| Characteristic minerals include quartz, muscovite, biotite, chlorite, andalusite, actinolite, calcite, dolomite, albite, and epidote. |
| Chrysotile is part of the serpentine group whereas tremolite, amosite, crocidolite, actinolite and anthophyllite are part of the amphibole type. |
| Nephrite, a variety of the mineral actinolite, is even tougher, due to its composition of fibrous crystals inter-twinned in a tough compact mass. |
| Dark green, acicular crystals of actinolite can be collected from this quarry, which is smaller and older than the Metronite quarry. |
| The cause of its chatoyance can be embedded fibers of asbestos, as well as actinolite fibers. |
| Tremolite may weather to talc, and both tremolite and actinolite may alter to chlorite or carbonates. |
