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bromonox bromonox
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8 years ago
Dark Silicates have a specific gravity of 3.2 to 3.6 and are composed primarily of silica tetrahedral and ________.
A) iron and magnesium
B) potassium and calcium
C) aluminum and magnesium
D) potassium and iron
E) aluminum and sodium
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Earth Science

Earth Science


Edition: 14th
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PulsaPulsa
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bromonox Author
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8 years ago
Perfect timing, thank you for the help!
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