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Named in 1847 by Johann Friedrich August Breithaupt for an unspecified type locality area "near" the the Amazon River.
A variety of Microcline

A green to blue-green variety of K-feldspar, usually microcline, but sometimes applied to orthoclase.

The color is usually caused by an elevated content of Pb (up to 1.2% PbO, see list of references).
However, there are also indications that the green color of some microcline is caused by divalent Fe (Szuzkiewicz & Körber, 2010). Overenthusiastic uses of this name include giving this name to slightly gray-green hues in microcline that are often photosensitive and turn from greenish gray to light smoky gray. Sunlight can sometimes enrich the color of genuine amazonite.

Visit for gemological information about Amazonite.

Classification of Amazonite URL:
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Relationship of Amazonite to other Species

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Other Names for Amazonite

Name in Other Languages:
Simplified Chinese:天河石
Traditional Chinese:天河石

Other Information

Health Risks:
No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.

References for Amazonite

Reference List:
Arnaudov, V.; Pavlova, M.; Petrusenko, Sv. (1967): Lead content in certain amazonites. Izvestiya na Geologicheskiya Institut, Bulgarska Akademiya na Naukite 16, 41-44 (in Bulgarian).

Plyusnin, G. S. (1969): Color of amazonites. Zapiski Vsesoyuznogo Mineralogicheskogo Obshchestva 98, 3-17 (in Russian).

Cech, F., Misar, Z., Povondra, P. (1971): Green lead-containing orthoclase. Tschermaks Mineralogische und Petrographische Mitteilungen 15, 213-231.

Foord, E. E. & Martin, R. F. (1979): Amazonite from the Pikes Peak batholith. Mineralogical Record 10, 373-380; 382-384.

Platonov, A. N., Tarashchan, A. N. & Taran, M. N. (1984): Color centers in amazonites. Mineralogicheskii Zhurnal 6, 3-16 (in Russian).

Hofmeister, A. M. & Rossman, G. R. (1985): A spectroscopic study of irradiation coloring of amazonite: structurally hydrous, lead-bearing feldspar. American Mineralogist, 70, 794-804.

Stevenson, R. K. & Martin, R. F. (1986): Implications of the presence of amazonite in the Broken Hill and Geco metamorphosed sulfide deposits. Canadian Mineralogist 24, 729-745.

Petrov, I., Mineeva, R. M., Bershov, L. V., Agel, A. (1993): EPR of lead-lead mixed valence pairs in amazonite-type microcline. American Mineralogist 78, 500-510.

Julg, A. (1998): A theoretical study of the absorption spectra of Pb+ and Pb3+ in site K+ of microcline: application to the color of amazonite. Physics and Chemistry of Minerals 25, 229-233.

Murakami, H., Takashima, I., Nishida, N., Shimoda, S., Matsubara, S. (2000): Solubility and behavior of lead in green orthoclase (amazonite) from Broken Hill, New South Wales, Australia. Ganko 95, 71-84.

Szuzkiewicz, A. & Körber, T. (2010): "Amazonit" oder "Grüner Mikroklin"? Zur Ursache der Grünfärbung von Kalifeldspäten aus dem Striegauer Granit. Lapis 35 (7-8), 75-77; 86 (in German).

Internet Links for Amazonite

The following Amazonite specimens are currently listed for sale on

Localities for Amazonite

map shows a selection of localities that have latitude and longitude coordinates recorded. Click on the symbol to view information about a locality. The symbol next to localities in the list can be used to jump to that position on the map.
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