Crystals and Minerals

Mineral Properties:

1.Luster - Metallic or Non-Metallic.

2. Hardness - A measure of how easily of mineral scratches.

3.Color - The color that the mineral looks like.

4. Streak - Powder color of a mineral.

5. Cleavage - Mineral that breaks evenly.

6. Fracture - Mineral that breaks unevenly.

7. Composition - What is inside of the mineral.

8. Other Properties - Ex. Magnetic 

Mineral Identification:

Mineral - Bornite

 Luster -  Metallic

Hardness -  3

Color - Bronze brown, Purple, little red.

Streak - Grayish Black

Composition -  Cu5 FeS₄

Fracture (Unevenly)

Other Properties - Magnetic after heating

Mineral - Limonite

 Luster -  Non Metallic

Hardness -  4

Color - Brown and yellow

Streak - Yellowish brown

Composition -  FeO(OH)·nH₂O

Fracture (Unevenly)

Other Properties -  Non Magnetic