pyroaurite
noun
py·ro·aurite
ˌpīrōˈȯˌrīt
plural -s
: a mineral Mg6Fe2(OH)16CO3.4H2O that is a hydrous basic carbonate of magnesium and iron
Word History
Etymology
Swedish pyroaurit, from pyr- + Latin aurum gold + Swedish -it -ite; from its resemblance to gold after being heated