Hello Imran,

Section 2 of Benny Guralnik's 2015 QuaGeo paper:

Article OSL-thermochronometry using bedrock quartz: A note of caution

is a quick summary of the ways to test the purity of a quartz separate.

Best wishes,

Nathan

May refer to Mayank Jain or his colleagues; who is also on Researchgate

for answer as they are dealing with such materials comprehensively.

Hello Imran,

here is a copy of the Guralnik paper that Nathan Brown suggested in case you did not have access to it.

Best wishes,

Luca

Dear Luca, Thanks a lot for sharing the pdf.