Potassium

Electron Backscatter Diffraction (EBSD)

OIM orientation and phase maps from a granite sample with multiple K-bearing minerals present.

Orientation Map

Granite sample orientation map

Magnetite

MagnetiteMagnetite - Fe3O4

Albite

Albite Albite - NaAlSi3

Microline

Microline Microline - KAlSi3O8

Phase Map

Granite sample phase map

Quartz

Quartz Quartz - SiO2

Biotite

Biotite Biotite K (Fe, Mg)3AlSi3O10(F, OH)2

Albite and Microline are both triclinic phases.