Free Silica

sir

please give the clarification of XRD Quantitative Quartz & Free Silica in Limestone by ASTM Method both are same or different.

pls clarify my doubts

Regards

Nagu

Reply

Know the answer to this question? Join the community and register for a free guest account to post a reply.

re Free Silica

Free Silica and Quartz both are different

Free Silica is mainly SiO2 and it has a mixture of Amorphouse and Crystaline Silica, whereas Quartz has impurity of Iron / Manganese / Calcium with crystaline form of silica.

Free Silica can be determined by conventional methods but Quartz can be determined by microscopy or XRD only.

Reply