| The Archaean Baidrag complex, composed of tonalitic gneiss, granulite and amphibolite, with minor marble and quartzite, has been interpreted as a microcontinental block. |
| The Moine rocks widely record polyphase deformation and metamorphism up to amphibolite facies. |
| The Nisk-1 deposit is hosted in an elongated body of serpentinized ultramafic rocks that intrude the BLM paragneiss and amphibolite sequence. |
| The main lithological units on the property are paragneiss, amphibolite and late granodioritic to granitic intrusions. |
| A uniform, regionally concordant layer of amphibolite with occasional ultramafic pods, termed the Sta Amphibolite, overlies the Sta Series. |
| The Burd Gol melange is also the most highly metamorphosed unit locally containing amphibolite grade staurolite and kyanite schists. |
