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amphibole
amphibolite
amphibolithe
argillite
biotite
bituminous
black
bornite
claystone
coal
collage
collection
cut out
cutout
description
dunite
flint
gabbro
gray
hematite
ilmenite
iron
isolated
knopite
mica
mineral
mudstone
name
natural
nepheline syenite
olivinite
ore
peacock ore
quartz
raw
rock
rough
sample
schist
schorl
set
shale
specimen
stone
tourmaline
unpolished
various
white
white background