Can you Help I.D. these rocks. They are from central Mexico.

[Mexico]

 

[HuntinDog]

Mexico,
That's a cool rock.
Looks to me like melted glass form a fire, but I don't know rock or minerals.

You might try posting in the Rock & mineral Forum here on treasurenet for better answers.

and Welcome to Treasurenet

 

[Plug N Play]

Rhyolite and Chalcedony

 

[Mexico]

Thanks H.D. This whole area is Volcanically active. We even get our power through geothermal plants. I have found many rocks that look like glass insidewhen you bust them apart. the crystals are so clear. Also where Im at was a huge silver mining town... Cheers

 

[Mexico]

P.n.P Thanks for looking. There are other rocks that have clear crystals that almost look like glass but the rock is different. lots of different rocks located here with a lot of different crystallization.( small flakes to large chunks) This was an old silver mining town.

 

[Mexico]

Here are other rocks from the same place.

More rocks from Mexico. Still not sure if i need to crush them for gold.