« previous next »
Pages: [1]

Author Topic: Rock ID  (Read 3059 times)

0 Members and 1 Guest are viewing this topic.

Offline Ryan Jacob

  • Member
  • Posts: 427
Rock ID
« on: March 28, 2018, 12:22:15 am »
Anyone have any ideas on exactly what it is?
https://imgur.com/a/7mZLk
Logged

Offline bjrogg

  • Member
  • Posts: 11,017
  • Cedar Pond
Re: Rock ID
« Reply #1 on: March 28, 2018, 06:11:22 am »
Ryan I'm not a rock expert, but it looks knapable from my phone. Hopefully someone else more schooled in rock will help you out here. Might help if they knew what region you got it from. You can PM me the exact coordinates.lol.
Hope you get some nice points from it.
Bjrogg
Logged
A hot cup of coffee and a beautiful sunrise

Offline Ryan Jacob

  • Member
  • Posts: 427
Re: Rock ID
« Reply #2 on: March 28, 2018, 10:13:09 am »
I got it from Batangas, in the Philippines
Logged

Offline bowmo

  • Member
  • Posts: 1,035
Re: Rock ID
« Reply #3 on: March 28, 2018, 12:20:51 pm »
No clue. Reminds me of black and white nova but clearly isn't. Certainly knappable which is better than knowing the name...haha
Logged

Offline mullet

  • Global Moderator
  • Member
  • Posts: 22,911
  • Eddie Parker
Re: Rock ID
« Reply #4 on: March 28, 2018, 05:48:52 pm »
To me it looks like a low grade Dacite or Gneiss.
Logged
Lakeland, Florida
 If you have to pull the trigger, is it really archery?

Offline Ryan Jacob

  • Member
  • Posts: 427
Re: Rock ID
« Reply #5 on: March 28, 2018, 07:58:02 pm »
Mullet
If it is low grade dacite, should I heat treat it? Spalls real easy however...
Logged

Offline Ryan Jacob

  • Member
  • Posts: 427
Re: Rock ID
« Reply #6 on: March 28, 2018, 08:00:36 pm »
Logged

Offline Chippintuff

  • Member
  • Posts: 777
Re: Rock ID
« Reply #7 on: March 28, 2018, 08:11:50 pm »
Heat won't make glass products chip any better. If it is low grade dacite, I think it may have ash crumbs in it. Those can cause trouble.

WA
Logged

Offline bjrogg

  • Member
  • Posts: 11,017
  • Cedar Pond
Re: Rock ID
« Reply #8 on: March 29, 2018, 05:46:46 am »
looks like some pretty decent spalls to me. I would give it a try. looks better than anything I find around here.
Bjrogg
Logged
A hot cup of coffee and a beautiful sunrise

Offline RickB

  • Member
  • Posts: 301
Re: Rock ID
« Reply #9 on: March 29, 2018, 06:51:54 am »
Quote from: Ryan Jacob on March 28, 2018, 08:00:36 pm
Some spalls
 https://imgur.com/a/HoaH6

This last photo you posted shows a coral nodule mixed in with the spalls - it's located on the upper right side of the photo. I can see the polyps. Rick B
Logged

Offline mullet

  • Global Moderator
  • Member
  • Posts: 22,911
  • Eddie Parker
Re: Rock ID
« Reply #10 on: March 29, 2018, 05:08:58 pm »
Rick, those do look like polyps. I've never seen coral like that, though. I'd say whack on it and see if it works, no heat.
Logged
Lakeland, Florida
 If you have to pull the trigger, is it really archery?

Offline Ryan Jacob

  • Member
  • Posts: 427
Re: Rock ID
« Reply #11 on: March 29, 2018, 08:21:53 pm »
It’s not a nodule, It’s just the empty shell of a dead coral, lots of them around here
Logged

Offline Ryan Jacob

  • Member
  • Posts: 427
Re: Rock ID
« Reply #12 on: March 30, 2018, 11:26:25 pm »
Yeah, lesson learned, don’t try to knap stuff with this many inclusions, knaps like concrete and the flakes dont travel
Logged

Offline mullet

  • Global Moderator
  • Member
  • Posts: 22,911
  • Eddie Parker
Re: Rock ID
« Reply #13 on: March 31, 2018, 09:06:50 am »
Gneiss. ;)
Logged
Lakeland, Florida
 If you have to pull the trigger, is it really archery?
Pages: [1]
« previous next »