bcrockhound
spending too much on rocks
Member since June 2014
Posts: 418
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Post by bcrockhound on Jul 22, 2018 19:47:33 GMT -5
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surreality
starting to spend too much on rocks
is picking up too many rocks at the beach again
Member since January 2012
Posts: 217
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Post by surreality on Jul 23, 2018 4:49:43 GMT -5
#1: Hello, fellow mac person!
#2: While I'm not the best at IDs, some of these look similar to things we find on the beach here. Definitely 1 and 2, and the last image. Beyond 'fossil coral', which is what image 2 seems to be, all I can really offer is that a similar piece to the last was ID'd as some kind of beach flint with fossil inclusions a handful of years back, with a 'jasper, flint, or chert' on a piece similar to the first.
Which narrows it down almost none, I know, but shoreline collecting becomes an exercise in trying to figure out how things got there, and from where, since it's as likely it came from somewhere else via glacier or currents than it is truly local. (We've found fragments of something over the years that looks identical to a Rio Agate someone posted today on a beach in New Jersey, for instance. I am dying to know how that happened!)
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Post by fernwood on Jul 23, 2018 6:22:21 GMT -5
1. reminds me of an oyster in the half shell. 2. A Honeycomb Coral? 3,4. Appear to contain some shell fragments. 5,6. Look like agates. 7. Might be Carnelian or Citrine. 8. Trace fossil and/or stromatolite?
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Post by adam on Jul 23, 2018 7:07:06 GMT -5
I'm not keen on the geology of areas outside Kentucky, but #2 looks like fossilized coral, or sponge. I'm leaning more toward it being a sponge. Looks like specimens I brought home a few weeks ago from a river cutting through Devonian age strata.
#5 is definitely agate. Looks like it has a volcanic origin IMO, and not sedimentary. I could be wrong.
#6 looks like red jasper with a couple veins of agate in it, should be a good piece to tumble.
#7 looks like citrine, not carnelian. The surface is a dead give-away. Carnelian without any crystals would have more of a glossy appearance. Looks like any visible crystals on the specimen were weathered away. I don't know about putting it in a tumbler, though, as it may look more pretty the way it is.
The others, I'm not so sure.
Edit: pics #3 and #4 are the same, right? Some of the visible crystals could be pyrite. That's all I got.
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bcrockhound
spending too much on rocks
Member since June 2014
Posts: 418
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Post by bcrockhound on Jul 23, 2018 8:32:46 GMT -5
I'm not keen on the geology of areas outside Kentucky, but #2 looks like fossilized coral, or sponge. I'm leaning more toward it being a sponge. Looks like specimens I brought home a few weeks ago from a river cutting through Devonian age strata. #5 is definitely agate. Looks like it has a volcanic origin IMO, and not sedimentary. I could be wrong. #6 looks like red jasper with a couple veins of agate in it, should be a good piece to tumble. #7 looks like citrine, not carnelian. The surface is a dead give-away. Carnelian without any crystals would have more of a glossy appearance. Looks like any visible crystals on the specimen were weathered away. I don't know about putting it in a tumbler, though, as it may look more pretty the way it is. The others, I'm not so sure. Edit: pics #3 and #4 are the same, right? Some of the visible crystals could be pyrite. That's all I got. Thank you to everybody! Yes, pics 3 and 4 are the same. I thought it was pyrite too. A few of her finds, like that one, are markedly heavier than the other rocks. Interesting about citrine, hadn't considered that and originally thought it was a non-banded agate, but you're likely right. Lots of opportunity up there and I'm trying to justify a work trip to the region myself. Town of 75 people nowhere close to anyone else, on an island of their own. I know people have found petrified wood and amber nearby as well. I salivate at hounding in such an untouched area!
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Post by pauls on Jul 23, 2018 16:20:29 GMT -5
Some guesses. Good you mentioned Amber because thats the first thing I thought of for that yellow one, is it really light (not heavy). 1. could be a piece of any old thing. Schist, pet wood, jasper? 2. Sure looks like a coral. 3,4. look to be Quartz with some kind of metal ore or Pyrite. 5. Agate 6. Agate 7. Amber or Agate/Carnelian, citrine 8. leaverite, nah sorry no idea.
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