|
Post by snowmom on Jun 19, 2014 8:25:57 GMT -5
found this approx. 6x6 inch piece over the weekend. black matrix is worn to blue grey on one side. Looking closer the large white blob has some form inside, maybe a jelly fish? My rotten camera won't take close ups but the photobucket viewer will let you enlarge it somewhat. not the usual sort of stuff we find here, jellyfish or not.
|
|
Fossilman
Cave Dweller
Member since January 2009
Posts: 20,688
|
Post by Fossilman on Jun 19, 2014 8:32:50 GMT -5
Odd rock.....From the photo,I'm thinking some sort of agate in a host rock...It's cool though...You going to cut it,or shave it?
|
|
Sabre52
Cave Dweller
Me and my gal, Rosie
Member since August 2005
Posts: 20,472
|
Post by Sabre52 on Jun 19, 2014 8:39:41 GMT -5
Jellyfish bodies being all soft stuff, are pretty rare as fossils. What you have there is a conglomerate of some kind with maybe quartz fragments included.....Mel
|
|
|
Post by snowmom on Jun 19, 2014 10:17:16 GMT -5
hmmm was thinking it was fossils because I also find fossils in black matrix on this beach but as you can see there is a lot of other stuff there, too, I found some outstanding breccia which is not black matrix based over the weekend as well as this piece. Finding stuff in the Lake makes hounding a whole different thing. I can only take what it offers and I never know more than that the glaciers brought it from the north. This is a photo of the other side of the rock, note all the little eye like things I thought were fossil critters of some sort. Oolites maybe? so oolitic base stuff with breccia? I can live with that!
|
|
junglejim
spending too much on rocks
Member since January 2014
Posts: 344
|
Post by junglejim on Jun 19, 2014 11:16:03 GMT -5
Very nice beach finds. Wonder how far the nearest beach is from Saint Louis.
|
|
|
Post by snowmom on Jun 19, 2014 11:30:42 GMT -5
St Louis has some great stuff to find in that area... We lived for a few years in southern IL right across from StL, Fossils (especially mammoth-or was it Mastadon? ) just south of you, arrowheads in farm fields (check around Mascoutah, arrowsmith and Belleville IL, think about the regions near Cahokia mounds, look for geodes, Look across the river a little farther south in IL where the glaciers did not go, oh, and the river will have lots of rocky places, especially where the streams feed into it. Nice thing is we all have good stuff in our areas and there are flat rate boxes available for trades! : )
|
|
|
Post by snowmom on Jun 19, 2014 11:37:04 GMT -5
I was looking at that picture again and it dawned on me- porphyritic breccia or conglomerate- not oolitic. Try as I might I can not see little animal bodies in those specks of stuff. and the circular stuff is not really circular... I swear I am going to learn all this stuff.
Maybe polishing it up a bit would make everything clearer. Cut or shave?? hmmmm (thinking)
|
|
azgnoinc
spending too much on rocks
Member since March 2014
Posts: 484
|
Post by azgnoinc on Jun 23, 2014 20:09:29 GMT -5
Very cool finds for a trip to the beach!!
|
|
donkeyrokman
noticing nice landscape pebbles
Member since June 2014
Posts: 78
|
Post by donkeyrokman on Jun 27, 2014 10:53:42 GMT -5
I was looking at that picture again and it dawned on me- porphyritic breccia or conglomerate- not oolitic. Try as I might I can not see little animal bodies in those specks of stuff. and the circular stuff is not really circular... I swear I am going to learn all this stuff. Maybe polishing it up a bit would make everything clearer. Cut or shave?? hmmmm (thinking) That was my first thought too. Porphyritic conglomerate.
|
|
|
Post by snowmom on Nov 10, 2014 7:11:51 GMT -5
blast from the past revisited in light of new info, the top rock pictured is a great match for photos of onaping melt glass from Sudbury meteor impact. I face polished it over the summer and it is black or dark grey matrix with grey, pink and white inclusions- very pretty! Also very heavy and dense. now I know the rest of the story. Who would think of meteor impactite???
|
|
jamesp
Cave Dweller
Member since October 2012
Posts: 36,186
|
Post by jamesp on Nov 10, 2014 9:00:50 GMT -5
blast from the past revisited in light of new info, the top rock pictured is a great match for photos of onaping melt glass from Sudbury meteor impact. I face polished it over the summer and it is black or dark grey matrix with grey, pink and white inclusions- very pretty! Also very heavy and dense. now I know the rest of the story. Who would think of meteor impactite??? There is a meteor impact near Montgomery Alabama. It is 7 miles across. The geologists could tell that the quartz had been altered. It apparently hit the river and pushed water worn pebbles up into hills and they serve as gravel pits.
|
|
|
Post by snowmom on Nov 10, 2014 17:32:29 GMT -5
Have you ever looked for impact rocks, melt rocks, or other impact debris? Does the meteor crater have a name? They seem to be finding these all over now there is technology and a system for identifying them, even after they have long ago eroded and surface signs mostly disappeared. pretty cool!
|
|
|
Post by gingerkid on Nov 12, 2014 17:06:47 GMT -5
Hi, snowmom! Very nice finds!! What are the fossils in the black matrix that look similar to Chinese Writing stone? The Wetumpka impact crater in 'Bama is the one that jamesp mentioned and visited. Here's a pic of the shocked quartz from the crater. From what I understand, the shocked quartz is an indicator of impact. Here's a piece of shocked quartz from Wetumpka that I acquired from @rocks2dust a while back.
|
|
|
Post by snowmom on Nov 12, 2014 17:23:03 GMT -5
wow, wish I could touch that Jan, it surely does look shocked! like it has been shattered and then somehow stuck all back together again. Very cool! Thanks for showing that. anybody else have impact rocks? I wanna see 'em!
|
|
|
Post by gingerkid on Nov 12, 2014 17:28:53 GMT -5
Thanks, Deb!
Where is the green impact glass from that Ed created your beautiful rockin' heart with?
|
|
|
Post by snowmom on Nov 12, 2014 17:57:49 GMT -5
That is Sudbury impact glass too, from a local beach, Azgnoinc cut it for me recently, and it wasn't until I learned about the Sudbury impact and saw photos of other Sudbury impact glass that I realized what it was!
|
|
Deleted
Deleted Member
Member since January 1970
Posts: 0
|
Post by Deleted on Nov 12, 2014 18:07:13 GMT -5
Do the things in your stone look anything like what is in this stone? I should set up and take some better photos of this thing. There are round things with little squiggly legs in it that almost look like they are alive. Jim
|
|
jamesp
Cave Dweller
Member since October 2012
Posts: 36,186
|
Post by jamesp on Nov 12, 2014 19:10:19 GMT -5
Those may be bryozoans Jim.Pretty sure of it. Great fossils.
|
|
Deleted
Deleted Member
Member since January 1970
Posts: 0
|
Post by Deleted on Nov 12, 2014 19:45:01 GMT -5
Thanks James. I been wonderin. Jim
|
|
|
Post by snowmom on Nov 13, 2014 6:13:58 GMT -5
I concur, fossils, beautiful ones! Jim, Ed (mr.mohs) put an enlarged photo of the piece of melt glass he used on a different thread. You can see all the melted rock forms in it. he says it was good stuff to work with. forum.rocktumblinghobby.com/thread/68440/thank-mohs?page=1&scrollTo=777439 I am grateful for that photo since my camera does not allow clear closeups like that and photos I get with it are usually overexposed. Gotta work on that now cold weather is setting in. At least I can try to control the overexposed part even if I can't get too close.
|
|