Sylvite
ID: 35
Sylvite
Chemical Formula
KCl
Hardness (Mohs)
2
Crystal System
Isometric
Streak
White
Luster
Vitreous (glassy)
Diaphaneity
Transparent to translucent
Color
Colorless, white, gray, yellow, red, blue.
Crystal Habit / Mode of Occurrence
Isometric - Hexoctahedral; typically cubic crystals, often with good cleavage; also granular, massive.
Fun Facts
Sylvite tastes distinctly more bitter than halite (table salt), allowing for easy differentiation by taste (though caution is advised with unknown minerals). Common Uses: Major source of potassium for fertilizers, chemical industry.