Hornblendite from Avernish, Scotland rock thin section Coaster (C41)
A thin rock section of Hornblendite was viewed by polarised light microscopy. Hornblendite is a metamorphic rock and shows laths of actinolite in random orientation (actinolite is a member of the hornblende family)
From the Lewisian Gneiss of North West Scotland, The oldest rocks in the UK, and amongst the oldest anywhere on earth.
About 2500 million years old, half the age of the planet.
90mm square coasters printed by dye sublimation to give a vibrant, high gloss, scratch resistant finish.
Supplied with a description on the back of the coaster.
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