Flashcards
The shape of a crystal comes from their?
Structure
What is a Crystal?
A crystal is a solid whose atoms or other components appear in a regular, repeating pattern.
What is the Matter around composed of?
The matter around you is made of atoms of various elements. An element is a substance that cannot be broken into simpler substances by chemical means.
What are the most common elements in the Earth’s’ CRUST?
The most common elements in the Earth’s Crust are Oxygen and silicone
What is a Mineral
A mineral is a solid substance that has a characteristic chemical composition
Occurs naturally
All minerals can be found in nature. Although diamonds can be made in a lab, they are still minerals because they also occur naturally.
Inorganic
If a compound forms only through biological processes, then it is not a mineral. Calcite often forms through biological processes, such as the formation of shells.
Solid
Although ice is a mineral, liquid water is not.
Has a specific chemical composition
Minerals are elements or compounds. You can write a chemical formula to describe their composition. Most rocks, on the other hand, are mixtures of minerals. You can’t write a single chemical formula for a rock.
Has a definite crystalline structure
The atoms in a mineral are arranged in a specific and repeating pattern. Opal has a similar composition to quartz, but its atoms are not arranged in a specific, repeating pattern, so it is not considered to be a true mineral.
How do you tell the size of the crystals
The Size of crystals is determined by how fast the magma cools or hardens.
How do you tell the size of the crystals
The Size of crystals is determined by how fast the magma cools or hardens.
Luster
The appearance of a mineral surface in terms of its light-reflective qualities.
Transparency
When light encounters transparent materials, almost all of it passes directly through them. Materials like air, water, and clear glass are called transparent.
Shape
The form of an object or its outline, outer boundary or outer surface.
Color
The quality of an object or substance with respect to light reflected by the object, usually determined visually by measurement of hue, saturation, and brightness of the reflected light; saturation or chroma; hue.
Streak
The colour of a mineral in its powdered form
cleavage
Tendency of a crystalline substance to split into fragments bounded by plane surfaces.
fracture
A fracture is a break, usually in a bone.
Hardness
The resistance of a material to localised plastic deformation
Saturation
Full to capacity
Crystallize
It Hardens
Of the 92 naturally occurring elements on earth how many still exist?
Only 19 exist as native element minerals.
What is a compound
A thing that is composed of two or more separate elements; a mixture.
