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DPChallenge Forums >> General Discussion >> Can you identify this rock?
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Showing posts 1 - 25 of 33, descending (reverse)
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09/04/2017 10:01:21 AM · #1
LOL!
09/04/2017 12:18:00 AM · #2
Hah! Shoot it again and stick it in the challenge :-)
09/03/2017 10:23:59 PM · #3
Originally posted by Art Roflmao:

Originally posted by scalvert:

Originally posted by Art Roflmao:

And geology is such a fast-evolving science. :P

The science is pretty much the same, but my memory... not so much. Back in my heyday, a North Carolina jeweler challenged people to ID 10 gemstones in a glass case. They were all uncommon items like iolite, spinel, and tsavorite, and there were no restrictions on who coud try, so a lot of other jewelers entered. I got 7 out of 10, and a couple I was friends with (both gemologists) got 8 out of 10. Nobody else did better than 4. I was 14 years old at the time.

Impressive. And yet you went on to become a... a... Well, not a jeweler or a geologist. :P :)


Drat... no discount on jewels?? sigh.
09/03/2017 10:17:17 PM · #4
Originally posted by scalvert:

Originally posted by Art Roflmao:

And geology is such a fast-evolving science. :P

The science is pretty much the same, but my memory... not so much. Back in my heyday, a North Carolina jeweler challenged people to ID 10 gemstones in a glass case. They were all uncommon items like iolite, spinel, and tsavorite, and there were no restrictions on who coud try, so a lot of other jewelers entered. I got 7 out of 10, and a couple I was friends with (both gemologists) got 8 out of 10. Nobody else did better than 4. I was 14 years old at the time.

Impressive. And yet you went on to become a... a... Well, not a jeweler or a geologist. :P :)
09/03/2017 11:03:12 AM · #5
Originally posted by Art Roflmao:

And geology is such a fast-evolving science. :P

The science is pretty much the same, but my memory... not so much. Back in my heyday, a North Carolina jeweler challenged people to ID 10 gemstones in a glass case. They were all uncommon items like iolite, spinel, and tsavorite, and there were no restrictions on who coud try, so a lot of other jewelers entered. I got 7 out of 10, and a couple I was friends with (both gemologists) got 8 out of 10. Nobody else did better than 4. I was 14 years old at the time.

Message edited by author 2017-09-03 11:13:56.
09/03/2017 11:01:28 AM · #6
Originally posted by vawendy:

Cory AND Shannon!! This is a good thread, indeed!

Either this rocks or there goes the neighborhood.
09/03/2017 09:34:30 AM · #7
Originally posted by scalvert:

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.


Cory AND Shannon!! This is a good thread, indeed!
09/03/2017 02:58:59 AM · #8
Originally posted by scalvert:

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.

And geology is such a fast-evolving science. :P
09/03/2017 02:38:58 AM · #9
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 Snaffles gave me the heads up on this thread, so thanks Susan!


You're welcome Cory! Wish you were back here too :-)
09/03/2017 01:24:19 AM · #10
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 01:12:27 AM · #11
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 Snaffles gave me the heads up on this thread, so thanks Susan!

Message edited by author 2017-09-03 01:27:51.
09/02/2017 10:35:58 PM · #12
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 :-)
09/02/2017 10:06:50 PM · #13
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 09:54:18 PM · #14
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 09:20:03 PM · #15
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 08:45:23 PM · #16
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 12:58:55 PM · #17
I read the title oh-so-very-wrong......
09/02/2017 09:06:31 AM · #18
Originally posted by Bear_Music:

Syas content isn't available...


seem to have a "rockblock" just now
09/01/2017 07:33:30 PM · #19
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 ... :-(
09/01/2017 06:40:07 PM · #20
Chlorite schist?
From a geologist
08/31/2017 06:15:56 PM · #21
haha, good stuff all, thanks! I'll google some of those words.
08/31/2017 05:20:43 PM · #22
I'd recognize it anywhere.

It's Fred!
08/31/2017 05:05:04 PM · #23
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 04:36:48 PM · #24
Yep.

It's a rock.
08/31/2017 04:02:01 PM · #25
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."
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