Crossword puzzle clue "flakes in geology class"

Here are the possible solutions for flakes in geology class clue

Answer
Clue
Relevancy
mica
Clue
Flakes in geology class
Definition
a rock-forming mineral (muscovite, biotite, lepidolite, etc.) with perfect basal cleavage
eons
Clue
Geology class periods [subscribe to the best indie xwords today at avxwords.com]
Definition
EON, a long period of time, also AEON
moltenlava
Clue
You might have heard about how it gets expelled in geology class
ores
Clue
They're graded in geology class
Definition
ORE, rock containing a valuable metal, also OWRE
strata
Clue
Layers, as in geology class
aeon
Clue
Unit in a geology book
Time span in a geology book
Division of geology
Definition
the largest division of geological time, composed of several eras, also EON

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