Vote for your favorite mineral in #MinCup26! - Sphalerite vs. Anorthite Both zinc ore Sphalerite and calcium plagioclase feldspar Anorthite have perfect cleavage that will split cleanly if you hit them with a hammer, but only one can claim a larger split of your votes!
Limonite Psudomorphs after Pyrite.
Spherical nodules of Pyrite.
Large Calcite cristals with growth lines.
Specular Hematite
Limonite showing water solution tubes and encrusted with small crystals af clear Quartz
Llanharry Mine, Llanharry, Rhondda Cynon Taf, Wales, UK