OREAS 630b is a zinc tailings certified reference material (CRM) sourced from the Rosebery metallurgical plant owned and operated by MMG Ltd. The Rosebery mine and plant are located in the north-west region of Tasmania, Australia approximately 300 kilometres north-west of Hobart and 125 kilometres south of Burnie. The key minerals of economic importance include sphalerite, galena, pyrite, chalcopyrite and electrum.
Twenty commercial analytical laboratories participated in the program to certify the elements
OREAS 630b is a SuperCRM™
| CRM Code |
Principle Certified Vakues |
State |
Matrix |
Mineralization |
| OREAS 630b |
Zn 1.11% |
Pb 0.442% |
Ag 19ppm |
primary |
pyritic tailings |
massive sulphide |