1 / 9

4.1

4.1. What is a mineral?!?!. Objectives for 4.1. Define a mineral Describe how minerals form Classify minerals according to their physical and chemical properties Main idea:

fleur
Télécharger la présentation

4.1

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. 4.1 What is a mineral?!?!

  2. Objectives for 4.1 • Define a mineral • Describe how minerals form • Classify minerals according to their physical and chemical properties Main idea: Minerals are naturally occurring, , inorganic compounds or elements with a definite chemical compostionand ___________________

  3. Little side note on minerals • Early humans painted on rock walls made from red & yellow pigments in soils (hematite & ochre) • Countries have fought wars and trade companies battled over deposits of table salt (halite) • Today, we build our houses out of dry wall (gypsum), cement out of lime (calcite), and extract aluminum from bauxite to make aluminum foil and soda cans I FEEL MY IGNORANCE DEPLETING!!

  4. Mineral Characteristics • Earth’s crust:

  5. Mineral Characteristics • Naturally occurring: • Inorganic: • Definite chemical composition: each mineral has unique chemical composition to identify itself • Salt or Halite (NaCl) • Muscovite (KAl2(AlSi3O10)(OH)2) • Graphite ( C )

  6. Mineral Characteristics • Definite crystalline structure:

  7. Rock-Forming Minerals • _______ of the 30 most common minerals • Primarily composed of the ____ most common elements in the Earth’s crust • Oxygen (46.6 %) • Silicon (27.7%) • Aluminum (8.1 %) • Iron (5%) • Calcium (3.6 %) • Sulfur (2.8%) • Potassium (2.6 %) • Magnesium (2.1 %) • Other (1.5%)

  8. Minerals from magma • What is magma? • Density of magma: • What minerals form from magma are based on 2 things: Rate at which magma cools is important

  9. Minerals from solutions • Saturated solution: • Supersaturated solution:

More Related