This is what you see on the outside of the mineral. This test is not as reliable as streak.
Color
What is the softest mineral and what is its rating?
Talc (1)
What are the 4 characteristics that a mineral must have?
1. naturally occurring (not man-made)
2. crystalline structure (repeating pattern of atoms)
3. Inorganic (not living/never living)
4. solid
If a mineral is very shiny and reflects a lot of light then its luster is known as?
Metallic
A mineral is always this, meaning it has a definite shape and volume.
Solid
This test describes the color of a mineral's powdered form.
Streak
Topaz, Corundum, Diamond
What does metallic, submetallic, and non-metallic describe?
luster
If a mineral is very dull then its luster is known as?
non-metallic
This term describes how a mineral's surface reflects light.
Luster
Why would you not want to make a driveway out of a mineral with a 2 on the Moh’s scale?
The car would leave tracks and break the driveway.
What type of test is used to determining the hardness of a mineral?
scratch test
What mineral possess the special property of magnetism, meaning they are attracted to magnets?
magnetite
This characteristic means a mineral has structures that have repeating patterns of molecules creating flat faces and edges.
Crystalline structure
This characteristic describes how a mineral breaks off easily along smooth, flat surfaces.
Cleavage
This mineral can scratch fluorite but it cannot scratch Feldspar. What am I?
Apatite
What type of test is used to determine the powdered form of a mineral?
Streak test
What special property can some minerals show under a black-light?
Fluorescence. (Glowing)
Is coal a mineral? Explain your answer.
No, coal is a fossil fuel which means it came from something that was once living making it ORGANIC not inorganic.
The tendency of a mineral to break unevenly along a curved or irregular surface.
Fracture
This mineral can scratch Talc but it cannot scratch calcite. What am I?
Gypsum
Halie (salty taste)
A friend needs help identifying a mineral. Describe 4 characteristics that you would look for.
Naturally occurring, crystalline structure, inorganic, solid. Run the property test such as luster, streak, hardness, cleavage, etc.