1 / 11

How Minerals Form

How Minerals Form. From magma or lava. Atoms form crystal structures as they cool Crystals from magma deep in the ground tend to be large because of slow cooling Crystals from magma near the surface and lava tend to be small because of quick cooling. Minerals from solution.

della
Télécharger la présentation

How Minerals Form

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. How Minerals Form

  2. From magma or lava • Atoms form crystal structures as they cool • Crystals from magma deep in the ground tend to be large because of slow cooling • Crystals from magma near the surface and lava tend to be small because of quick cooling

  3. Minerals from solution • When the elements and compounds that are dissolved in water leave a solution, crystallization occurs

  4. Minerals from solution • Evaporites – minerals that form when water evaporates and leaves crystals behind

  5. Minerals from hot solution • Veins – narrow channel or slab of mineral that is different than the surrounding rock • Veins are formed from minerals dissolved in very hot water and crystallize in the cracks of rock.

  6. Classifying Minerals

  7. Mineral Groups • Most minerals are made from only 8 elements O Si Al Fe Ca Na K Mg

  8. There are 12 rock forming minerals Feldspar Quartz Calcite

  9. Minerals are classified by their composition Silicates – Si, O (Most common) Carbonates – C with 3 O Sulfates – S with four O

  10. Halides – contains Cl, F, I, Br • Oxides – O with another element • Sulfides – S with another element • Native Elements

  11. Classify each into a mineral group Carbonate Silicate Sulfide Native element Sulfate Silicate Carbonate Halide Siderite (FeCO3) Talc (Mg3Si4O10(OH)2) Cinnabar (HgS) Silver (Ag) Barite (BaSO4) Enstatite (MgSiO3) Malachite (Cu2CO3(OH)2) Sylvite (KCl)

More Related