OREAS 23b has been prepared from barren I-Type hornblende-bearing granodiorite sourced from the Upper Devonian Lysterfield granodiorite complex located in south-eastern Melbourne, Australia. It is characterised by very low background gold of less than 3 parts per billion.
| CRM Code |
Principle Certified Values |
State |
Matrix |
Mineralization |
| OREAS 23b |
Au <3ppb |
Ag 0.065ppm |
Cu 46.7ppm |
primary |
granodiorite |
barren |