Rocks and Minerals Crossword

the way a mineral reflects light
the ability of a mineral to resist being scratched
the color of the powder scraped off of a mineral when rubbed against a rough hard surface
when a mineral splits into smooth definite surfaces
when a mineral breaks along rough or jagged surfaces
minerals or combinations of minerals from which metals and nonmetals are extracted
elements that are shiny, conduct heat and electricity, can be stretched into wires or bent into different shape
elements with dull surfaces, are poor conductors of heat and electricity, are not able to be stretched into wires or bent into different shapes
minerals that are rare, hard, beautiful and durable that are often cut for jewelry
hard substances composed of two or more minerals
rock formed from hot, fluid magma or lava
rocks formed when particles of rocks are carried and deposited by wind and water
small particles of rock
rock formed when chemical changes, heat or pressure, change a rock
the continuous changing of rocks from one form to another over long periods of time
igneous rocks formed from lava on the outside of the earth
igneous rocks formed from magma within the earth
the process of changing a rock into another rock as a result of heat, pressure or chemical reactions
naturally occurring, inorganic, solid having a definite crystalline structure and unique chemical composition
repeating pattern of a mineral having flat sides that meet in sharp edges and corners