Bellwork 10-28-13Obj: SWBAT explain the properties that are used

in classify minerals.

1. What comes to mind when you see this picture?

2. List as many minerals(at LEAST 2) that you can think of.(example: gemstones)

What is a mineral?1. Must be naturally

occurring

2. Must be a solid

3. Must have a chemical composition

4. Cannot be organicWhat does that mean?

5. Have a defined crystalline structure

How do we ID a mineral?With a partner developed

some ways that you could categorize or separate different minerals?

How do we ID a mineral?Scientists use mineral

properties to ID minerals,Some of these properties include:

ColorStreakCleavageLusterHardness

Mineral ColorDescribe the color of the

mineral

Azurite is blue

Corundum (ruby) is red

Mineral StreakDescribe the color of the streak on a piece of porcelain.

Hematite has a RED streak

Mineral Cleavage Cleavage is the tendency of a mineral to cleave, or break, along flat, even surfaces.

Salt has CUBIC cleavage

Gypsum has ONE plane of cleavage

Mineral Luster Luster is used to describe how light is reflected from the surface of a mineral.Luster can be:

MetallicEarthyGlassy

Mineral HARDNESSHardness is a measure of the resistance of a mineral to being scratched.-It is measured on a scale from 1 to 10

-Your finger nail has a hardness of 2-2.5-A copper penny has a hardness of 3.5 -A iron nail has a hardness of 4.5 -Glass has a hardness of 5.5 -Minerals that are harder can SCRATCH other softer minerals

Bellwork 11-4-13Obj: SWBAT explain the properties that are used in

classifying minerals and apply the hardness test.

1. Is Jell-O a mineral? What classifies a mineral?

2. What are the 5 properties of minerals we have taken notes on, explain each.

1 10

Mineral Properties:The Hardness scale

Talc Diamond

#1 on the hardness scale-Talc and graphite have a hardness

of one.

#2 on the hardness scale

-Gypsum has a hardness of 2

-Gypsum is used for drywall (sheetrock)

#3 on the hardness scale

-Calcite and Native Copper have a hardness of 3.

-Calcite is used to make concrete!

#4 on the hardness scale-Fluorite has a hardness of 4

Fluorite is used to make the active ingredient in toothpaste (NaF)

#5 on the hardness scale-Apatite and hematite have a

hardness of 5

Hematite beads Your teeth are made of hydroxyl apatite!

#6 on the hardness scale-Feldspar and Pyrite have a

hardness of 6

*Chalcopyrite is an important ore of Copper

#7 on the hardness scaleQuartz has a hardness of 7, and is

used to make glass, watches, lasers, abrasives, and many other things!

#8 on the hardness scale

Topaz has a hardness of 8

Topaz occurs in many colors and is used as a gemstone (Novembers birthstone)

#9 on the hardness scale

Corundum has a hardness of 9.Corundum is the gemstone ruby and sapphire, it is also used to make sandpaper and abrasives

#10 on the hardness scale

-Diamond is the ONLY mineral to have a hardness of 10.