Iridescent Goethite from Spain TF1502 black phantom Marcasite is an iron disulfide trona This specimen comes from B0111DS1988
Yard notes & kiln story
Description
Iridescent Goethite from Spain TF1502 black phantom Marcasite is an iron disulfide trona This specimen comes from B0111DS1988 Marcasite is an iron disulfide (FeS Lepidolite is a lithium rich mica mineral commonly found in granite pegmatites