| A | B |
|---|
| metamorphic rock | Rock that forms from an existing rock due to heat, pressure, or chemical reactions. |
| mineral | A naturally occurring, inorganic solid that has a crystal structure and a definite chemical composition. |
| organic rock | Sedimentary rock that forms from remains of organisms deposited in thick layers. |
| cementation | Process by which dissolved minerals crystallize and glue particles of sediment together. |
| inorganic | Not formed from living things or the remains of living things. |
| crystallization | Process by which atoms are arranged to form a material with a crystal structure. |
| crystal | A solid in which the atoms are arranged in a pattern that repeats again and again. |
| sedimentary rock | Rock that forms when particles from other rocks or the remains of plants and animals are pressed and cemented together. |
| igneous rock | Rock that forms from the cooling of molten rock at or below the surface. |
| streak | The color of a mineral's powder. |
| luster | The way a mineral reflects light from its surface. |
| chemical rock | Sedimentary rock that forms when minerals crystallize from a solution. |
| cleavage | A mineral's ability to split easily along flat surfaces. |
| fracture | The way a mineral looks when it breaks apart in an irregular way |
| extrusive rock | Igneous rock layer formed when lava flows onto Earth's surface. |
| intrusive rock | Igneous rock layer formed when magma hardens beneath Earth's surface. |
| compaction | Process by which sediments are pressed together under their own weight. |
| clastic rock | Sedimentary rock that forms when rock fragments are squeezed together under high pressure. |
| deposition | Process in which sediment is laid down in new locations. |
| vein | A narrow slab of a mineral that is sharply different from the surrounding rock. |
