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Lesson 4

The document provides an overview of minerals, defining them as crystalline elements or compounds formed through geological processes. It outlines key characteristics such as cleavage, specific gravity, crystal structure, hardness, color, streak, transparency, and luster. Additionally, it mentions that there are 6,066 approved mineral species and highlights the significance of gems in jewelry making.

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4 views1 page

Lesson 4

The document provides an overview of minerals, defining them as crystalline elements or compounds formed through geological processes. It outlines key characteristics such as cleavage, specific gravity, crystal structure, hardness, color, streak, transparency, and luster. Additionally, it mentions that there are 6,066 approved mineral species and highlights the significance of gems in jewelry making.

Uploaded by

yannamaureen777
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
Available Formats
Download as PDF, TXT or read online on Scribd
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Earth and Life Science

Lesson 4: Minerals

Minerals - is an element or an chemical compound Cleavage


that is normally crystalline and that has been - refers to the minerals resistance to be broken
formed as a result of geological processes - perfect, good, distinct, poor or indistinct

Has characteristics: Specific Gravity


1. Organic - it describes the minerals density in
2. Solid comparison to the density of water
- can be done using a balance
- 6,066 approved mineral species

Crystal Structure
- describes the orderly geometric spatial
arrangement of atoms in the internal structure
of a mineral

Crystal Habit
- refers to the overall shape of crystal

Hardness
- refers to the minerals resistance to be scratched
- Moh’s scales, common measurement

Color and Streak


- minerals come in different colors especially
GEMS
- gems are rare and used to make jewelry

Transparency and Luster


- mineral is transparent if it allows light to pass
through
- luster indicates how light is reflected off a surface
of a mineral

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