Plantgrogu Posted March 13, 2022 Share Posted March 13, 2022 Hi all! I found this egg shaped, non-magnetic, stone on the shoreline of Cayuga Lake in New York. It has a sandy, gritty texture and seems heavy for it's size. Being in an area where I find glacial deposits & till, identifying fossils and stones can be an adventure. Could this possibly be a very worn fossilized sponge or just another variety of interesting "holy rollers" washed up on shore. I find quite an assortment here. Please excuse the plant debris (small whitish fibers), I didn't want to scrub it too harshly. Link to comment Share on other sites More sharing options...
fifbrindacier Posted March 14, 2022 Share Posted March 14, 2022 Or maybe coral, this puzzles me. "On ne voit bien que par le coeur, l'essentiel est invisible pour les yeux." (Antoine de Saint-Exupéry) "We only well see with the heart, the essential is invisible for the eyes." In memory of Doren Link to comment Share on other sites More sharing options...
Plantgrogu Posted March 14, 2022 Author Share Posted March 14, 2022 (edited) 13 hours ago, fifbrindacier said: Or maybe coral, this puzzles me. I can't find any distinguishing patterns under magnification so I think it may be too weathered to be able to tell. I might talk to the fossil prep folks for some suggestions. I'm hoping to get a diamond blade set up to be able to slice interesting rocks that are too weathered on the surface but that obviously contain fossils. I wonder if this might be a good candidate to slice open and see what's inside It's such a cool egg shaped rock, I hate to cut it...lol Edited March 14, 2022 by Plantgrogu to add info 1 Link to comment Share on other sites More sharing options...
FranzBernhard Posted March 14, 2022 Share Posted March 14, 2022 2 hours ago, Plantgrogu said: I hate to cut it I understand this. You may take an angle grinder and grind a small flat area? Franz Bernhard 2 Link to comment Share on other sites More sharing options...
Plantgrogu Posted March 14, 2022 Author Share Posted March 14, 2022 1 hour ago, FranzBernhard said: I understand this. You may take an angle grinder and grind a small flat area? Franz Bernhard Ohhh, great idea! Better yet, I already have an angle grinder Thank you 1 Link to comment Share on other sites More sharing options...
fifbrindacier Posted March 15, 2022 Share Posted March 15, 2022 I'm impatient to see how it is inside. 1 "On ne voit bien que par le coeur, l'essentiel est invisible pour les yeux." (Antoine de Saint-Exupéry) "We only well see with the heart, the essential is invisible for the eyes." In memory of Doren Link to comment Share on other sites More sharing options...
Plantgrogu Posted March 15, 2022 Author Share Posted March 15, 2022 Thank you everyone for the tips and suggestions. I'll post what I find in grinding a small spot this weekend. Link to comment Share on other sites More sharing options...
SteveE Posted March 16, 2022 Share Posted March 16, 2022 I first learned about tufa a few days ago in another thread on this board. Could this be another example? Link to comment Share on other sites More sharing options...
Plantgrogu Posted March 18, 2022 Author Share Posted March 18, 2022 On 3/15/2022 at 9:20 PM, SteveE said: I first learned about tufa a few days ago in another thread on this board. Could this be another example? Very interesting! I've not heard of Tufa before and will read up on it. Thank you Link to comment Share on other sites More sharing options...
doushantuo Posted March 18, 2022 Share Posted March 18, 2022 (edited) consider this a reasonable introduction(6,61MB): Carbonate Precipitation in Mixed Cyanobacterial Biofilms Forming Freshwater Microbial Tufa Dahédrey Payandi-Rolland , Adeline Roche Emmanuelle Vennin , Pieter T. Visscher Philippe Amiotte-Suchet , Camille Thomas and Irina A. Bundeleva Minerals 2019, 9, 409; doi:10.3390/min9070409 minerals-09-00spcissu40payanditufa9-v2.pdf Edited March 18, 2022 by doushantuo 1 Link to comment Share on other sites More sharing options...
Plantgrogu Posted March 18, 2022 Author Share Posted March 18, 2022 24 minutes ago, doushantuo said: consider this a reasonable introduction(6,61MB): Carbonate Precipitation in Mixed Cyanobacterial Biofilms Forming Freshwater Microbial Tufa Dahédrey Payandi-Rolland , Adeline Roche Emmanuelle Vennin , Pieter T. Visscher Philippe Amiotte-Suchet , Camille Thomas and Irina A. Bundeleva Minerals 2019, 9, 409; doi:10.3390/min9070409 minerals-09-00spcissu40payanditufa9-v2.pdf 6.61 MB · 0 downloads Thank you!!!! I look forward to reading this Link to comment Share on other sites More sharing options...
Plantgrogu Posted March 25, 2022 Author Share Posted March 25, 2022 Hello all! Sorry for the delay. I used a Dremel and sanded down a small section which didn't reveal any identifiable details for me. I took a look at Tufa but am still not sure if this is Tufa as I couldn't find anything that would indicate that Tufa is native to this area. But, with many glacial deposits being found here, I can never rule anything out. Thank you all. I may sand it down further when I have time. Link to comment Share on other sites More sharing options...
Sagebrush Steve Posted March 25, 2022 Share Posted March 25, 2022 On 3/17/2022 at 10:26 PM, Plantgrogu said: Very interesting! I've not heard of Tufa before and will read up on it. Thank you Mono Lake in California is famous for its tufa formations: https://www.monolake.org/learn/aboutmonolake/naturalhistory/tufa/ 1 Link to comment Share on other sites More sharing options...
Plantgrogu Posted March 26, 2022 Author Share Posted March 26, 2022 1 hour ago, Sagebrush Steve said: Mono Lake in California is famous for its tufa formations: https://www.monolake.org/learn/aboutmonolake/naturalhistory/tufa/ Thank you! I'll check this out Link to comment Share on other sites More sharing options...
.thumb.png.1c89bcbea88f1e4d0c75a8d5cee8738f.png)
Recommended Posts
Create an account or sign in to comment
You need to be a member in order to leave a comment
Create an account
Sign up for a new account in our community. It's easy!
Register a new accountSign in
Already have an account? Sign in here.
Sign In Now