report

Quoted By: >>670727

This is the best thread on /out/ in weeks, and it's about a fucking rock.

Anonymous

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Anonymous Thu 21 Jan 2016 20:16:16 No.670727 Report

Quoted By: >>671801

>>670710
But it wasn't a rock......

Anonymous

Anonymous Sat 23 Jan 2016 04:45:14 No.671786 Report

Quoted By:

>>665515
Potter/glassblower here. Looks like glass to me. No crystalline structure, no mineral inclusions, round air bubbles, no cleavage. Raised surfaces are more matte, indents are glossy with ripple pattern consistent with impact break of amorphous structured vitreous glass. Probably transparent soda lime bottle glass made in the last 50 years.

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Is this quartz or glass?