Sapphirine's type locality is in western Greenland, south of Nuuk, which is where the mineral was discovered in 1809 by Karl Giesecke.

It was named due to its blue color being similar to sapphire, a different, associated mineral (#corundum, aluminum oxide).

An amazing amount of information can be found about #sapphirine at MinDat:
https://www.mindat.org/min-3531.html
a non-profit mineral data base founded in 2000 by Jolyon Ralph (who is on Mastodon at @jolyon).

#MinCup23 #Minerals #Greenland