TITAN M'.M AND TUNCISTIA MINERALS I Hi!) 



Microlite, Ta, Cb, Ca, Na, C, F, H ? ; Pal. yellow to 

 brown; Id-mmi-; H.~>..~i; (',.'.'>; I. 



FERGUSONITE, (Y.l ; Brownish 



black; Resinous; H. 5.5-6; G. 5.80; II; Mas- 

 sive. 



Sipylite, (Er.( Y.L-i.I)i.H 3 )Cb() 4 , ? ; Brownish black; 

 i;. -'until-. ; H. 6; G. 4.9; II; Massive. 



Compare, Columbite p. 034. 



Wohlerite, Si, Zr, Cb, Ca, Na, O, ? ; Straw to brownish 

 yellow; Cl . pinacoidal ; H. 5.5-6; G. 3.44; F. 3-3.5; 

 V. 

 XIII. The mineral in powder is dissolved in the S. Ph. bead. 



A. The S. Ph. bead in R. F. is yellow (nickel). 



1. Effervesces in hot dilute HC1 (carbonates). 



Zaratite, (Ni.OH) 2 CO 3 .Ni(OH) 2 .4 H 2 O; Emerald-green; 

 H. 3 ; G. 2.63 ; F. Inf. ; Massive. 



2. Do not effervesce with HC1. 



GENTHITE, H 4 Ni 2 Mg 2 (SiO4) 3 .4 H 2 O ; Pale to deep- 

 green ; Dull ; H. 3-4 ; G. 2.41 ; Inf. ; Amorph. ; p. 500. 



Morenosite, NiSO 4 .7 H 2 O ; Apple-green, greenish 

 white ; Cl. pinacoidal ; H. 2 ; G. 2.00; IV. 



B. The S. Ph. bead is blue in both flames (cobalt). 

 1. Effervesces with HC1. 



Sphaerocobaltite, CoCO 3 ; Rose-red; H. 4; G. 4.07; 



Inf.; III. 

 Remingtonite, CoCO 3 , + H 2 O ; Rose-red ; Soft ; Earthy ; 



Yields water. 



C. The S. Ph. bead is green in R. F. when cold (chromium or uranium) . 



1. Shows chromium; b, p. 569. 



UVAROVITE, Ca 3 Cr 2 (SiO 4 ) 3 ; Emerald-green; H. 7.5; 

 G.3.42; Inf.; I; p. 445. 



Fuchsite, H 2 K(Al.Cr) 3 (SiO 4 ) 3 ; Emerald-green; Cl. 

 basal; H. 2.5; G. 2.86; F. 5; V; Micaceous. 



Kammererite, H 8 Mg 6 (Al.Cr) 2 Si 3 O 18 ; Garnet to peach- 

 blossom-red; Cl. micaceous ; H. 2-2.5; G. 2.75; F. 

 5;V. 



2. Shows uranium ; b, p. 576. 



Uranophane, CaU 2 Si 2 Ou.5 H 2 O ; Honey-, lemon-, or 

 straw-yellow; H. 2-3 ; G. 3.86; Inf.; VI. 



Uranophilite, CaU 8 S 2 O 3 i.25 H 2 O ; Yellow ; G. 3.75 ; Vel- 

 vety, incrusted ; Inf. 



