| A | B |
|---|
| mineral | a naturally formed, inorganic solid that has a definite crystiline structure |
| element | a sustance that cannot be seperated or broken down into simpler substance s by chemical means |
| compound | a substance made up of atoms of two or more different elements joined by chemical bonds |
| crystal | a solid whose atoms, ions, or molecules are arranged in a definite pattern |
| silicate mineral | a mineral that contains a combination of silicon, oxygen, and one or more metals |
| nonsilicate mineral | a mineral that does not contain compounds of silicon and oxygen |
| luster | the way in which a mineral reflects light |
| streak | the color of the powder of a mineral |
| cleavage | the splitting of a mineral along smooth, flat surfaces |
| fracture | the manner in which a mineral breaks along either curved or irregular surfaces |
| hardness | a measure of the ability of a mineral to resist scratching |
| density | the ratio of the mass of a substance to the volume of the substance |
| ore | a natural material whose concentration of economically valuable minerals is high enough for the material to be mined profitably |
| reclamation | the process of returning land to its original condition after mining is completed |
| rock | a naturally occuring solid mixture of one or more minerals or organiz matter |
| rock cycle | the series of processes in which a rock cycle forms, changes, from one type to another is destroyed and forms again by geological processes |
| erosion | the process by which wind, water, ice or gravity transports soil and sediment from one location to another |
| deposition | the process in which material is laid down |
| composition | the chemical makeup of rock |
| texture | the quality of a rock that is based on the sizes, shapes, and positions of the rock's grains |
| intrusive igneous rock | rock formed from the cooling and solidfication of magma beneath the Earth's surface |
| extrusive intrusive rock | rock that forms as a result of volcanic activity at or near the Earth's surface |
| strata | layers of rock |
| stratification | the process in which sedimentary rocks are arranged in layers |
| foliated | the texture of metamorphic rock in which the mineral grains are arranged in planes or bands |
| nonfoliated | the texture of metamorphic rock in which the mineral grains are not arranged in planes or bands |
