General formula:

MgCO3

N° standard / mount: 076 / Tubes
Standard elements: Mg
Mineral class: Carbonates
Locality: Obersdorf Steiremark
Comments:

mostly homogeneous, some porosity/ scratches, small lighter inclusions. Some variations in Fe content

Analysis:
Magnesite Analysis
Reference: ETH collection, Oberholzer, E004
Magnesite