Minerals identify

Know how to recognize them

Aragonite

Carbonate mineral

Aragonite is a carbonate mineral , one of the three most common naturally occurring crystal forms of calcium carbonate 3 (the other forms being the minerals and vaterite ). It is formed by biological and physical processes, including precipitation from marine and freshwater environments.

The crystal lattice of aragonite differs from that of calcite, resulting in a different crystal shape, an orthorhombic crystal system with acicular crystal results in pseudo-hexagonal forms. Aragonite may be columnar or fibrous, occasionally in branching helictitic forms called flos-ferri ("flowers of iron") from their association with the ores at the Carinthian iron mines.

Identification

Color of mineral

White
Red
Yellow
Orange
Green
Purple
Grey
Brown
Blue

Mohs scale ( mineral hardness )

3.5
4

Density ( specific gravity )

1.529
1.68
1.685

Luster ( interacts light )

Vitreous
Resinous

Crystal ( diaphaneity )

Orthorhombic