amphibole
basalt
benitoite
calcite
courage stone
crosite
crossite
crystal
druze
fibrous
fluorescent
geology
globular aggregates
intuition
ionosilicate
lava
magnesioriebeckite
mineral
natrolite
needles
nepheline syenites
neptunite
opaque
protrusions
radiating
sample
science
silicate
sodic
translucent
ultraviolet
zeolite