GEO SCIENCE

Septarian concretion – they remain a curiosity as geologists are unsure how they are formed.

Azurite once used as pigment by artists Hans Holbein the younger and Raphael for backgrounds in their paintings. Azurite was used on the Acropolis in Athens and in ancient Egypt for a brief period in history.

Imilac meteorite found in the Atacama Desert of Northern Chile in 1822.
Images in sequence:

1. Septarian concretion.

2. Azurite.

3. Azurite detail.

4. Imilac (individual with cross section) Stony iron Pallasite meteorite. Detail.

Photography Malcolm Brown 2013.

These images have been reprocessed, remixed and adapted from images photographed by Malcolm Brown for the University of Edinburgh Heritage Collections.