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Author Topic: Rock ID  (Read 3055 times)

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Offline Ryan Jacob

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

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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
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A hot cup of coffee and a beautiful sunrise

Offline Ryan Jacob

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Re: Rock ID
« Reply #2 on: March 28, 2018, 10:13:09 am »
I got it from Batangas, in the Philippines
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Offline bowmo

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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
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Offline mullet

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

Offline Ryan Jacob

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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...
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Offline Ryan Jacob

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Re: Rock ID
« Reply #6 on: March 28, 2018, 08:00:36 pm »
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Offline Chippintuff

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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
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Offline bjrogg

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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
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A hot cup of coffee and a beautiful sunrise

Offline RickB

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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
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Offline mullet

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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.
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Lakeland, Florida
 If you have to pull the trigger, is it really archery?

Offline Ryan Jacob

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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
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Offline Ryan Jacob

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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
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Offline mullet

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Re: Rock ID
« Reply #13 on: March 31, 2018, 09:06:50 am »
Gneiss. ;)
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Lakeland, Florida
 If you have to pull the trigger, is it really archery?
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