An important neosilicate mineral, which is predominantly found in rocks which have undergone regional metamorphism. Staurolite is an index mineral and can be used to gauge the temperature and pressure conditions during the formation of the host rock. It is not a completely reliable indicator, as the mineral itself is quite persistent, and it is important to look at the presence and absence of other minerals which occur within staurolite's stability zone.
Twinned staurolite crystals Sold Out