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Holt Earth Science Chapter 5
Minerals and Crystals
30
Geology
11th Grade
01/28/2013

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Cards

Term
What are the two main groups of minerals?
Definition
Silicate and Nonsilicate
Term
Which are nonsilicate crystalline structures?
Definition
Cubes, Hexagonal Prisms, Irregular Masses
Term
A double-chain silicate is
Definition
Two bonded single-chains
Term
What two elements must be present in a silicate?
Definition
Silicon and Oxygen
Term
Group of only minerals?
Definition
Fluorite, Feldspar, Copper
Term
Which of the following are chatoyancy and asterism associated with?
Definition
Cat's Eye and Star
Term
A mineral is described as fluorescent when it?
Definition
Glows under ultraviolet light
Term
What mineral property involves iron?
Definition
Magnetism
Term
Because many minerals are similar in color and certain elements may change the color, color....
Definition
Is not a good identifer
Term
Unstable atomic nuclei decay over time into stable nuclei, causing a mineral to be?
Definition
Radioactive
Term
What is chatoyancy?
Definition
Mineral shows a cat's-eye effect
Term
A phosphorescent mineral glows....
Definition
After an ultraviolet light is turned off
Term
Isolated tetrahedra....
Definition
Do not link with silicon or oxygen atoms
Term
What is asterism?
Definition
A six-sided star shape appears when a mineral reflects light
Term
Double-chain silicates are formed when?
Definition
Two single-chains of tetrahedra bond to each other
Term
Cubes, hexagonal prisms, and irregular masses are examples of....
Definition
Three common nonsilicate crystalline
Term
When each tetrahedron shares three of its oxygen atoms with other tetrahedra....
Definition
Sheet silicates are formed
Term
What is NOT one of the four criteria for determining wheter or not a substance is a mineral?
Definition
It has a shiny surface
Term
What is radioactivity?
Definition
Unstable atomic nuclei decay over time. releaseing particles and energy
Term
The color of a mineral in powdered form is called the mineral's....
Definition
Streak
Term
A mineral is a natural solid that usually is....
Definition
Inorganic, with characteristic physical properties
Term
Single-chain silicates are silicate crystalline structures in which tetrahedra form a....
Definition
Chain by sharing oxygen atoms
Term
The hardest mineral on the Mohs Hardness scale is?
Definition
Diamond
Term
Fluorescence is the property of a mineral that causes it to?
Definition
Glow under ultraviolet light
Term
Density is the ratio of?
Definition
The mass of a substance to the volume of the substance
Term
What is true of isolated tetrahedra?
Definition
They do not link with other silicon or oxygen atoms
Term
Double-chain silicates form when?
Definition
Two single-chains of tetrahedra bond to each other
Term
Common nonsilicate crystalline structures?
Definition
Cubes, Hexagonal Prisms, Octahedral Prisms, Irregular Masses
Term
Light that is reflected from a mineral's surface is called?
Definition
Luster
Term
Clevage is the tendency of a mineral to?
Definition
Spilt along specific planes, forming flat surfaces
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