ERS120H5 Lecture Notes - Lecture 5: Euhedral And Anhedral, Calcite, Sodium Chloride
Document Summary
The planet that we know are all made up of minerals. Made up of a nucleus: approximately the same number of positive protons and neutral neutrons. The outer shell: approximately the same number of negative electrons. An element is a grouping of the same atoms that all have the same number of protons (e. g. carbon, oxygen, uranium) Minerals have the following properties: naturally occurring, solid, crystalline structure (has to be very organized) The image on the left is a mineral and the image on the right is not: definable chemical composition, inorganic. Yes because its properties agree with the checklist above. Lec 5: crystal habit: shape of the crystal (the shapes are defined by the atoms and the bonding between them) Euhedral: crystals are well formed, you can see the faces. Anhedral: no well formed crystal faces: cleavage: whats inside the mineral (some planes would break better than others) Mica breaks into sheets, calcite break into rhombs.
