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Mineral Groups
10957#10901
SIBLINGS
CHILDREN
10901
Songs in Easy English
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silica tetrahedron
⪢⪢
#bookmark
10957#16437
SIBLINGS
CHILDREN
16437
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silicate
⪢⪢
-- crust, silicon, feldspar, quartz, potassium, plasioclase
10957#10958
SIBLINGS
CHILDREN
10958
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