Take out homework and reference table Which graph

Take out homework and reference table!

Which graph correctly represents the three most abundant elements, by mass, in Earth’s crust?

Ore of lead, Batteries Ore of Sulfur Ore or iron, jewelry

5) Which family contains the two most abundant elements BY MASS found in Earth’s crust? Silicates

6) Name the following elements: Mg Fe Magnesium Iron Na Sodium

8) Page 6 of the ESRT also makes reference to minerals and elements. Which four elements are referred to?

The most abundant metallic element by mass in Earth’s crust makes up 8. 23% of the crust. Which group of minerals all normally contain this metallic element in their compositions? (1) garnet, calcite, pyrite, and galena (2) talc, quartz, graphite, and olivine (3) plagioclase feldspar, amphibole, pyroxene, and potassium feldspar (4) biotite mica, muscovite mica, fluorite, and halite

The internal arrangement of atoms in a mineral give it certain properties that help us identify it.

Mineral Properties Property Hardness Description Representatives Quartz scratches glass (greater than 5. 5) Minerals are scratched against each other. We use glass which has a Calcite does not (less hardness of 5. 5 then or equal to 5. 5)

Which mineral scratches dolomite and is scratched by olivine? (1) galena (2) quartz (3) potassium feldspar (4) muscovite mica Hardness 6. 5 Hardness 3. 5

Mineral Properties Diagram Property Cleavage Description Representatives The way certain Mica cleaves into minerals break flat, thin sheets along flat surfaces Halite forms small cubes when broken

Mineral Properties Property Fracture Description Representatives The way certain minerals break in an irregular pattern Quartz

Mineral Properties Property Streak Description Representatives The color of the powder Hematite leaves a of the mineral when it is _____ stream rubbed on a porcelain tile

Mineral Properties Property Description Luster Representatives The way light is reflected Graphite has a metallic from the surface luster Can be metallic or nonmetallic Quartz has a nonmetallic luster

Mineral Properties Property Color Description Representatives The color (duhhh) Graphite is silver/gray Quartz is…. . . Clear, purple, pink, green, black. . . NOT A RELIABLE SOURCE WHEN IDENTIFYING MINERALS

7) Which mineral has almost the same chemical composition as Potassium Feldspar (Orthoclase)? Potassium Feldspar KAl. Si 3 O 8 Plagioclase feldspar (Na, Ca)Al. Si 3 O 8