mineral
Amazonite
Amazonite (KAlSi3O8)
Hardness: 6-6.5 (Mohs scale); Color: green to blue-green; Luster: Vitreous; Crystal Structure: Triclinic; Cleavage: Perfect; Specific Gravity: 2.56-2.58
- Hardness
- 6-6
- Color
- green to blue-green
- Luster
- Vitreous
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Physical properties
Hardness: 6-6.5 (Mohs scale); Color: green to blue-green; Luster: Vitreous; Crystal Structure: Triclinic; Cleavage: Perfect; Specific Gravity: 2.56-2.58
Formation & geological history
Formed in igneous environments, specifically granitic pegmatites and hydrothermal veins. Its distinct green color is caused by the presence of lead and water within the feldspar structure.
Uses & applications
Used primarily as a gemstone for jewelry, ornamental carvings, and as a popular specimen for mineral collectors.
Geological facts
Amazonite is a variety of Microcline feldspar. Despite its name, it is not actually found in the Amazon River, though it is found in other parts of Brazil.
Field identification & locations
Identify in the field by its distinct teal or turquoise color and pearly to vitreous luster on cleavage planes. Commonly found in Colorado (USA), Brazil, Russia, and Madagascar.
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Nephrite Jade
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Mineral/Rock
Banded Gneiss (River Rock/Pebble)
Gneiss (specifically a banded variety often found as a river rock)
Metamorphic Rock
![Green Apatite on Albite (Fluorapatite [Ca5(PO4)3F] on Albite [Na(AlSi3O8)]) — mineral](https://media.rockidentification.com/2391a63f-fb20-47d5-af9a-2035851eb32e-thumbnail.jpg)
Green Apatite on Albite
Fluorapatite [Ca5(PO4)3F] on Albite [Na(AlSi3O8)]
mineral