Native Copper Cu Dendritic Habit Dendritic aggregates form in slender, divergent, plant- or tree-like branches Size: 10 cm Stibnite Sb2S3 Acicular Habit Needle-like, slender crystals. Size: 15 cm Pectolite Aggregate NaCa2(HSi3O9) Radiating Habit Fibrous Pectolite crystals grew outward from a central point Size: 8 cm Hematite Aggregate Fe2O3 Botryoidal Habit A globular aggregate resembling a bunch of grapes with each round mass consisting of radiating small crystals Size: 10 cm (left), 13cm (right) Hematite Aggregate Fe2O3 Micaceous Habit Minerals that split into very thin sheets have a micaceous Habit Size: 12 cm