Roy1 Posted December 7, 2019 Share Posted December 7, 2019 Moderately heavy rock ( not volcanic) with very rough surface, with interesting inclusions. Found in Osage River valley (an arm of Lake of the Ozarks) in Benton County, MISSOURI ( west central MO). If anyone has an idea what this is, I’ll send more pictures. Link to comment Share on other sites More sharing options...
Rockwood Posted December 7, 2019 Share Posted December 7, 2019 Tufa ? Link to comment Share on other sites More sharing options...
grandpa Posted December 7, 2019 Share Posted December 7, 2019 Well Roy, I'm seeing a couple of oysters on the right hand side of the matrix. As for the other 3 items, I don't know your area enough to proffer a speculation based on the partial preservation of these items. 1 Link to comment Share on other sites More sharing options...
Roy1 Posted December 7, 2019 Author Share Posted December 7, 2019 Thank you for that. I see them now that you mentioned them. The other on the left may be another from side-on. We are on the edge of the Ozark Highlands. I’m told the hills and valleys are due to erosion and not uplift. Link to comment Share on other sites More sharing options...
Roy1 Posted December 7, 2019 Author Share Posted December 7, 2019 2 hours ago, Rockwood said: Tufa ? Thanks. May be. It’s rough without being real porous. Link to comment Share on other sites More sharing options...
Ludwigia Posted December 7, 2019 Share Posted December 7, 2019 The rock looks very weathered, but maybe the reverse side can give us some more clues as to its make-up. Could you post a photo of it? Greetings from the Lake of Constance. Roger http://www.steinkern.de/ Link to comment Share on other sites More sharing options...
Roy1 Posted December 7, 2019 Author Share Posted December 7, 2019 Sure. Here it is. Link to comment Share on other sites More sharing options...
grandpa Posted December 7, 2019 Share Posted December 7, 2019 How fun! I think we have a coral on the reverse side. Can you provide a close-up of the lower left quarter of the specimen where the structure looks like coral cells? Link to comment Share on other sites More sharing options...
Roy1 Posted December 7, 2019 Author Share Posted December 7, 2019 Bottom side shows a break Link to comment Share on other sites More sharing options...
Roy1 Posted December 7, 2019 Author Share Posted December 7, 2019 Sure. Here it is Link to comment Share on other sites More sharing options...
Roy1 Posted December 7, 2019 Author Share Posted December 7, 2019 1 Link to comment Share on other sites More sharing options...
Rockwood Posted December 8, 2019 Share Posted December 8, 2019 I don't think that is coral. Rather I believe it to be inclusions of oolitic limestone. Link to comment Share on other sites More sharing options...
Jackson g Posted December 8, 2019 Share Posted December 8, 2019 I agree with @Rockwood, I don't think thats a coral either. The rock looks like a mix of hard, cherty limestone. I have found nice pieces I've kept with oolitic and druzy inclusions, just like yours. If I can remember I'll share one later on after work I've found in the area. Link to comment Share on other sites More sharing options...
Ludwigia Posted December 8, 2019 Share Posted December 8, 2019 Yes, I was thinking oolite as well now. Greetings from the Lake of Constance. Roger http://www.steinkern.de/ Link to comment Share on other sites More sharing options...
Roy1 Posted December 8, 2019 Author Share Posted December 8, 2019 Thanks to all for the information. I appreciate each of the responses. Now I’ll go google Oolite to learn more. Link to comment Share on other sites More sharing options...
Ludwigia Posted December 8, 2019 Share Posted December 8, 2019 1 hour ago, Roy1 said: Thanks to all for the information. I appreciate each of the responses. Now I’ll go google Oolite to learn more. There are a number of oolite types, but this looks like iron oolite to me. Greetings from the Lake of Constance. Roger http://www.steinkern.de/ Link to comment Share on other sites More sharing options...
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