Sodium-Rich Volcanic Rock
This page is the CodyCross answer for the clue below from Apothecary, Group 1976, Puzzle 3 (Licensed Drugs).
Question
Sodium-Rich Volcanic Rock
Answer
ANDESITE
Word Meaning:
ANDESITE — (geology) Any of a class of fine-grained intermediate igneous rock, of volcanic origin, containing mostly plagioclase feldspar.
Definitions from Wiktionary.