0_Apprentice
I really find the sensation of chalk on my skin unpleasant. Do you have any odd sensory quirks?
1_Wizard
I know what you mean but it probably because of it porous, sedimentary texture
0_Apprentice
Yes, I dislike pumice as well, you're probably right. It's a shame, though, because I enjoy making art with my kids and sidewalk chalk is so easy to clean up. Do you ever draw with chalk?
1_Wizard
No but I understand that it is composed of a calcite ionic salt called calcium carbonate
0_Apprentice
Yes, usually mixed with water-soluble pigments. Are you interested in chemistry or geology? you seem to have a very scientific bent to your conversation. 