Description
“Hungerberg” = “Hunger Mountain”.
“Erzhöhle” = “Ore cave (deposit?)”.
“Bolus” = “Bowl”.
Set of 3 specimens of clay (??), more or less hard and shiny. It’s hard to say what it is exactly…
From Germany, part of the mineralogical collection of the Bally Museum in Schönenwerd, Switzerland (19th century).
Supplied with its original label and box.
This post is also available in: French