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DPChallenge Forums >> General Discussion >> Can you identify this rock?
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08/30/2017 10:32:43 PM · #1
I know there used to be some geologists on here....

Digging around my house to put in a french drain and pulled some behemoth rocks out.
Not the greatest pictures and I know this rock is nothing special but I liked the way it looked like it almost has layers and was wondering if someone could tell me what kind of rock it is?

Shot 1

Shot 2

08/30/2017 11:51:41 PM · #2
Syas content isn't available...
08/31/2017 12:55:48 AM · #3
Originally posted by Bear_Music:

Syas content isn't available...


Sorry, how about now?
08/31/2017 02:32:40 AM · #4
Perhaps a gneiss?

(Given the striping)
08/31/2017 03:28:47 AM · #5
looks like a large tan to me
08/31/2017 02:33:59 PM · #6
Originally posted by Tiny:

looks like a large tan to me


Dunno, could also be a medium beige...

Wish I had more to offer. I think our resident geologist has left the building.
08/31/2017 03:21:18 PM · #7
Not sure but it looks to contain lots of iron
ferriferous sandstone
08/31/2017 03:49:50 PM · #8
They're really pretty!
08/31/2017 04:02:01 PM · #9
I got this answer from a deniable source:

"I'll take a wild stab at it. It's not easy with just a photo. In the old days I would actually employ taste and smell, sometimes. My gut reaction is Mylonite Schist, with some later fluids percolating through, leaving some calcite(?) veining along shear planes."
08/31/2017 04:36:48 PM · #10
Yep.

It's a rock.
08/31/2017 05:05:04 PM · #11
Originally posted by Art Roflmao:

I got this answer from a deniable source:

"I'll take a wild stab at it. It's not easy with just a photo. In the old days I would actually employ taste and smell, sometimes. My gut reaction is Mylonite Schist, with some later fluids percolating through, leaving some calcite(?) veining along shear planes."


Somehow I knew this thread would take a schist ;-)
08/31/2017 05:20:43 PM · #12
I'd recognize it anywhere.

It's Fred!
08/31/2017 06:15:56 PM · #13
haha, good stuff all, thanks! I'll google some of those words.
09/01/2017 06:40:07 PM · #14
Chlorite schist?
From a geologist
09/01/2017 07:33:30 PM · #15
Originally posted by kirbic:

Originally posted by Art Roflmao:

I got this answer from a deniable source:

"I'll take a wild stab at it. It's not easy with just a photo. In the old days I would actually employ taste and smell, sometimes. My gut reaction is Mylonite Schist, with some later fluids percolating through, leaving some calcite(?) veining along shear planes."


Somehow I knew this thread would take a schist ;-)

OK, I'll granite -- you're the first with a geologic pun ... :-(
09/02/2017 09:06:31 AM · #16
Originally posted by Bear_Music:

Syas content isn't available...


seem to have a "rockblock" just now
09/02/2017 12:58:55 PM · #17
I read the title oh-so-very-wrong......
09/02/2017 08:45:23 PM · #18
Drum roll please...

LOL.

The furthest I can go with any authority is that this appears to be a clay rich metamorphic rock, with likely later solution transport through fractures. : No significant value, but a very cool rock. Nice find.
09/02/2017 09:20:03 PM · #19
Originally posted by Cory:

Drum roll please...

LOL.

The furthest I can go with any authority is that this appears to be a clay rich metamorphic rock, with likely later solution transport through fractures. : No significant value, but a very cool rock. Nice find.


Hi Cory!! I was wondering where you were -- I was hoping you'd show up for this one. Miss you!
09/02/2017 09:54:18 PM · #20
Originally posted by vawendy:

Originally posted by Cory:

Drum roll please...

LOL.

The furthest I can go with any authority is that this appears to be a clay rich metamorphic rock, with likely later solution transport through fractures. : No significant value, but a very cool rock. Nice find.


Hi Cory!! I was wondering where you were -- I was hoping you'd show up for this one. Miss you!


Miss you too!

I'm just so busy with other stuff I rarely photograph anything any more. *shrug*

Miss ALL of you SO much.
09/02/2017 10:06:50 PM · #21
Originally posted by Cory:

Originally posted by vawendy:

Originally posted by Cory:

Drum roll please...

LOL.

The furthest I can go with any authority is that this appears to be a clay rich metamorphic rock, with likely later solution transport through fractures. : No significant value, but a very cool rock. Nice find.


Hi Cory!! I was wondering where you were -- I was hoping you'd show up for this one. Miss you!


Miss you too!

I'm just so busy with other stuff I rarely photograph anything any more. *shrug*

Miss ALL of you SO much.


I know how to fix that... :D
09/02/2017 10:35:58 PM · #22
Originally posted by vawendy:

Originally posted by Cory:

Originally posted by vawendy:

Originally posted by Cory:

Drum roll please...

LOL.

The furthest I can go with any authority is that this appears to be a clay rich metamorphic rock, with likely later solution transport through fractures. : No significant value, but a very cool rock. Nice find.


Hi Cory!! I was wondering where you were -- I was hoping you'd show up for this one. Miss you!

Miss you too!

I'm just so busy with other stuff I rarely photograph anything any more. *shrug*

Miss ALL of you SO much.

I know how to fix that... :D

What she said. Just make it habitual to pop in for 30 minutes twice a week and make a few posts and we'll be good to go :-)
09/03/2017 01:12:27 AM · #23
Originally posted by Bear_Music:

Originally posted by vawendy:


I know how to fix that... :D

What she said. Just make it habitual to pop in for 30 minutes twice a week and make a few posts and we'll be good to go :-)


Well, I really should. I should actually take photos again sometime..

And 21_F.gif Snaffles gave me the heads up on this thread, so thanks Susan!

Message edited by author 2017-09-03 01:27:51.
09/03/2017 01:24:19 AM · #24
My guess is a yellow quartzite, but I was waiting to see if Cory would show up with an expert opinion. It's been decades since my days of instant rock ID.
09/03/2017 02:38:58 AM · #25
Originally posted by Cory:

Originally posted by Bear_Music:

Originally posted by vawendy:


I know how to fix that... :D

What she said. Just make it habitual to pop in for 30 minutes twice a week and make a few posts and we'll be good to go :-)


Well, I really should. I should actually take photos again sometime..

And 21_F.gif Snaffles gave me the heads up on this thread, so thanks Susan!


You're welcome Cory! Wish you were back here too :-)
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