#MinCup23 calcite and kyanite are both wonderful minerals.But I'm going for kyanite: it bespeaks deep burial, and high pressure, and it always makes a rock better to have some kyanite in it. Here's a pic of some deep blue, chromium-rich kyanite, with green fuchsite, and pink ruby, from Mysore in India. Apologies for shaky blurs - I was clearly too excited to hold the camera steady. 😁 🤩 🥰 #VoteKyanite #Geology #Mineralogy

#MinCup23 cacoxenite vs kyanite: #VoteKyanite Here's a massively chonky block of Dalradian kyanite (maybe 40cm long) from Shetland, on display at the #BGS Lyell Centre in Edinburgh. #Geology #Shetland #Kyanite Lovely! 🥰 🤩