General formula:

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

N° standard / mount: 028 / Tubes
Standard elements: Al Fe K Mg Si
Mineral class: Silicates
Group: Micas
Comments:

Lots of small grains, most seem homogeneous, 1 heterogeneous, lighter inclusions (titanite)

Analysis:
Biotite LP6 Analysis
Biotite LP6