
Slate
for chamber brass and percussion
Duration: 5'
Slate
/slāt/
A fine-grained, clayey metamorphic rock that cleaves, or splits, readily into thin slabs having great tensile strength and durability. The direction of cleavage depends upon the direction of the stresses applied during metamorphism. -from the Encyclopaedia Britannica
Photo by Devon Janse van Rensburg