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albite
the white one

almandine (garnet)

amazonite (microcline)
type of feldspar

apatite
...

aragonite
...

augite
pyroxene

azurite

bauxite
...

barite
...

beryl
...

biotite (mica)
...

bornite
...

calcite
...

celestite
...

chalcopyrite
...

copper
...

corundum
hardness 9

diamond
...

dolomite
...

epidote
...

orthoclase (feldspar)
...

fluorite
...

galena
...

goethite (limonite)
...

gold
...

graphite
...

alabaster (gypsum)
...

satin spar (gypsum)
...

selenite (gypsum)
...

halite
...

hematite
...

hornblende
...

kaolinite
...

lepidolite

magnetite
...

malachite
...

muscovite (mica)
...

olivine
...

opal
...

pyrite
...

agate (quartz)
...

amethyst (quartz)
...

chalcedony (quartz)
...

citrine (quartz)
...

crystal (quartz)
...
jasper (quartz)
petrified wood

milky (quartz)
...

rose (quartz)
...

rhodonite

silver
...

sodalite
...

sphalerite
...

staurolite
...

sulfur (sulphur)
...

talc
...

topaz
...

tourmaline (group)
...

tremolite

ulexite
...

gneiss
...

marble
...

phyllite
...

quartzite
...

schist (garnet)
...

schist (mica)
foliation

slate
...

andesite
...

basalt
...

diorite
...

gabbro
very mafic

granite
...

obsidian
...

pegmatite
...

pumice
...

rhyolite
...

scoria
...

anthracite coal
very shiny

arkose
...
bituminous coal
...

breccia
angular fragments

chert
...

conglomerate
...

coquina
...

diatomite
...
dolostone [dolomite rock]
...

lignite coal
very soft

limestone [chalk]
...

limestone [crystalline]
very hard limestone

limestone [fossiliferous]
...

limestone [oolitic]
...

limestone [travertine]
formed by evaporation

sandstone
...

shale
...
