576 PROCEEDINGS OF UNITED STATES NATIONAL MUSEUM. [2] 



Tourmaline : Green, white, yellow, blue, brown, black. Rubellite. 



Spodumene : Violet. Yellow. Hiddenite. 



Chrysolite. 



Zircon : Hyacinth. 



lolite. Idocrase. Andalusite. 



Diopside. Dioptase. Euclase. PhenaJcite. Epidote. 



Axinite. Moldavite. Sphene. 



Feldspar group. Lahradorite : Sunstone. Moonstone. Amazon stone. 



Prehnite : Ohlorastrolite. 



Thorn sonite. 



Lapis lazuli. Chrysocolla. Rhodonite. Serpentine. 



Jadeite. Nephrite. Pipestone. Meerschaum. 



Malachite. 



Turquoise. 



Smithsonite. 



Calcite : Satin spar. Mexican onyx. 



Alabaster. 



Jet. Gannel coal. 



Amber, &c. 



Contributions, either gifts or loans, may be sent addressed to the 

 Department of Mineralogj'^, United States National Museum, Washing- 

 ton. They should be securely packed and carefully labeled, and should 

 arrive as early as November 1, 1884. The foregoing classification is only 

 for suggestions, and does not exclude any mineral not specifically named 

 therein which might possess ornamental or gem value. 



Washington, August 1, 1884. 



