Mans Posted February 5 Share Posted February 5 Hi everyone From Jurassic , could it be a fossil?What are the gray lines? regards Link to comment Share on other sites More sharing options...
Geologyhound Posted February 5 Share Posted February 5 I am thinking some sort of coral. Do you happen to have any dilute hydrochloric acid (0.1M)? If you drip some on it and it fizzes, then it is a carbonate limestone. Vinegar is a much weaker acid but will form some bubbles over time on carbonate. See if any of the attached pictures look like it. 3 Link to comment Share on other sites More sharing options...
Mans Posted February 6 Author Share Posted February 6 Thanks Yes, they are Limestone , and the area according to the maps contains coral. 1 Link to comment Share on other sites More sharing options...
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