Intro

Objective 11/16/11Identify minerals.

•Check and Hand-in Missing Assignments•Write Q&A:• What do you think are some ways to identify a

mineral by?

Identifying Minerals

MINERALS 7 Ways to

Identify Minerals Color Luster Streak Fracture Texture Density Hardness

MINERALS Color Describes the color

that a mineral appears to be in regular light

MINERALS Luster How shiny a

mineral isHighMediumDull

MINERALS Streak The color that a

mineral leaves on a streak-plate

MINERALS Fracture How easily a

mineral breaks cleanly

MINERALS Texture How rough or

smooth the mineral isRoughMediumSmooth

MINERALS Density How much material

makes up a mineralMass ÷ Volume =

Density

MINERALS Hardness Tested by scratching

the mineral with a fingernail, penny, or steel nail.

Moh’s Hardness ScaleRanked 1 to 1010 is the hardest

MINERALS Moh’s Hardness

Scale identifies a minerals hardness by comparing it to another object or mineral

Objective 11/16/11

Outro

Identify minerals.

Of the 7 ways to identify minerals, which one is the least helpful? Why?