IO 



SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. 65 



Color Red, Pink or Orange 



Hematite 



Botryogen 



Spherocobaltite 



Erythrite 



Roselite 



Zincite 



Rhodochrosite 



Rhodonite 



Zoisite var. thulite. . . 



Piedmontite 



Tourmaline var. ru- 



bellite. 



Hiibnerite , 



Corundum, pink 

 Corundum var. ruby. 

 Corundum var. ruby, 



synthetic. 

 Garnet var. pyrope 



(see text). 

 Garnet, grossularite, 



pink. 



Crocoite 



Cuprite 



Imitation ruby (Cu- 



glass). 

 Garnet var. alman- 



dite (see text). 

 Garnet var. spessar- 



tite. 



Rutile 



Vanadinite 



Pascoite 



Wulfenite 



Cinnabar 



Realgar 



Proustite 



Pyrargyrite 



Halite 



Fluorite 



Quartz var. rose- 

 quartz. 



Spinel 



Calcite 



Beryl 



Topaz 



Coloring 

 elements 



Fe'" 

 Fe'" 

 Co" 

 Co" 

 Co" 

 Mn" 

 Mn" 

 Mn" 

 Mn" 

 Mn" 

 Mn" 



Mn" 

 Cr'" 

 Cr'" 

 Cr'" 



Cr'" 



Cr'" 



Crvi 



Cu' 



Cu' 



V'"+Cr' 



V'"+Cr' 



yv 



Vv 



Vv 



Vv 



Hg" 



As" 



As"' 



Sb"' 



? 



? 



? 



? 

 ? 

 p 



Red 



Orange Yellow 



To 690 

 To 680 

 To 680 

 To 680 

 To 680 

 To 680 

 To 670 

 To 670 

 To 670 

 To 660 

 To 670 



To 680 

 To 700 680 

 To 700 680 



JTo 700 680 



To 670 



To 660 



To 670 

 To 700 

 To 680 



IT0680 



To 680 



To 680 

 To 670 

 To 670 

 To 670 

 To 600 

 To 680 

 To 670 

 To 670 

 To 680 

 To 670 

 To 680 



To 680 

 To 670 

 To 670 

 To 680 



(57o t 



(570 t 



(600-570) 



580 t 



580 t 



600-570 

 600-570 

 600 t 



o 560 

 0580) 

 5/0 

 600-560 

 620 [585-570 

 (620) 580-565 



580 t 



620 t 

 (610 t 



630 



610 



610 



to 590 



580 1 



600-570 

 t!o 580 

 (580 1 



(580 1 



(570 1 



Green 



560 

 O 540) 



560-54O 



o 540) 



o 540 

 o 540 



560-530 

 (560 1 



o 510 



Blue 



(5OO-490) 

 5IO 



O 490) 



Violet 



on 



530-520 

 (540-520) 



5IO-495 



470 



o 550 490 



550 on 

 560 I on 



o 540 

 o 540) 



o 540) 

 o 530) 



470 

 480 



490 



440 on 



430 on 

 430 on 

 430 on 



460 on 

 460 on 

 450 on 

 450 on 

 430 on 



460 on 

 460 on 

 450 on 

 460 on 



460 on 



460 on 



450 on 

 460 on 



450 on 



450 on 



460 on 



460 on 

 460 on 



440 on 

 440 on 



460 on 



440 on 

 450 on 



The diagnostic importance of the spectra of the red corundums (shown in reflected light 

 only) was pointed out by Keeley (op. cit., p. 109). 



