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Amazonite

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Member of:Feldspar Group
Name: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.

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Classification of Amazonite

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Relationship of Amazonite to other Species

Member of:Feldspar Group
Other Members of Group:

- +
Albite
NaAlSi
 
3
O
 
8
Andesine
(Na,Ca)[Al(Si,Al)Si
 
2
O
 
8
]
Anorthite
CaAl
 
2
Si
 
2
O
 
8
Anorthoclase
(Na,K)AlSi
 
3
O
 
8
Banalsite
BaNa
 
2
[Al
 
2
Si
 
2
O
 
8
]
 
2
Buddingtonite
(NH
 
4
)AlSi
 
3
O
 
8
Bytownite
(Ca,Na)[Al(Al,Si)Si
 
2
O
 
8
]
Celsian
BaAl
 
2
Si
 
2
O
 
8
Dmisteinbergite
CaAl
 
2
Si
 
2
O
 
8
Hyalophane
(K,Ba)[Al(Si,Al)Si
 
2
O
 
8
]
Labradorite
(Ca,Na)[Al(Al,Si)Si
 
2
O
 
8
]
Microcline
KAlSi
 
3
O
 
8
Oligoclase
(Na,Ca)[Al(Si,Al)Si
 
2
O
 
8
]
Orthoclase
KAlSi
 
3
O
 
8
Paracelsian
BaAl
 
2
Si
 
2
O
 
8
Reedmergnerite
Na[BSi
 
3
O
 
8
]
Sanidine
KAlSi
 
3
O
 
8
Slawsonite
(Sr,Ca)Al
 
2
Si
 
2
O
 
8
Stronalsite
SrNa
 
2
[Al
 
2
Si
 
2
O
 
8
]
 
2
Svyatoslavite
CaAl
 
2
Si
 
2
O
 
8

Other Names for Amazonite

Synonyms:
Amazon JadeAmazon Stone
Other Languages:
Dutch:Amazoniet
Estonian:Amasoniit
French:Amazonite
German:Amazonit
Hebrew:אמאזוניט
Lithuanian:Amazonitas
Polish:Amazonit
Portuguese:Amazonita
Russian:Амазонит
Simplified Chinese:天河石
Spanish:Amazonita
Swedish:Amazonsten
Thai:แอมะซอไนต์
Traditional Chinese:天河石
Ukrainian:Амазоніт

Other Information

Health Warning: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

Search Engines:
  • Look for Amazonite on Google
  • Look for Amazonite images on Google
  • Mineral Dealers:
  • DAKOTA MATRIX offers Cabinet and Rare Species from Worldwide Localities.
  • Buy from McDougall Minerals
  • Wilensky Fine Minerals
  • High-end worldwide specimens & outstanding customer service
  • Amazonite specimens for sale - minfind.com
  • Find Amazonite on www.crystalclassics.co.uk
  • SpiriferMinerals.com - high quality low prices
  • The Arkenstone - Fine Minerals
  • Buy fine minerals and gemstones from Pala International
  • Buy RARE Minerals from Rocks of Africa
  • Buy from Dave Bunk Minerals
  • Buy rare minerals from Excalibur Minerals
  • Specimens:The following Amazonite specimens are currently listed for sale on minfind.com.

    Localities for Amazonite

    The 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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