Some amazonite cut from Minas Gerais, Brazil. Gem cutting by Afonso Marques. Photo By Eurico Zimbres Zimbres (talk) 17:34, 14 September 2008 (UTC) (Own work) [CC-BY-SA-3.0], via Wikimedia Commons
Amazonite is a variety of microcline, which is itself a variety of feldspar.
| Data | Value |
|---|---|
| Name | Amazonite |
| Is a Variety of | Microcline |
| Colors | green, blue-green |
| Crystallography | Triclinic. |
| Refractive Index | 1.522-1.530 |
| Luster | Vitreous. |
| Hardness | 6-6.5 |
| Fracture | Uneven to conchoidal |
| Specific Gravity | 2.54-2.63 |
| Birefringence | 0.008 |
| Cleavage | Perfect |
| Luminescence | Weak olive green, possibly medium to faint red SW, yellow-green LW |
| Luminescence Present | Yes |
| Luminescence Type | Fluorescent, UV-Long, UV-Short |
| Typical Treatments | Infusion/Impregnation |
| Transparency | Translucent to opaque. |
| Optics |
Biaxial (-) |
| Optic Sign | Biaxial - |
Comments
Amazonite is a variety of microcline which is a variety of feldspar.
Sources
Brazil; India; United States.
Name
Amazonite is named after the Amazon River basin in South America.
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