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.
Buyany four coasters for £16orany six for £22 – just order the 4 or 6 coaster listings and put the numbers of the coasters you want into the text box. Mix them up for variety or get a matching set – whichever you want.
Free UK delivery on orders over £10 (£1 delivery charge for orders below £10).
Orders are normally sent out within 2 working days.