340 likes | 462 Views
Difference Between Rocks and Minerals. Physical Properties of mineral are the same throughout Physical Properties of rocks vary from one part of the rock to another. Rocks are classified according to origin (where and how it formed) either: Igneous, Metamorphic, or Sedimentary.
E N D
Physical Properties of mineral are the same throughoutPhysical Properties of rocks vary from one part of the rock to another
Rocks are classified according to origin (where and how it formed)either: Igneous, Metamorphic, or Sedimentary
Minerals are classified according to their chemical composition and the arrangement of their atoms
Igneous rock is rock formed by the cooling and hardening of molten rock
The solid grains or pieces of mineral that form when molten rock cools and hardens are called CRYSTALS
If a rock has only one kind of mineral crystal it is called MONOMINERALLIC
If a rock has more than one kind of mineral crystals it is called POLYMINERALLIC
Large crystals form deep within the Earth. Small crystals form close to the Earth’s surface
The faster the cooling the SMALLER the crystals, or the slower the cooling the LARGER the crystals
INTRUSIVE IGNEOUS ROCKA rock formed by cooling magma below the surface
EXTRUSIVE IGNEOUS ROCKA rock formed by cooling lava on the surface
EXTRUSIVE IGNEOUS ROCKFormed on the surface of the Earth from lava
Fine texture meansSMALL CRYSTALS, makes it more difficult to identify
Glassy Texture means very rapid cooling resulting in no crystalsex. Obsidian
PUMICE- type of lava rock, rough surface with very low density, cooled rapidly trapping in gasses