Minerals – Ch 5Minerals – Ch 5Terms Properties Groups Identification Random

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The mass of a substance to the volume is its ____

Answer

Density

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The ability of a mineral to resist scratching is its _____

Answer

Hardness

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Tendency of a mineral to break and form uneven, irregular surfaces

Answer

Fracture

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An inorganic solid with characteristic chemical

composition and physical properties

Answer

Mineral

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Fluorite and Halite belong to what mineral group?

Answer

Halides

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The way that light is reflected from a mineral’s surface

Answer

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Luster

True/False: Chatoyancy means “cat’s eye” and has

a silky appearance

Answer

True

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What is the color of a mineral in a powdered

form?

Answer

Streak

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What physical property is unreliable as an

identification clue for minerals?

Answer

Color

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What is the tendency of a mineral to split along specific planes, forming flat surfaces?

Answer

Cleavage

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A solid whose atoms, ions, or molecules are arranged in a regular,

repeating pattern

Answer

Crystal

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What are the 2 main groups of minerals?

Answer

Silicates or Non-silicates

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Minerals are usually _____, meaning they do

not contain carbon

Answer

Inorganic

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Mineral that does not contain silicon and oxygen

(SiO2)

Answer

Nonsilicate

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Mineral that contains silicon and oxygen

compounds

Answer

Silicate

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Answer

True or False:

A mineral that glows in ultraviolet light is phosphorescent

False (fluorescent)

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Oxides, Sulfides, Halides, Carbonates, and Sulfates are all major classes of

what group of minerals?

Answer

Nonsilicate Minerals

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Cubes, hexagonal prisms, and irregular masses are common

mineral structures for what group of

minerals?

Answer

Nonsilicate Minerals

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If an unstable atomic nuclei decays into stable nuclei, the mineral is ____.

Answer

Radioactive

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Answer

What are 3 physical properties mineralogists use to identify

minerals?

Color, streak, hardness, luster, cleavage, fracture,

density, crystal shape

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What class of minerals is the most common on Earth?

Answer

Silicates

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What is the softest mineral on the Moh’s hardness scale?

Answer

Talc

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True/False:

Quartz and Amethyst are examples of Nonsilicate

Minerals

Answer

False; they are Silicates!

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True/False:

Hematite is an example of a mineral in the Oxide group

Answer

True

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True/False:

Galena and Mica both have fracture

Answer

False

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