These people may help, too - rocks are often crushed to test for hardness/mechanical 'weathering', and the Dep't Mineral Resources might advise.
New South Wales Department of Mineral Resources' Drill Core Library: 947-953 Londonderry Road, Londonderry, 2753.
Ph: (02) 4777 4316; Fax: (02) 4777 4397.
It is one of the most modern and comprehensive of its kind in the world. The Library represents an extremely important and valuable information resource for the state. |