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

Pyrite “Dollar”
Coal measures near Sparta, Illinois, USA
Size: 8cm

Resembling a fossil sand dollar (echinoid), this is a pyrite concretion in its natural radiating crystal form formed in the thin beds of black shale where the pyrite crystal grows outward in only two dimensions from the centre nucleus.

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