Staurolite is a reddish brown to black, mostly opaque, nesosilicate mineral with a white streak. It crystallizes in the monoclinic crystal system, has a Mohs hardness of 7 to 7.5 and the …

Staurolite is a mineral that is commonly found in metamorphic rocks such as schist and gneiss. It forms when shale is strongly altered by regional metamorphism. It is often found in association …

2019年1月20日 · Staurolite gemstones are unique, beautiful, and striking because they create the shape of a cross right within the stone. They’re also known as the Fairy Cross because they …

Staurolite, also known as Fairy Stone or Fairy Cross, is a nesosilicate mineral that naturally occurs in cross shapes (cruciform). The minerals usually cross at a 60 or 90 degree angle, …

From Greek "stavros", cross, alluding to the cruciform twins it displays in some cases. Staurolite Group. Visit gemdat.org for gemological information about Staurolite. As of 2021 there are now …

2024年7月1日 · Staurolite is a mineral that is known for its unique crystal shape and its association with metamorphic rocks. The name "staurolite" comes from the Greek words …

Staurolite is best known for its distinctive, cross-shaped penetration twins, where two rectangular crystals intersect each other to form a perfect cross.

Staurolite is a gem that captivates with its distinctive physical color. This beautiful crystal has shades of brown from reddish-brown to dark brown, frequently with gorgeous black …

Staurolite is a regional metamorphic mineral of intermediate to high grade. It occurs with almandine garnet, micas, kyanite; as well as albite, biotite, and sillimanite in gneiss and schist …

2022年8月29日 · Staurolite is a red-to-black crystalline silicate mineral that forms in pairs of prismatic crystals with right angles. The name Fairy Cross seems apt, especially if you have a …