Hackmanite Details

Hackmanite is a mineral that is a member of the sodalite group of minerals. It is typically pink or purple in color and is often used as a gemstone. Here is some information about Hackmanite:

Types & Varieties

Elementary Chemical Analysis

Physical Properties

Optical Properties

Uses

Hackmanite from Afghanistan 
Effect Before and after expose ultra violet  light 

Types & Varieties

Hackmanite is typically classified as a tectosilicate mineral. It is a member of the Sodalite group of minerals, which includes other minerals like sodalite, hauyne, and lazurite.

Elementary Chemical Analysis

Hackmanite is composed of sodium, calcium, aluminum, silicon, sulfur, and oxygen. Its chemical formula is Na8Ca2Al6Si6O24S3.

Physical Properties

• Hardness: 5.5-6 on the Mohs scale
• Specific gravity: 2.3-2.4
• Luster: vitreous to greasy
• Transparency: translucent to opaque
• Crystal system: isometric

Optical Properties

• Color: typically pink or purple, but can also be gray, yellow, green, or white
• Cleavage: none
• Fracture: conchoidal
• Pleochroism: none
• Refractive index:  SR,1.49-1.5

Uses

Hackmanite is often used as a decorative stone and as a gemstone. It is also used in some types of ceramics and glass. In addition, it is used in some types of radiation detectors due to its ability to fluoresce under certain conditions.