*****6th Chapter 3 Test: Minerals

Front

What is a conchoidal fracture?

Back

A conchoidal fracture is a type of break in a mineral that results in smooth, curved surfaces, resembling the shape of a shell.

Front

What mineral is identified by a black streak and conchoidal fracture?

Back

Magnetite.

Front

What does it mean for a mineral to fluoresce?

Back

Fluorescence is the ability of a mineral to emit visible light when exposed to ultraviolet (UV) light.

Front

What is the definition of an ore?

Back

An ore is a mineral that is profitable and useful, typically containing valuable metals or minerals.

Front

How can you recognize sulfur?

Back

Sulfur is easy to recognize because of its lovely odor.

Front

What is hardness in minerals?

Back

Hardness is a measure of a mineral's resistance to being scratched, often determined using the Mohs scale.

Front

What is the Mohs scale?

Back

The Mohs scale is a scale from 1 to 10 that ranks minerals based on their hardness, with talc being the softest (1) and diamond being the hardest (10).

Front

What is the difference between streak and color in minerals?

Back

Streak is the color of a mineral in powdered form, while color is the appearance of the mineral in its solid state.

Front

What is cleavage in minerals?

Back

Cleavage is the tendency of a mineral to break along flat, even surfaces.

Front

What is the significance of a mineral's luster?

Back

Luster describes how a mineral reflects light, which can be metallic, glassy, dull, or pearly.