Rock terms chapter 7 Lesson 2, Minerals- Chapter 7 Lesson 1

grain

tiny pieces of crystals or other rocks that make up a rock

coarse

rock texture with grains that can be seen

fine

rock texture with grains that can't be seen without magnification

rounded

rock texture with grains that have been weathered and eroded

jagged

rock texture with rock grains that are angular and sharp

crystalline

rock texture with grains that are interlocked crystals

nonbanded

rock texture with grains in random arrangment

banded

rock texture with grains arranged in layers

intrusive

coarse igneous rock that forms when magma hardens slowly beneath Earth's surface.

extrusive

fine grained Igneous rock that forms from lava quickly cooling on the surface

weathering

breaking down older rocks

erosion

carrying the pieces of older rocks away

sediment

parts of older rocks that are carried away by erosion

deposition

the settling of sediments that were carried by erosion

metamorphic

rocks that have changed form

foliated

metamorphic rocks where crystals regrow to form layered bands

nonfoliated

metamorphic rock where grains remain random and not layered

solution

a mixture in which one substance is dissolved in another

fracture

property of a mineral to break apart in an irregular way

luster

describes how light is reflected from a mineral's surface

mineral

naturally occurring inorganic solid with crystal structure and definite composition

inorganic

not formed from living things or the remains of living things

crystallization

process by which atoms arrange into a crystal pattern

streak

the color of a mineral's powder

cleavage

property of a mineral to split easily along flat surfaces

crystal

repeating pattern of a mineral's particles that forms a solid structure

magma

a mixture of liquid rock and dissolved gases inside the crust

lava

liquid rock, that flows out onto Earth's surface

hardness

how well a mineral resists being scratched