C.K.K.K.+4.1

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=Section 1 (4-1) Properties of Minerals=

**Vocabulary**
inorganic- not made or rised from that in the past was alive. crystal- a mineral which repeats a pattern of mineral's particles. element- a substance that is made up of a single atom. compound- a mineral in which two different element are joined together and they no longer have distinct properties. Mohs hardness scale- a scale which ranks minerals from softest to hardest in ten ranks. streak- the color of a minerals powder. luster- a word that describes how a mineral reflects light of its surface. cleavage- a minerals property that allows it to split easily along flat surfaces. fracture- the breaking of a mineral in an irregular way. fluorescence- the property of a mineral that allows it to glow under ultra-violet light.

**What is a Mineral?**

 * minerals are/have
 * naturally occuring
 * It can not be made by animal or people such as glass.
 * inorganic
 * It can not come from something alive or part of once alive thing such as coals.
 * solid
 * distinct chemical composition
 * can be identified by physical and chemical properties
 * physical and chemical properties

**Identifying Minerals**

 * hardness
 * determined by Mohs hardness scale
 * The best clue of all of these is the hardness.
 * color
 * Color can not be used to some minerals because they can have different colors or have a same color.
 * streak
 * You look at streak color to find which mineral is it.
 * luster
 * Luster is a term for mineral to reflect the light.
 * The mineral that contains metal is often shiny.
 * density
 * Each mineral has their characteristic density.
 * You look when the minerals break in irregular way.
 * fracture
 * Fracture describes the way mineral looks when broken
 * The mineral which breaks easily is called cleavage.
 * crystal systems
 * There are six kinds of crystal systems.
 * Special Properties
 * Some rocks have special properties.
 * One of the special property is called fluorescence.
 * It is a property which glows in ultra-violet light.

Types of minerals

 * elements
 * compounds