Back to: Nature online

Earth lab datasite

Axinite
Silicate axe-like crystals
hydrous calcium iron manganese aluminium borosilicate
Ca2 (Fe Mn) Al2 B Si4 O15 OH
Scale bar = 1 centimetre
cleavage: Good
crystal system: Triclinic
hardness 6.0 - 7.0
relative density 3.2 - 3.4
Botallack Cliffs, Cornwall
25 K 7