Microgranite is valid Scrabble Word

Is microgranite a scrabble word?
Official Scrabble Players Dictionary NO
Official Tournament and Club Word List NO
Collins Scrabble Words YES
Is microgranite valid Words with Friends?
Words with Friends YES

Definitions for MICROGRANITE in dictionary:

Words related to MICROGRANITE

microgranites18
Find what other words can be done using letters: "microgranite"
https://scrabble-word.com/finder/microgranite
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