Mineal and Cystal

1. crystals summary
In Crystal Growth lab, we learned rocks formed by minerals.Minerals are formed by evaporating and crystallized(dissolve in water).Mineral at least has the 3 or more than 3 rocks. Then we started the experiments. We made a solution by mixing the minerals with water at frist. Then we waited because we needed to let the minerals to grow. The minerals became thecrystal. Crystal is a solid object that has three or more sides. If doesn't disslove even has more starring. This means the solution is saturated.

 2.mineral proberty

-color: green,blue,red,brown,etc

- Luster : Metalli and non-metallic


Metallic luster

-Streak: color of mineral

-Hardness: scale 1-10


-Cleavege: evenly

-Fracture: unevenly

-Composition: chemicals of minerals

3.Mineral identification
Talc：Non-metallic luster- look like metal
white to green
Cleavage
Streak- White to green

Galena:Metalic
Silver to gray colors
cleavage