Someone From Moscow
This page is the CodyCross answer for the clue below from Extraordinary Creatures, Group 1581, Puzzle 4 (Bridge Trolls).
Question is: Someone From Moscow
and the answer is: MUSCOVITE
Word Meaning:
MUSCOVITE — (mineralogy) A pale brown mineral of the mica group, being a basic potassium aluminosilicate with the chemical formula KAl₂(Si₃Al)O₁₀(OH,F)₂; used as an electrical insulator etc.
Definitions from Wiktionary.