This is at the University Museum. Amethyst, a purple variety of quartz.
A goniometer belonging to Friedrich Moh
A goniometer for large crystals, belonging to Friedrich Moh
Friedrich Moh's crystal testing set.
A Laue diffraction pattern
A large kidney stone, extracted from a dog.
A variety of silica minerals.
Native gold.
Native gold.
Handwritten laboratory notes.
Dolomite (calcium magnesium carbonate)
Aragonite (calcium carbonate)
Garnet
Friedrich Moh's equipment, admired by Thomas Boellinghaus
The goniometers again.
Friedrich Moh's laboratory notes, handwritten. Amongst other things, he invented the Moh's scale for hardness, diamond being 10 and Talc being 1. This was in 1822, in Graz. Iron is between 4 and 5 on this scale, although this clearly depends on microstructure. For example, a hardened steel file has a Moh's hardness in excess of 7.
The gentleman on the right is the excellent guide who explained all the detail.
