656 MINERALOGY 



Martinite, H 2 Ca 5 (PO)4.H 2 O ; White, yellow; G. 3.9; 



F. Difficult ; III. 

 3. Yields much water. 



Isoclasite, Ca(Ca.OH)P0 4 .2 H 2 O ; White ; Cl. pina- 



coidal; H. 1.5; G. 2.92; F. 4? ; V. 

 Brushite, HCaPO 4 .2 H 2 ; Colorless, pale yellow; Cl. 



pinacoidal ; H. 2-2.5 ; G. 2.20 ; F. 3 ; V. 

 Goyazite, Ca3Al 10 P 2 O23.9 H 2 ; Yellowish white ; Cl. 



basal ; H. 5 ; G. 3.26 ; F. Difficult. 



D. Becomes blue with cobalt solution (aluminum). Fusibility above 5. 



Variscite, A1PO 4 .2H 2 O; White, apple- to emerald- 

 green ; Cl. prismatic ; H. 4 ; F. Difficult ; G. 2.4 ; IV. 

 Callainite, A1P0 4 .2| H 2 O ; Apple- to emerald-green ; 



H. 3.5-4 ; G. 2.51 ; Massive. 

 Zepharovichite, A1PO 4 .3 H 2 O ; Greenish to grayish 



green; H. 5.5; G. 2.37; Compact. 

 Minervite, AIPO 4 .3| H 2 ; White ; Massive. 

 GIBBSITE, A1PO 4 .4 H 2 O ; White; Massive; Foliated; 



p. 365. 

 WAVELLITE, (A1.OH) 3 (PO 4 ) 2 .5H 2 O ; White, yellow, 



green, brown ; H. 3-4 ; G. 2.33 ; IV ; p. 510. 

 Augelite, A1 2 (OH) 3 PO 4 ; White; Cl. prismatic; H. 



4.5-5; G. 2.70; V. 

 Peganite, A1 2 (OH) 3 P0 4 .H H 2 ; Dark to light green; 



H. 3-3.5; G. 2.50; IV. 

 Fischerite, A1 2 (OH) 3 PO 4 .2^ H 2 ; Grass- to olive-green ; 



H. 5; G. 2.46; IV. 

 Sphaerite, A1 5 (OH) 9 (P0 4 ) 2 .12 H 2 O; Light gray or blue; 



H. 4 ; G. 2.53 ; Globular. 

 Evansite, A1 3 (OH) 6 PO 4 .6H 2 O ; White, pale yellow or 



blue; H. 3.5-4; G. 1.94; Massive. 

 LAZULITE, (Mg.Fe)(Al.OH) 2 (PO 4 ) 2 ; Azure-blue; H. 



5.5 ; G. 3.06 ; V ; p. 438. 

 Florencite, Al 3 Ce(OH) 6 (PO 4 ) 2 ; Pale yellow; Greasy; 



Cl. basal ; G. 3.58 ; III. 



E. Not included above. 



1. Heated in the closed tube yields the odor of ammonia. 



Struvite, NH 4 MgPO 4 .6 H 2 ; White, yellow, brown; 



H. 2; G. 1.65; F. 3; IV. 

 Stercorite, H(NH 4 )NaPO 4 .4 H 2 O ; White, yellow, 



brown; H. 2; G. 1.6; F. 1 ; V. 



