12 



SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. 65 



Color Green 



Corundum 



Diopside. 



Actinolite 



Olivine 



Epidote 



Tourmaline 



Clinochlore 



Serpentine 



Melanterite. 



Manganosite 



Zaratite 



Cabrerite 



Spodumene v a r. 



hiddenite. 

 Beryl var. emerald. 

 Garnet var. de- 



mantoid. 

 Garnet var. uvaro- 



vite. 



Vesuvianite. 



Muscovite var. 



fuchsite. 



Atacamite 



Malachite 



Aurichalcite 



Dioptase 



Chrysocolla 



Tyrolite 



Brochantite 



Natrochalcite 



Imitation emerald 



(Cu-glass). 



Roscoelite 



Calciovolborthite. . 



Fluorite 



Quartz var. chryso- 



prase. 



Spinel 



Chrysoberyl var. 



alexandrite. 



Microcline 



Beryl 



Willemite.. 



Datolite 



Andalusite (gem 



variety). 



Prehnite 



Titanite 



Apatite f . . 



Pyromorphite 



Variscite 



Wavellite 



Coloring 

 elements 



Fe'"+Ti' 



Fe" 



Fe" 



Fe" 



Fe"+Fe" 



Fe" 



Fe" 



Fe" 



Fe" 



Mn" 



Ni" 



Ni" 



Cr"' 



Cr'" 

 Cr"' 



Cr"' 



Cr'" 

 Cr'" 



Cu" 

 Cu" 

 Cu" 

 Cu" 

 Cu" 

 Cu" 

 Cu" 

 Cu" 

 Cu" 



V" 

 V" 



? 



? 



Red 



To 670 



T0670 

 T0650 

 T0670 



To 670 

 ...To 



To 650 



T0650 



T0650 



To 700 

 ...To 

 ...To 



To 680 

 To 680 



To 670 

 To 670 



Orange 



630 



640 

 620 



650 t 



To 



(640) (620) 



(640) (620) 



To 



o575 

 580 



570 



To 

 To 

 To 

 To 

 To 

 To 

 To 

 To 



(650) 



630 



630 

 640 

 640 

 640 

 620 

 630 

 620 



(610 t 



To 620 



...To 

 T0650 

 To 660 



...To 



To 660 

 To 690 



To 660 

 To 670 

 To 660 

 To 660 



To 



To 670 

 To 670 

 To 660 

 To 660 

 To 660 

 To 660 



640 



630-610 

 630 



640 



Yellow 



0580) 



600-570 



Green 



520 



555 525 



Bh 



5OO-49O 



(478) 



on 

 500 



500 

 500 



470 

 510 



500 



500 



500 

 500 

 500 

 490 

 500 

 500 

 500 

 500 

 490 



470 

 510 

 500 



(490) 

 (490-470) 



500 



5io 



500 



5io 

 500 



Violet 



455 440 on 



450 on 



460 on 



(460) 430 on 



458 430 on 

 450 on 

 460 on 

 460 on 

 450 on 



on 

 on 

 on 



on 

 on 



on 

 on 



on 

 on 

 on 

 on 



on 

 on 

 on 

 on 

 on 



on 

 on 

 on 



on 

 on 





450 on 



460 on 

 560 on 



450 on 

 460 on 

 450 on 



450 on 

 450 on 



450 on 



A few green minerals are included in the rare earth and uranium tables. The absorp- 

 tion band shown by manganosite has recently been observed by Ford (Amer. Journ. Sci., 

 vol. 38, 1914, p. 502). 





