MM NIC M1M.KALS 



3. Grlat 'mixes with HC1. 



Eulytite. Bi^SiOOs; Brown, yellow, colorlesw ; li 



ous; H. 4.5; G. 6.1 ; F. 2; I. 

 Agricolite. Hi,(Si( ) ; ) :1 ; Yellow, l.rown ; II. 3?; G. 6.00; 



! . 2 ; V. 



4. Soluble in IK'l, shows vanadium; p. 576. 



Pucherite, BiVO 4 ; Reddish yellow ; Cl. basal ; H. 1: 

 G. 6.25 ; F. 2 ; IV. 



5. Shows tellurium. 



Montanite, (Bi.2 OH) 2 Te0 4 ; Yellow, green, white; H. 

 1.5? ; Dull ; Massive. 



C. Yields an antimony coal; a, p. 584. 



1. The HC1 solution reduced with tin shows titanium; 6, 



p. 570. 



Lewisite, (Ca.Fe^TijSbeO^ ; Honey-yellow to brown; 

 Resinous; H. 5.5; G. 4.95; I. 



2. In R. F. becomes magnetic. 



Tripuhyite, Fe 2 Sb 2 07,' Greenish yellow ; Resinous; G. 

 5.82; F. 4-5?. 



3. In R. F. not magnetic. 



Romeite, CaSb 2 4 ; Honey-yellow; H. 5.5; G. 4.70; 



II. 

 Manganostibnite, Mni Sb 2 O 5 ; Black; Compact. 



D. Yields a cadmium coat; a, p. 581. 



With soda a sulphur reaction. 



Greenockite, CdS ; Honey-, lemon- or orange- yellow ; 



H. 3-3.5; G. 4.95; III; p. 306. 



V. In R. F. on coal yields an arsenical odor, or the powdered 

 mineral heated with a few fragments of coal in a 

 closed tube yields an arsenic mirror. 



A . In the borax bead it shows cobalt. 



ERYTHRITE, Co 3 (AsO 4 ) 2 .8 H 2 O ; Crimson to peach- 

 red; Pearly; H. 1.5-2.5; G. 2.95; F. 2.5; V; p. 

 517. 



Forbesite, H(Ni.Co)As0 4 .3 H 2 ; Grayish white; 

 Silky; H. 2.5; G. 3.1 ; Fibrous. 



B. With borax shows nickel. 



Annabergite, Ni 3 (AsO 4 ) 2 .8 H 2 O ; Apple-green ; H. 



1.5-2.5; F. 4; V; Capillary. 

 Cabrerite, (Ni.Mg) 3 (AsO 4 ) 2 .8H 2 O ; Apple-green ; Pearly ; 



H. 2 ; G. 2.96 ; F. 4-5 ; V. 



