| View previous topic :: View next topic |
| Author |
Message |
miqui2077
Joined: 06 Apr 2021
Posts: 4
Location: friuli
|
 Posted: Apr 06, 2021 16:41 Post subject: Help about this rock |
|
|
I found this rock in my garden (Friuli Venezia Giulia, Italy)
It seems to be a volcanic rock but here we don't have volcanoes.
0.170 litres, 270g.
It's a porous stone, the shape reminds me of an egg (half egg). It's light blue (flash of the smartphone does not reproduce real colors)
| Description: |
|
| Viewed: |
5536 Time(s) |
|
| Description: |
|
| Viewed: |
5535 Time(s) |
|
|
|
| Back to top |
|
 |
SteveB
Joined: 12 Oct 2015
Posts: 235
Location: Canberra
|
| Posted: Apr 06, 2021 17:20 Post subject: Re: help about this rock |
|
|
| A type of rhyolite maybe?Porphyritic? Italy has LOTS of volcanoes btw. Maybe little are active or dormant now but historically a lot of volcanic activity and many many many volcanic rocks in the region. Oddly its pinker “ball” inclusions remind me of a type of bauxite, Any chance you have bauxite mining in the area? Sorry I can’t offer more but volcanic origin is my gut still.
|
|
| Back to top |
|
|
Volkmar Stingl
Joined: 23 Sep 2012
Posts: 838
Location: Innsbruck
|
| Posted: Apr 06, 2021 21:45 Post subject: Re: help about this rock |
|
|
Hello!
For me this is a water-worn and well rounded (but broken) piece of slag. The glassy surface and lots of bubbles indicate this piece as man-made.
An additional picture of the broken side would help.
Volkmar
|
|
| Back to top |
|
|
miqui2077
Joined: 06 Apr 2021
Posts: 4
Location: friuli
|
| Posted: Apr 07, 2021 01:01 Post subject: Re: help about this rock |
|
|
This picture shows the broken part, and shows also the true colors of the stone.
| Description: |
|
| Viewed: |
5443 Time(s) |
|
|
|
| Back to top |
|
|
miqui2077
Joined: 06 Apr 2021
Posts: 4
Location: friuli
|
| Posted: Apr 07, 2021 01:09 Post subject: Re: help about this rock |
|
|
| SteveB wrote: | | A type of rhyolite maybe?Porphyritic? Italy has LOTS of volcanoes btw. Maybe little are active or dormant now but historically a lot of volcanic activity and many many many volcanic rocks in the region. Oddly its pinker “ball” inclusions remind me of a type of bauxite, Any chance you have bauxite mining in the area? Sorry I can’t offer more but volcanic origin is my gut still. |
We don't have bauxite here, yes from the picture it remembers that type of stone but it's caused by the flash. I will take other pictures. You can view the broken part with its true colors.
Another think that it doesn't sound with a metal dector so it doesn't contain metals.
|
|
| Back to top |
|
|
Volkmar Stingl
Joined: 23 Sep 2012
Posts: 838
Location: Innsbruck
|
| Posted: Apr 07, 2021 02:13 Post subject: Re: help about this rock |
|
|
| Definitely slag.
|
|
| Back to top |
|
|
miqui2077
Joined: 06 Apr 2021
Posts: 4
Location: friuli
|
| Posted: Apr 07, 2021 03:28 Post subject: Re: help about this rock |
|
|
| Volkmar Stingl wrote: | | Definitely slag. |
Thank you!
|
|
| Back to top |
|
|
Sante Celiberti
Joined: 04 Oct 2019
Posts: 699
Location: Tuscany
|
| Posted: Apr 07, 2021 04:40 Post subject: Re: Help about this rock |
|
|
| Perhaps a Euganean vacuolar trachyte with celadonite from the relatively nearby Zovon (Padua province, Veneto, Italy), which came by chance in your garden.
|
|
| Back to top |
|
|
|
FAQ 
Register
Log in
Forgotten your password?
