West Virginia Mountain, Sedimentary Rock
This page is the CodyCross answer for the clue below from Inventions, Group 51, Puzzle 3.
Question is: West Virginia Mountain, Sedimentary Rock
and the answer is: LIMESTONE
Word Meaning:
LIMESTONE — An abundant rock of marine and freshwater sediments; primarily composed of calcite (CaCO₃); and occurring in a variety of forms, both crystalline and amorphous.
Definitions from Wiktionary.