Rock Identifier
Amazonite (Microcline (KAlSi3O8) with trace lead (Pb)) — mineral
mineral

Amazonite

Microcline (KAlSi3O8) with trace lead (Pb)

Hardness: 6-6.5 (Mohs), Color: Pale green to blue-green, Luster: Vitreous to pearly, Crystal structure: Triclinic, Cleavage: Perfect in two directions.

Hardness
6-6
Identified More mineral

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Physical properties

Hardness: 6-6.5 (Mohs), Color: Pale green to blue-green, Luster: Vitreous to pearly, Crystal structure: Triclinic, Cleavage: Perfect in two directions.

Formation & geological history

Formed in plutonic igneous rocks such as pegmatites and granites. The green color is often caused by lead impurities and water in the feldspar structure.

Uses & applications

Primarily used as a gemstone for jewelry, ornamental carvings, and as a popular lapidary material for collectors.

Geological facts

Amazonite is often called 'Amazon Stone,' though it is not found in the Amazon River itself; it was named as such because similar green stones were found in that region.

Field identification & locations

Identify by its distinct green to turquoise color and characteristic white streaks (perthitic textures). Found in Colorado (USA), Brazil, and Russia.