big
black
brownishblack
compass
crystal
crystalline
decorative
fe3o4
ferric
ferromagnetic
formation
gemology
geology
gray
hematite
industry
iron
iron oxide
lodestone
magnet
magnetic
magnetite
massive
metal
metallic
metallurgy
metamorphic
mine
mineral
mineralogy
mining
nature
object
ore
oxide
pattern
pebble
quarry
quartz
raw
rock
rough
rust
sample
small
specimen
stone
texture
textured
white
定額
Magnetite rock specimen from mining and quarrying industries. Magnetite is a mineral and one of the main iron ores. With the chemical formula Fe3O4, it is one of the oxides of iron.の素材 [FY31085839281]
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