2012年10月29日星期一

Crystals & Minerals

Crystals gorwth
We learned that crystal growth in science class, we were learned two types of crystals. We created a solution by mixing minerals with water. We are get a pencil and tied the string in the middle.We put amount of minerals in a beaker with some water, when the water going heat that we put amount of minerals into the beaker and used tool to mixing it with the water.Finally, we put the beaker next the window and waiting it is cooling.The result is minerals becomes crystal. We were doing same thing with another minerals. We learn temperture affect the crystals growth.


Mineral properties
Luster
metallic- the minerals look like the metal
 nonmetallic - does not look like metal
 
 color -  the surface color of rocks
 streak - the color of minerals that streak in the streak plate
 hardness- a measure soft or hard of rock
cleavage- break of rock in evenly
 fracture- break of rock in unevenly
 composition- some mineral made uo to a  mineral

Mineral Identification
    Sulfur
Luster: nonmetallic
Hardness: 2
It is fracture
Color: yellow
Composition: S


luster: metallic
hardness: 6.5
it is break fracture
color: brassy yellow
composition: FeS2
 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 

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