idocrase
ˈʌɪdə(ʊ)kreɪz
ˈʌɪdə(ʊ)kreɪs
noun
a mineral consisting of a silicate of calcium, magnesium, and aluminium, occurring typically as dark-green to brown prisms in metamorphosed limestone.
noun
a mineral consisting of a silicate of calcium, magnesium, and aluminium, occurring typically as dark-green to brown prisms in metamorphosed limestone.
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