KingSepron Posted January 25, 2020 Share Posted January 25, 2020 Found at Lulworth Cove, a Jurassic area Link to comment Share on other sites More sharing options...
KingSepron Posted January 25, 2020 Author Share Posted January 25, 2020 Zoomed in on the sides Link to comment Share on other sites More sharing options...
KingSepron Posted January 25, 2020 Author Share Posted January 25, 2020 Zoomed in on the ends Link to comment Share on other sites More sharing options...
Tidgy's Dad Posted January 25, 2020 Share Posted January 25, 2020 Fossil wood, I think. Lulworth Cove is renowned for this and I have some similar looking bits myself. 2 Life's Good! Tortoise Friend. Link to comment Share on other sites More sharing options...
KingSepron Posted January 25, 2020 Author Share Posted January 25, 2020 I got a few other pieces from there too 1 Link to comment Share on other sites More sharing options...
Tidgy's Dad Posted January 25, 2020 Share Posted January 25, 2020 Booooooooooooo!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! Here is my ruler. (Not fossil wood.) Life's Good! Tortoise Friend. Link to comment Share on other sites More sharing options...
KingSepron Posted January 25, 2020 Author Share Posted January 25, 2020 25 minutes ago, Tidgy's Dad said: Booooooooooooo!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! Here is my ruler. (Not fossil wood.) I'm not even that into football, it's just the only ruler I have on my desk 1 Link to comment Share on other sites More sharing options...
TqB Posted January 25, 2020 Share Posted January 25, 2020 I think the pieces look like fibrous calcite - there's a lot of thick fibrous calcite ("beef") in the Purbeck formation around there 3 Tarquin Link to comment Share on other sites More sharing options...
Tidgy's Dad Posted January 25, 2020 Share Posted January 25, 2020 1 hour ago, TqB said: I think the pieces look like fibrous calcite - there's a lot of thick fibrous calcite ("beef") in the Purbeck formation around there True. One of the members of said formation is the Chief Beef Member and beef occurs in other parts too. A vinegar test may help. King Sepron, drop some vinegar on it. If it fizzes slightly, it is probably calcite beef. If it doesn't fizz it maybe petrified wood. Or something else. 2 Life's Good! Tortoise Friend. Link to comment Share on other sites More sharing options...
KingSepron Posted January 25, 2020 Author Share Posted January 25, 2020 Just now, Tidgy's Dad said: True. One of the members of said formation is the Chief Beef Member and it occurs elsewhere. A vinegar test may help. King Sepron, drop some vinegar on it. If it fizzes slightly, it is probably calcite beef. If it doesn't fizz it maybe petrified wood. Or something else. Will do! Link to comment Share on other sites More sharing options...
KingSepron Posted January 25, 2020 Author Share Posted January 25, 2020 55 minutes ago, Tidgy's Dad said: True. One of the members of said formation is the Chief Beef Member and beef occurs in other parts too. A vinegar test may help. King Sepron, drop some vinegar on it. If it fizzes slightly, it is probably calcite beef. If it doesn't fizz it maybe petrified wood. Or something else. No fizz Link to comment Share on other sites More sharing options...
Tidgy's Dad Posted January 25, 2020 Share Posted January 25, 2020 What about hardness? I don't mean crumbling or fragility but can you scratch it with a pocket knife blade? Life's Good! Tortoise Friend. Link to comment Share on other sites More sharing options...
KingSepron Posted January 25, 2020 Author Share Posted January 25, 2020 30 minutes ago, Tidgy's Dad said: What about hardness? I don't mean crumbling or fragility but can you scratch it with a pocket knife blade? I managed to scratch it with a bread knife Link to comment Share on other sites More sharing options...
Tidgy's Dad Posted January 25, 2020 Share Posted January 25, 2020 Hmmm. How odd. Life's Good! Tortoise Friend. Link to comment Share on other sites More sharing options...
KingSepron Posted January 25, 2020 Author Share Posted January 25, 2020 10 minutes ago, Tidgy's Dad said: Hmmm. How odd. I’d imagine you could scratch a normal fossil with a bread knife, no? Link to comment Share on other sites More sharing options...
Tidgy's Dad Posted January 25, 2020 Share Posted January 25, 2020 1 hour ago, KingSepron said: I’d imagine you could scratch a normal fossil with a bread knife, no? Well, erm, not necessarily, a lot of rocks and fossils will have a hardness of quartz, about 7 on the Mohs hardness scale. I would have thought most petrified wood would have a hardness of around that. Calcite has a hardness of 3 and can be scratched by a standard pen knife blade which has a hardness of about 5.5. Depends on the hardness of your kitchen knife, i guess. Life's Good! Tortoise Friend. Link to comment Share on other sites More sharing options...
KingSepron Posted January 25, 2020 Author Share Posted January 25, 2020 Just now, Tidgy's Dad said: Well, erm, not necessarily, a lot of rocks and fossils will have a hardness of quartz, about 7 on the Mohs hardness scale. I would have thought most petrified wood would have a hardness of around that. Calcite has a hardness of 3 and can be scratched by a standard pen knife blade which has a hardness of about 5.5. Depends on the hardness of your kitchen knife, i guess. I’ll dig out my pen knife Link to comment Share on other sites More sharing options...
KingSepron Posted January 25, 2020 Author Share Posted January 25, 2020 I have no idea where my pen knife is, but i just caught my dog chewing it and she didn’t scratch it if that’s any help 6 minutes ago, Tidgy's Dad said: Well, erm, not necessarily, a lot of rocks and fossils will have a hardness of quartz, about 7 on the Mohs hardness scale. I would have thought most petrified wood would have a hardness of around that. Calcite has a hardness of 3 and can be scratched by a standard pen knife blade which has a hardness of about 5.5. Depends on the hardness of your kitchen knife, i guess. Link to comment Share on other sites More sharing options...
KingSepron Posted January 25, 2020 Author Share Posted January 25, 2020 1 hour ago, Tidgy's Dad said: Well, erm, not necessarily, a lot of rocks and fossils will have a hardness of quartz, about 7 on the Mohs hardness scale. I would have thought most petrified wood would have a hardness of around that. Calcite has a hardness of 3 and can be scratched by a standard pen knife blade which has a hardness of about 5.5. Depends on the hardness of your kitchen knife, i guess. I managed to scratch it with a ruler with some effort Link to comment Share on other sites More sharing options...
KingSepron Posted January 25, 2020 Author Share Posted January 25, 2020 I’ve come to the conclusion that it’s probably calcite, but on the bright side my dog loves being around it so it’s become hers now! 1 Link to comment Share on other sites More sharing options...
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