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单词 sannaite
释义 sannaite
[`san·ǝ´īt]
PETROLOGY
An extrusive rock containing phenocrysts of barkevikite, pyroxene, and biotite (in order of decreasing abundance) in a fine- grained to dense groundmass of alkali feldspar, acmite, chlorite, calcite, and pseudomorphs of mica after nepheline.
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