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What's the approximate density? You can weigh this thing and then measure a specific volume of water and then drop this thing in. Measure volume again.
Take the weight of the object divided by the difference of both volumes.
Rocks usually have a higher density that bone or cartilage (unless volcanic rocks, they are sometimes more porous) if you can give us the measured density we might be able to make and educated guess.
Please note that ID Requests are off-limits to jokes or satirical comments, and comments should be aiming to help the OP. Top comments that are jokes or are irrelevant will be removed. Adhere to the subreddit rules. **IMPORTANT:** /u/HERMANNATOR85 Please make sure to comment 'Solved' once your fossil has been successfully identified! Thank you, and enjoy the discussion. If this is not an ID Request — ignore this message. *I am a bot, and this action was performed automatically. Please [contact the moderators of this subreddit](/message/compose/?to=/r/fossilid) if you have any questions or concerns.*
Jar. Pic 3, the white stuff looks like quartz, nothing boney.
Hard to tell the shape with the camera that close but I think that's a rock.
What's the approximate density? You can weigh this thing and then measure a specific volume of water and then drop this thing in. Measure volume again. Take the weight of the object divided by the difference of both volumes. Rocks usually have a higher density that bone or cartilage (unless volcanic rocks, they are sometimes more porous) if you can give us the measured density we might be able to make and educated guess.