Mineral Properties
What tool is used to determine a mineral's streak?
porcelain tile
What process causes minerals to form in a shallow lake during dry, hot conditions?
Evaporation
What do we call a rock that contains enough of a desired substance that it can be mined for a profit?
ore
What is one of the softest minerals on Earth and usually a 1 on the Moh's hardness scale?
Talc
Minerals cannot be organic. Explain this.
They cannot come from living organisms.
Dull, waxy, vitreous, and pearly are all words that can be used to describe a mineral's ____________________.
luster
What process causes the crystallization of minerals from magma.
Cooling
Besides jewelry name one of the most important uses for diamonds.
used in grinding and cutting tools
The Moh's hardness scale compares the hardness of different minerals. It ranks them from the numbers ___ to ___.
1 to 10
Explain how to find the density of a mineral.
Take the minerals mass and divide it by the volume.
What two physical properties result from the way that light interacts with the surface of a mineral?
Color/Luster
If a substance has a repeated pattern of orderly arranged atoms then it will likely have _________________, which is one of the 5 characteristics of minerals.
DAILY DOUBLE!!!
crystals
A rare and attractive mineral that can be worn as jewelry is known as a ______________________.
Gemstone
A mineral that can scratch quartz would have a hardness greater than _____.
Seven
If a mineral forms an uneven, irregular surface when it breaks it is said to have ____________________, not cleavage.
Fracture
If someone was scratching a piece of glass with a mineral they would be testing which property of that mineral?
Hardness
What mineral group would the following mineral belong to KAlSi3O8?
Silicate because it contains the elements Silicon and Oxygen
Aluminum is extracted from this ore?
Bauxite
If a mineral exhibits good cleavage what characteristics would it have?
smooth, flat sides
If a mine produces 5,000 kg of iron from 10,000 kg of iron ore what is the % yield?
50%
What mineral property should be used if trying to identify a sample of hematite?
Streak - it always streaks reddish brown
Molten rock located above the surface of the ground is called lava. Below the surface it would be called ____________________.
Magma
What is the most common silicate mineral found in Earth's crust?
Feldspar
A mineral is capable of scratching a penny, but not capable of scratching glass. What is the hardness of the mineral?
somewhere between 3.0 - 5.5
Name the five characteristics that all minerals have to have to be considered a mineral.
DAILY DOUBLE!!!
1. naturally occurring 2. inorganic 3. definite chemical composition 4. crystal structure 5. solid only