Halite
Halite (Rock Salt) · Mineral Specimen / Industrial Mineral
Crystal System
Cubic (Isometric); forms typical cubic crystals, hopper crystals, and massive or granular aggregates.
Mineral Group
Halides
Chemical Formula
NaCl
Formation Process
Sedimentary process formed by the evaporation of saline water bodies (such as enclosed lakes or restricted ocean basins) in arid climates.
About This Crystal
The specimen features a crystalline matrix of colorless to white salt crystals, showing distinct cubic forms clustered together with a glassy to vitreous luster and transparent to translucent clarity.
Physical Characteristics
Color is colorless or white with a white streak. It exhibits perfect cubic cleavage in three directions intersecting at 90 degrees. Fracture is conchoidal. Specific gravity is approximately 2.16. It is completely water-soluble and has a distinct salty taste.
Optical Properties
Singly refractive (isotropic) with a refractive index of approximately 1.544. No pleochroism.
Hardness & Durability
Origin Region
Found worldwide in sedimentary evaporite deposits. Notable locations include Poland (Wieliczka), Germany, Canada, and the USA (Michigan and Kansas).
Hardness & Durability
Mohs hardness of 2.5 (very soft). Extremely low durability, highly soluble in water, and sensitive to humidity.
Care & Maintenance
Must be stored in a dry environment away from high humidity and moisture. Never clean with water; use a dry brush only.
Rarity & Value
Very common mineral, though well-formed crystal clusters and specimen pieces vary in price based on size and clarity. Generally very affordable.
Special Characteristics
Highly soluble in water, exhibits perfect cubic cleavage, and lowers the freezing point of water.
Lore & History
Historically vital for human survival, preservation of food, and global trade routes. In metaphysical lore, salt is traditionally used for cleansing, purifying spaces, and grounding energy.