Question | Answer |
cleavage | a minerals ability to split easily along flat surfaces |
fracture | the way a mineral looks when it breaks |
streak | the color of a minerals powder |
luster | the term that describes how a mineral reflects light from its surface |
mohs hardness scale | It ranks ten minerals from softest to hardest |
Crystal | A solid with flat sides that meet at Sharp edges and corners |
Element | A substance composed of a single kind of atom |
Flourescence | A minerals ability to glow under ultraviolet |
Geode | A rounded, hollow rock that is often lined with crystals |
Crystallization | The process by which atoms are arranged to form a material with a Crystal structure |
Solid | A substance that keeps its shape because it's particles can't flow freely |
Solution | A mixture in which one substance dissolves in another |
Vein | Where minerals from a narrow channel or slab in the rock |
Inorganic | Because minerals do not come from living things, they are not regular |
Metamorphic rock | When an existing rock is changed by heart, pressure, or chemical reactions |
Igneous rock | Forms from the cooling of molten rock |
Sedimentary rock | When particles of other rocks or the remains of plants and animals are cemented together |
Texture | The look and feel of the rocks surface |
Banded | Grains of different colors |
Non-banded | Grains that occur randomly |
Coarse-Grained | Magma cools slowly |
Fine-Grained | lava cools rapidly |
Exstrusive | Igneous rock formed from lava that erupted onto earth surface |
Intrusive | Igneous rock formed from magma below earth surface |
Porphyry | A rock with large crystals |
Erosion | Water or wind loosen and carry away fragments of rock |
Deposition | Sediments settle out of water or wind |
Compaction | Sediments are pressed together in layers |
Comentation | Dissolved minerals glue glue sediments together |
Chemical rock | When minerals that are dissolved in a solution crystallize |
Organic rock | Forms where the remains of plants and animals are deposited in thick layers |
Folitated | Metamorphic rocks that have grains arranged parallel layers or bands |
Non-Folitated | |