Minerals Chapter 2 Class Notes

9/28/12 Students will be able to describe that rocks are made of minerals.

Rock vs. Mineral Investigation

1) Observe using hand lens a rock and mineral specimen 2) Sketch in pencil (use color pencils to capture colors) Make your observations as detailed as possible 3) Write three detailed observations

Quartz Sketch Franklinite Sketch

10/1/12

Students will be able to name the 3 minerals that make up the rock Granite.

Salt Crystal (NaCl)

Rocks are mixture of minerals.

The Rock Granite is composed of Mica, Quartz, and Feldspar minerals.

Red = Feldspar Black = Mica White = Quartz 10/18/12 Objective – Students will be able to explain the relationship between elements as resources, minerals, ores, and mining.

Ore - A rock that contains enough of a valuable mineral to be mined for a profit. Streak – The color of a mineral powder left behind when a mineral is scraped across a surface. A method for classifying minerals.

Luster – the way in which light reflects from a minerals surface, a measurement of the amount of metal a mineral contains.

Streak Plate – a piece of un-glazed porcelain, that is used to test the color of the powdered form of a mineral.

10/11/12 Objective – Students will apply their understanding of color, streak, and luster to analyze rock and mineral samples.

Cleavage – the property of a mineral that describes its tenency to break along flat surfaces.

Fracture – the tendency of a mineral to break into irregular pieces

Density – a property of matter representing the mass per unit of volume

Mineral Investigation

Mineral # Color Streak Luster 1 Black Black Non-metalic 2 Brownish pink with black spots White Non-metalic 3 Grey Grey Metalic 4 White None Non-metalic 5 Blue/black/white Black/grey Non-metalic

10/12/12 Objective – Students will be able to apply their understanding of cleavage and fracture to classify some sample minerals

Examples of Cleavage –

Muscovite Calcite

10/17/12 Objective – Students will be able to complete simple density calculations

Density (g/cm3) = Mass (g/cm3) ------Volume (cm3)

10/18/12 Objective – Students will be able to name the 10 minerals that compose the Mohs hardness scale

Mohs Hardness Scale

Rating Test Mineral (Book) 1 Talc 2 Selenite (Gypsum) 3 Calcite 4 Fluorite 5 Apatite 6 Microcline (Feldspar) 7 Quartz 8 Topaz 9 Corundum 10 Diamond