Locality
41°0´ east longitude, 13°0´ north latitiude   [ map ]

Name
Danakil, Ethiopia, Afrika

Personal relationship of donor
Exploration for potash

Historical relevance of location
The Danakil depression contains a salt lake and an active volcano. Salt is produced from the briny lake water, with sulphur as a by-product.

Geological relevance of location
The continent of Africa is cut by grabens, usually known as rift valleys, in which lakes have formed. Igneous magma has locally erupted at the graben edges in the form of volcanoes.

Classification of the earth

Structure	crystalline sulfur
Colour	yellow
Age	unknown, ?Holocene
other	This sulfur was formed by bacterial reduction of sulfate.

Donor

Geoscientific Collections Section of the Federal Institute for Geosciences and Natural Resources,
 Geological Survey of Lower Saxony,
 Hannover,
 Germany