« previous next »
Pages: [1]

Author Topic: what rock is this?  (Read 3387 times)

0 Members and 1 Guest are viewing this topic.

Offline le0n

  • Member
  • Posts: 540
what rock is this?
« on: April 19, 2016, 09:51:45 pm »
i picked one piece up from a rock shop in Marfa, Tx.

the shop owner didn't know what it was. he even questioned if it was synthetic.

it looked knappable, so i brought it back with me.











in the sunlight, it looks sort of like gray plastic.

thanks in advance.
Logged

Offline turbo

  • Member
  • Posts: 130
Re: what rock is this?
« Reply #1 on: April 19, 2016, 11:47:16 pm »
The second picture onward look like Novaculite to my eyes.
Logged

Offline le0n

  • Member
  • Posts: 540
Re: what rock is this?
« Reply #2 on: April 19, 2016, 11:59:26 pm »
^^ Thanks.

It knaps like dacite, but those red veins just come apart when you look at them.

I tried to get some vein-free flakes, but it just wasn't happening. I'll most likely just leave it alone and focus my time elsewhere.

Logged

Offline caveman2533

  • Member
  • Posts: 640
  • Steve Nissly
Re: what rock is this?
« Reply #3 on: April 20, 2016, 09:02:12 am »
It looks like grey novaculite to me also.
Logged

Offline JoJoDapyro

  • Member
  • Posts: 2,504
  • Subscription Number PM109294
Re: what rock is this?
« Reply #4 on: April 20, 2016, 10:06:55 am »
Looks like a good time!
Logged
If you always do what you always did you'll always get what you always got.
27 inch draw, right handed. Bow building and Knapping.

Offline le0n

  • Member
  • Posts: 540
Re: what rock is this?
« Reply #5 on: April 20, 2016, 10:40:47 am »
^^ thanks.

i can get small flakes/points from it, so i may save it for when i'm really rock poor.
Logged

Offline JoJoDapyro

  • Member
  • Posts: 2,504
  • Subscription Number PM109294
Re: what rock is this?
« Reply #6 on: April 20, 2016, 10:59:51 am »
I'm always rock poor, so I would already have it destroyed.  ;D
Logged
If you always do what you always did you'll always get what you always got.
27 inch draw, right handed. Bow building and Knapping.

Offline crooketarrow

  • Member
  • Posts: 2,790
Re: what rock is this?
« Reply #7 on: April 20, 2016, 09:16:41 pm »
   Those cracks are from water and freezing some where through time.
Logged
DEAD IS DEAD NO MATTER HOW FAST YOUR ARROW GETS THERE
20 YEARS OF DOING 20 YEARS OF LEARNING 20 YEARS OF TEACHING

Offline Tower

  • Member
  • Posts: 2,303
Re: what rock is this?
« Reply #8 on: April 20, 2016, 11:23:41 pm »
That's TX Chert. 
It's a variant of Edwards.   It should take heat very well. 
Logged
He who sacrifices freedom for a security deserves neither one.  Benjamin Franklin!

Offline le0n

  • Member
  • Posts: 540
Re: what rock is this?
« Reply #9 on: April 21, 2016, 02:15:29 am »
Quote from: Tower on April 20, 2016, 11:23:41 pm
That's TX Chert. 
It's a variant of Edwards.   It should take heat very well.

i just googled that and found a photo of one made from this material:


that looks exactly like the stuff 8)

thanks.
Logged

Offline le0n

  • Member
  • Posts: 540
Re: what rock is this?
« Reply #10 on: April 21, 2016, 09:57:22 pm »
instead of making a new thread, can i post another rock for identification?

i knocked a slab off of it earlier; but thinking i should probably save this stuff until i have time to treat it.

edit: after searching around online, it appears to be a rhyolite. if so, i don't have to wait to heat treat it, hah hah.





i tried flaking a small chubby piece to see how it acted. it's very tough and the flakes almost fracture into powder as they run.


but the edge remains very strong and sharp.
« Last Edit: April 22, 2016, 01:03:31 am by le0n »
Logged
Pages: [1]
« previous next »