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Related Terms:
aplite
albite
feldspathoid
plutonic
porphyroid
granophyre
aluminosilicate
keratophyre
saussurite
labradorite
nepheline
microcline
celsian
arkose
granite
saccharite
sodium
ice spar
anorthite
diabase
k spar
petunse
calcium
silica group
spectrolite
barium
perthite
feldspars
plagioclase
oligoclase
feldsparlike
bostonite
andesine
trachyte
moonstone
sanidine
sunstone
foyaite
buddingtonite
tenmoku
adularia
halleflinta
maskelynite
phonolite
anorthoclase
silicon
syenite
rhyacolite
diorite
feldspathic
eclogite
greywacke
chesterlite
antiperthite
bytownite
alkalifeldspar
charnockite
spilite
rock
graystone
hypersthenite
mineral
pegmatite
silicate
amazonite
feldspathose
aluminum
granodiorite
norite
orthoclase
alaskite
clinozoisite
stinkstone
potassium
ophitic
anorthosite
leucogabbro
granulite
miascite
crust
unakite
leucite
andesite
amazonstone
hyalophane
larvikite
peralkaline
heliolite
quartzofeldspathic
necronite
igneous
plag
Definitions:
Noun
feldspar
felspar
Definition: any of a group of hard crystalline minerals that consist of aluminum silicates of potassium or sodium or calcium or barium
Definition: Any of a large group of rock-forming minerals that, together, make up about 60% of the earth's outer crust. The feldspars are all aluminum silicates of the alkali metals sodium, potassium, calcium and barium. Feldspars are the principal constituents of igneous and plutonic rocks.