I'm replying to my own question so that someone with the same question might have an easier time finding this information than I did.
1. what is fluorspar?
-fluorspar is the same as fluorite. Fluorite is the mineral form of calcium fluoride, CaF₂.
2. where do you buy fluorspar?
-fluorspar is available at some pottery supply stores, its used in making glazes.
- it can also be bought on amazon, listed as "1-Lb Assay Fluorspar for Gold Recovery-Flux-Smelting-Thinner" sold by "make your own gold bars"
