1. Conversion of quartz-mine waste materials to exploitable resources and industrial products;Arvanitidis;Mine. Water and Environment IMWA, Sevilla Spain,1999
2. G.W.P. 2010.A study of silica sand quality and end uses in surrey and Kent.Final report.Registered no.OC326183 OX7 3PJ. Oxfordshire.
3. House, S., Prinz, C., Priess, C. 2012. Dorfner Analysenzentrum und AnlagenplanungsgesellschaftmbH (ANZAPLAN). Assessment of High PurityQuartz Resources, Chapter 2. Germany.
4. Crystalline silica primer.Bureau of Mines Staff, Branch of Industrial Minerals U.S. Department of the Interior;Lujan;Special Publication,1992
5. High purity quartz mineralisation in kyanitequartzites;Müller;Norway, Miner Deposita,2007