Rocks & Their Properties Crossword

This printable crossword puzzle on the topic of Rocks & Minerals has 10 clues. Answers range from 4 to 9 letters long. This crossword is also available to download as a Microsoft Word document or a PDF.

Is a hard rock which can be burned as a solid fossil fuel
Is a type of volcanic rock formed when lava with extremely high levels of water and gases is violently ejected from a volcano
Is a metamorphic rock that forms when limestone is subjected to the heat and pressure of metamorphism
Is a common extrusive igneous rock formed from the rapid cooling of lava exposed at or very near the surface of a planet or moon
Is a sedimentary rock that forms from mudstone or shale
Is a metamorphic rock consisting of pyroxene omphacite and pyrope-rich garnet
Is a sedimentary rock composed of grains of sand which then are cemented together by quartz, silica, feldspar or clay
Is an aggregate of tightly packed quartz grains
Is a fine grained sedimentary rock whose original constitutes were clays and muds
Is a sedimentary rock composed mainly of silt-sized particles