Naked Science Forum

Non Life Sciences => Geology, Palaeontology & Archaeology => Topic started by: Curious1 on 05/09/2019 19:53:41

Title: What can you tell me about this rock I found?
Post by: Curious1 on 05/09/2019 19:53:41

Hello, new member here of course. I just joined to try and maybe find out what kind of rock this might be. I found it on the sidewalk while I was out walking a few months ago and thought it looked kinda interesting so I decided to pick it up.

(https://i.imgur.com/xISI4yG.jpg)
(https://i.imgur.com/zs58d1W.jpg)
(https://i.imgur.com/xE3Lr2f.jpg)

Title: Re: What can you tell me about this rock I found?
Post by: Kryptid on 06/09/2019 01:57:01

A photograph alone is probably not sufficient. Can you determine some of its properties?

Title: Re: What can you tell me about this rock I found?
Post by: Hayseed on 06/09/2019 04:31:58

Looks like some kind of slag.   Or perhaps burned/melted debris.

Title: Re: What can you tell me about this rock I found?
Post by: RD on 06/09/2019 05:01:55

z_slag3.png (501.65 kB . 640x564 - viewed 4847 times)
http://meteorites.wustl.edu/id/z_slag3.jpg

Title: Re: What can you tell me about this rock I found?
Post by: Abscissa on 18/09/2019 13:30:32

Can you be more specific like how hard it is and what is it looking like in real?

Title: Re: What can you tell me about this rock I found?
Post by: Dynametix on 01/10/2019 12:36:00

Can you give a few more details regarding its properties and be specific like how hard it is and all etc.

Title: Re: What can you tell me about this rock I found?
Post by: Bass on 15/10/2019 00:50:25

conchoidal fracture, glassy surface, vesicles: this is either slag (especially likely if you live near an industrial area) or obsidian (volcanic glass)