Brick
What is Brick?
A rectangular block of fired clay used for construction. Bricks are made from clay, shale, or other materials that are molded and then fired in a kiln. They are a fundamental building material, known for their durability, strength, and resistance to fire. The color and properties of a brick can vary widely depending on the composition of the clay and the firing process.
Optical Properties
- Refractive Index
- Not applicable
- Birefringence
- Not applicable
- Pleochroism
- Not applicable
- Optical Character
- Not applicable
- Dispersion
- Not applicable
Market Value Factors
Pricing varies for every rock and mineral, so use these universal factors to gauge Brick before comparing listings or appraisals.
Size & Weight
Larger, intact specimens usually command higher prices.
Rarity & Demand
Scarce material or popular varieties sell at a premium.
Condition & Finish
Chips, repairs, and heavy wear lower value; clean prep helps.
Treatment & Provenance
Untreated specimens with documented locality are prized.
Brick Localities Map
See where Brick is found with a localities map, collecting zones, and geology context. Generate a sample map preview below.
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Quick Facts
Physical Properties
- Color
- Red, orange, brown, gray, and various other colors depending on the clay composition and firing conditions.
- Hardness (Mohs)
- 3.0 - 5.5
- Density
- 1.6 - 2.6 g/cm³
- Streak
- Variable, depending on the brick's composition.
- Luster
- Dull
- Crystal System
- Amorphous
Chemical Properties
- Chemical Formula
- Variable, primarily based on the composition of clay minerals like kaolinite (Al2Si2O5(OH)4).
- Elements
- Silicon, Aluminum, Oxygen, and various other elements depending on the clay composition.
Also Known As
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Brick FAQs
How do I identify Brick?
Brick can be identified by its hardness of 3.0 - 5.5 on the Mohs scale, Red color, Dull luster, Amorphous crystal system. Look for these key characteristics when examining specimens.
What color is Brick?
Brick typically appears in Red, orange, brown, gray, and various other colors depending on the clay composition and firing conditions.. Color can vary depending on impurities and formation conditions.
How hard is Brick?
Brick has a hardness of 3.0 - 5.5 on the Mohs scale. This makes it a soft mineral that can be scratched easily.