Found this unusual stone on a mountain in central Thailand. From researching the net it may be a textite. Stone is quite heavy.  About 9cm x 8cm approximately 5cm thick. One side is rounded and pockmarked like it has been heated of dark brown color. Other side has long grains that come to a core in the center and shiny quartz like material layered in the grain. Any amateur geologists out there who could identify this stone? 

 

Petrified coral.

looks a little spongey.

 

 

http://skywalker.cochise.edu/wellerr/fossil/sponge/chaetetes1.htm

Browsing pics of petrified coral on the net doesn't match any photos. Plus how would petrified coral get on a mountain in the middle of nowhere central Thailand? Place found is at least 2 kilometers from the closest village, road or house.  

Was just searching on google "coral fossil Thailand" and the post I made on Thaivisa is listed already. 

17 minutes ago, Saraburi121 said:

Was just searching on google "coral fossil Thailand" and the post I made on Thaivisa is listed already. 

Must be true then... ????

It does look “woody and corally”

Tektites tend to be glassy, with no real internal structure.  The regular radial pattern in your photos looks like it was there before it lithified.  It might help to know which province it was found?  Much of central Thailand is composed of limestone, which was deposited in the sea, so it wouldn't be surprising to find marine fossils in it.

Just now, ballpoint said:

Tektites tend to be glassy, with no real internal structure.  The regular radial pattern in your photos looks like it was there before it lithified.  It might help to know which province it was found?  Much of central Thailand is composed of limestone, which was deposited in the sea, so it wouldn't be surprising to find marine fossils in it.

Found in Saraburi Province near the northern border with Nakhon Ratchasima. This is definitely limestone country which is why this stone found by its self seemed so out of place and didn't fit in. Need to do a little reading on the geology here, very interesting.  Agree it doesn't fit the characteristics of a tektite.

Hey guys LET'S go bar to watch girls!

No i go find some nice stone.

Petrified Palm tree Root Base

doesnt look to solid if you google petrified palms its all USA and beautifil when cut and polished 
if it is that then the fibrous nature of the palm takes on a basalt like shape but the cellulouse inner core the sponge

 

or looks like you found covid alien origins well done

Anyway here is your stone! Number 3

 

10 minutes ago, 2 is 1 said:

Hey guys LET'S go bar to watch girls!

No i go find some nice stone.

That rock is more animated than the girls in some bars ...

49 minutes ago, Saraburi121 said:

Found in Saraburi Province near the northern border with Nakhon Ratchasima. This is definitely limestone country which is why this stone found by its self seemed so out of place and didn't fit in. Need to do a little reading on the geology here, very interesting.  Agree it doesn't fit the characteristics of a tektite.

The DMR website is a good resource, with much of it in English.  You can download geological maps - covering the whole country as well as detailed ones of the provinces, and also the full 542 page English language book "Geology of Thailand".

http://www.dmr.go.th/index2018_en.php

 

There is a Thai fossilised coral - Lublinophyllum thailandicum, which does have a similar structure to yours, but I don't know enough about these to say if it is for sure.

 

 

 

 

It's Vayuraptor nongbualamphuensis poo from the Cretaceous period. If you find coffee beans in them then you are a rich man.

It's not a tektite.

What's the hardness? Can you scratch with a knife, if yes can you scratch with a copper coin, if yes try putting a drop of weak acid on it, if it fizzes it's calcareous and most likely as already suggested some sort of fossilised coral. You said it was found in 'limestone country' so a fossil coral would not be out of place.

Compare this foto.

Compare with op's pictures.