Please help ID found near Needle Point, Brewster County, Texas

[charly 0]

Purple and red and orange striations, very dull luster, thanks for your help!

[Stillweaver hillbelli 346]

Hardness? No scale to judge size.

W A G , it' rhyolite that's been metamorphosed.

[Stillweaver hillbelli 346]

Might be agate. Wiki has a page on it.

[Stillweaver hillbelli 346]

Looks like your rock. Calling  it ,"Hickoryite Jasper", final answer

https://www.etsy.com/listing/888003390/polished-hickoryite-rhyolite-wonder?ga_order=most_relevant&ga_search_type=all&ga_view_type=gallery&ga_search_query=rhyolite+agate&ref=sr_gallery-1-9&frs=1

Edited December 19, 2020 by Stillweaver hillbelli

[Bedrock Bob 4,180]

It's somewhere between quartz and jasper. The crystals look pretty big for jasper but it is obviously banding and flowing like a jasper.

It is a form of silicon dioxide that formed under some pressure and not at the surface. It is not microcrystalline like a jasper but it looks like it is close.

I call rocks like that quartzite. But that may not be the best description for that particular form of silicate rock. 

 

 

[d_day 357]

This could be so many things. It’s too hard to tell exactly what it is from just pictures. 

I think Bob may be on to something with the quartzite. It does have the appearance of quartzite, which is a metamorphosed quartz sandstone. 

It also looks like it could be a fairly grainy chert. 
 

It could be a number of other things with staining from chemical weathering.

[Stillweaver hillbelli 346]

https://www.mindat.org/loc-27375.html

[Bedrock Bob 4,180]

It's hematite. Rub it under the lid of the toilet tank.