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!
At the Narre Warren quarry "The pyrite veining the brecciated clay is generally massive but may form bright, hemispherical groups of multiply-twinned crystals up to 1 cm across in open spaces. The only other occurrence of pyrite is as microscopic capillary growths associated with phillipsite crystals in some of the cavities."