I would like to know the procedure/technique to determine the refractive index (RI) of powder sample of rocks (clay, etc.) ?

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Pravin Bhukte

Thanks Dr Pavitra I think Becke line microscopic method is for polished and thin section of rocks/ ore . our sample is -100 mesh size powder sample . Do u have any idea about refractometer used for RI

Alejandra Cárdenas Rosales

Hello Pravin,

I found this file on-line, I hope it helps you.

https://rudolphresearch.com/wp-content/uploads/2015/06/Refractometers-for-Particle-Size-RI.pdf

Regards.!

Thanks