Brick

Easy to obtain
Brick specimen - rock identification

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

Brick Market Value Calculator

Estimate the market value of Brick using size, quality, and finish. This preview calculator is for quick context and is not a formal appraisal.

Preview only. Full pricing comps and valuation report in the app.

Brick Localities Map

See where Brick is found with a localities map, collecting zones, and geology context. Generate a sample map preview below.

Map preview
North ZoneCentral RidgeSouth Basin

Interactive map layers and collecting notes are available in the app.

More Images

Brick specimen 2
© Sabina Bajracharya

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

BrickBuilding Brick
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