Staurolite - Fairy Cross
What is staurolite?
What is staurolite?
Staurolite is a mineral, usually brown or black in color, that is commonly found in metamorphic rocks such as schist and gneiss. It forms when shale is strongly altered by regional metamorphism.
Staurolite is a mineral, usually brown or black in color, that is commonly found in metamorphic rocks such as schist and gneiss. It forms when shale is strongly altered by regional metamorphism.
The name "staurolite" is from the Greek work "stauros" which means "cross". The mineral commonly occurs as twinned, six-sided crystals that sometimes intersect at 90 degrees to form a cross. (An intersection angle of 60 degrees is more common).
The name "staurolite" is from the Greek work "stauros" which means "cross". The mineral commonly occurs as twinned, six-sided crystals that sometimes intersect at 90 degrees to form a cross. (An intersection angle of 60 degrees is more common).