Oligoclase

An10-An30

Oligoclase - An10-An30Oligoclase - An10-An30Oligoclase - An10-An30
Chemical name
Oligoclase
Mineral name
Oligoclase
Chemical formula
An10-An30
Crystal system
triclinic
Crystal Class
Pinacoidal
Space Group
C1
Mohs hardness
6 - 6.5
Cleavage
(001) perfect, (010) good, (110) poor
Fracture / Tenacity
Uneven, Sub-Conchoidal
Color
usually white, with shades of grey, green, or red
Luster
Vitreous
Refractive Index
nα = 1.533-1.543,
nβ = 1.537-1.548,
nγ = 1.542-1.552