#MinCup24 kyanite vs rhodochrosite

Vote #kyanite! The glorious blue harbinger of metamorphism done right: high pressure, and aluminous chemisty = beauty + lots of geo-information 🤩 🥰 🤓

Here's some Mull kyanite, together with it's pink cousin andalusite, in an outcrop at Ardalanish in Mull - what a rock! 😊 😍

#Geology #Mineralogy #Metamorphism #Mull #Moine @MineralCup