Tue 1/19 1.What is a mineral? Minerals are naturally occurring They are not made by humans Minerals are inorganic They have never been alive and are not made up from plants or animals Minerals are solids They are not liquids (like water), or gases (like the air around you) Minerals have a definite chemical composition Each one is made of a particular mix of chemical elements Minerals have an ordered atomic arrangement The chemical elements that make up each mineral are arranged in a particular way - this is why minerals 'grow' as crystals

Crystal – the atoms that make up the mineral are arranged in a particular pattern.

After quiz ( if needed turn in Mineral Lab ws from yesterday) 1 st Complete mineral MV ws 2 nd Add to your booklet ( add 3 pages, 2 terms per page draw and color pictures) 1. How rocks are classified? P.341 Draw Breccia 2. Color p Texture p Grain p Igneous rock p Intrusive rock p..342 draw granite 7. Extrusive rock p.342 draw basalt 8. Sedimentary rock p. 343 draw figure 17 C 9. Sediment p. 343 draw sand 10. Erosion p.343 draw it raining 11. Deposition p. 343 A 12. Metamorphic rock p. 345 sandstone to quartzite

Physical Properties of Minerals (can be used to identify the mineral) Luster Surface reflection metallic = shiny like metal non-metallic = dull, non-shiny surface Pyrite has a metallic luster Calcite has a non-metallic luster

Physical Properties of Minerals (can be used to identify the mineral) Hardness How easily a mineral scratches materials Mohs Hardness Scale Scale from 1 (softest) to 10 (hardest) Test by seeing if the mineral can scratch different objects (like human fingernail, copper, penny, glass, steel file)

Wed 1/21 2. What is a “Carat”? One carat weighs 200 milligrams, or one-fifth (.2) of a gram. This standard has been in use worldwide since 1914, when it was proposed by the International Committee on Weights and Measures.

Fri 1/22 3. Name the mineral. Can be scratched by Topaz but not Feldspar. Quartz

Mon 1/25 What happens when a mineral breaks?

Tue 1/26 Why is a minerals streak more reliable than color? Streak is the same, even if different color.

Thur 1/28 How do minerals form?

What is the difference between a rock and a mineral?

Fri 1/22 3. Name the mineral. Can be scratched by Topaz but not Feldspar. Quartz

Physical Properties of Minerals (can be used to identify the mineral) Color Can be misleading Can vary with the type of impurities

Physical Properties of Minerals (can be used to identify the mineral) Streak The color of the powdered form of the mineral The color of the streak can be different than the mineral Minerals must be softer than the streak plate

Physical Properties of Minerals (can be used to identify the mineral) Luster Surface reflection metallic = shiny like metal non-metallic = dull, non-shiny surface Pyrite has a metallic luster Calcite has a non-metallic luster

Mon 1/25 What happens when minerals break?

How do minerals form? 1) Cooling of magma (hot, liquid rock and minerals inside the earth (from the mantle)) – Fast Cooling = No Crystals (mineraloids) – Medium Cooling = small crystals – Slow Cooling = large crystals

How do minerals form? 2) Elements dissolved in liquids (usually water)