SINCE 1828
mineral blue
nounDefinition of mineral blue
1
: a blue pigment: such as
a
: a natural pigment made by grinding the mineral azurite or a synthetic pigment of similar composition
— called also mountain blue
— compare blue verditer
c
: an iron blue usually lightened by admixture (as with white clay)
2a
: azurite blue
b
: antwerp blue
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