Definitions
Mohs Hardness scale
Minerals
Identification of Minerals
Physical properties of minerals
100
They are naturally occurring with specific chemical composition and atomic structure.
What are minerals?
100
this mineral is the last in the Mohs hardness test.
What is Corundum?
100
What is calcite?
100
x=mass/volume
What is density?
100
Nerve ending reaction in the tongue to different chemicals.
What is taste?
200
When light reflected from the mineral.
What is luster?
200
In 1812 German mineralogist Friedrich Mohs first suggested Mohs scale of mineral hardness but wasn't formally introduced till when?
What is 1822?
200
What is halite?
200
This is what the mineral leaves when it is ground to a powder
What is streak?
200
This mineral's chemical composition name is K(Mg,Fe)AlSi3 O10(OH)2, a hardness of 2.5, and is brown to black in color.
What is biotite (mica)?
300
The planes of weakness in the crystal structure.
What is cleavage?
300
This is a way to measure the relative hardness of minerals by comparing them to other substances with known hardness
What is Mohs Hardness Scale?
300
What is sulfur?
300
It can be vitreous, satiny, silky, or earthy.
What is nonmetallic luster?
300
This mineral has a bright luster, yellow in color, very soft, and has a conchoidal fracture.
What is sulfur?
400
Repeating 3 dimensional arrangement of atoms, ions, or molecules within a minera
what is crystal structure?
400
Named after a German geologist and mineralogist.
Who is Friedrich Mohs?
400
What is fluorite?
400
x=density of a material/density of water at 4C
What is specific gravity?
400
D= 2.7 to 3.2 for most minerals, D= 2 to 2.5 for light minerals, and D= 3.5 to 7.5 for heavy minerals.
What is density?
500
Minerals that lack plates of lattic weakness due to equal molecular bonds in all directions.
What is fracture?
500
This mineral cannot be scratched by a fingernail but can be scratched by a penny
What is calcite?
500
What is galena?
500
Has a shiny appearance that resembles polished metal
What is metallic luster?
500
The ratio of the mass of a mineral to the mass of an equal volume of water.
What is specific gravity?