an extrusive usually dark grayish rock consisting essentially of oligoclase or feldspar

an extrusive usually dark grayish rock consisting essentially of oligoclase or feldspar
Crossword Clue
**We have found 2 answers to crossword clue "an extrusive usually dark grayish rock consisting essentially of oligoclase or feldspar"**
**The Best Answer: 10/10**
Answer	Crossword Clue
andesite	an extrusive usually dark grayish rock consisting essentially of oligoclase or feldspar
trachyte	fine-grained volcanic rock consisting essentially of alkali feldspar and one or more subordinate minerals, as hornblende or mica: the extrusive equivalent of syenite

Crossword

a puzzle consisting of a grid of squares and blanks into which words crossing vertically and horizontally are written according to clues.

an extrusive usually dark grayish rock consisting essentially of oligoclase or feldsparCrossword Clue