Mineral - Minehillite
Minehillite
Chemical Properties
Mineral Class
Silicates
Toxicity
none
Formula
(K,Na)²⁻₃Ca₂₈Zn₄Al₄Si₄₀O₁₁₂(OH)₁₆
Unit Cell
Physical Properties
Hardness
4
Streak
white
Density
Normal (2-3,5)
Cleavage
Fracture
Tenacity
Optical Properties
Color
whitecolorless
Birefringence
Luster
Pearly
Transparency
Pleochroism
Geomineralogical Properties
Crystal System
hexagonal
Point Group
Space Group
Habit
coarse, massive, tabular
Formation
Metamorphose, hydrothermal
Paragenesis
Twinning
Rarity
Rare
Synonyms
Minehillite