The first plagioclase crystals to form as a hot melt cools are high in ______.
A) iron
B) calcium
C) manganese
D) carbonate
E) lead

Name: The first plagioclase crystals to form as a hot melt cools are high in ______. A) iron B) calcium C) manganese D) carbonate E) lead
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Plagioclase crystals are made up of calcium, sodium, and aluminum silicates. As the hot melt cools down, the first plagioclase crystals to form are rich in calcium.

The First Plagioclase Crystals to Form as a Hot Melt