Sylvite
Sylvite is a natural mineral form of potassium chloride, an important ore for the production of potassium fertilizers. It commonly forms in evaporite deposits, where it appears as crystalline aggregates. Sylvite can often be confused with halite but is more bitter and often exhibits a red color due to impurities.
Category: Halides
Hardness: 2
Specific Gravity: 1.99
Luster: Vitreous
Transparency: Transparent to translucent
Crystal System: Cubic
Cleavage: Perfect in one direction
Fracture: Conchoidal
Composition: KCl (Potassium chloride)
Typical Size: Crystals can vary, commonly found up to several centimeters
Found In:
United States 
Portugal 
Canada 
France
United States Portugal Canada France Uses:
- Used as a source of potassium in fertilizers
- Some use in the chemical industry
- Used for certain types of research in geology
Sylvite is believed to help with emotional stability and can enhance creative thought. It is often used in meditation and as a grounding stone.