fluorite

Hi guys,
I have been researching fluorite recently and have been having trouble as it is not widely discussed. I discovered that nip has what appears to be a great amount of the highest-grade fluorospar. I found a price of $350/t but am unable to determine which grade of fluorite this is. If anyone has any info on prices or any good references they have been using, this would be most appreciated.
I am researching because csd also has some fluorite in QLD.

Cheers