Efflorescence

This is efflorescence from the concrete in an elementary school gymnasium. It was believed to be mold and was going to be remediated. It is primarily calcium sulfate dihydrate (gypsum). These crystals were formed by taking the material back up in deionized water and allowing the water to evaporate.

Transmitted Off Crossed Circular Polarized Light

Definition/Function:

Efflorescence is a white crust or fibrous growth from cement products or bricks as a result of moisture. It tends to be dominated by sulfates and carbonates of calcium and/or sodium.

Efflorescence

This is efflorescence from the concrete in an elementary school gymnasium. It was believed to be mold and was going to be remediated. It is primarily calcium sulfate dihydrate (gypsum). These crystals were formed by taking the material back up in deionized water and allowing the water to evaporate.

Definition/Function:

Significance in the Environment:

Characteristic Features:

Associated Particles:

References: