Mineral - Poldervaartite
Poldervaartite
Chemical Properties
Mineral Class
Silicates
Toxicity
none
Formula
Ca(Ca,Mn)(SiO₃OH)(OH)
Unit Cell
Physical Properties
Hardness
5
Streak
white
Density
Normal (2-3,5)
Cleavage
Fracture
Tenacity
Optical Properties
Color
whitebrownorangeyellowcolorless
Birefringence
Luster
Vitreous
Transparency
Pleochroism
Geomineralogical Properties
Crystal System
orthorhombic
Point Group
Space Group
Habit
sheaf-shaped, spherical, prismatic
Formation
Metasomatose (hydrothermale Umwandlung von Manganerzen)
Paragenesis
Twinning
Rarity
Rarely
Synonyms
Poldervaartite