3. W. Frazier — Axinite f re 



ethlehem, Penn. 



axinite in which are carried out the angles for those simj: 

 forms of axinite which correspond to simple forms of datolii 

 and the averages of the angles made with an axial plane 1 

 the two simple forms of axinite corresponding to but o: 

 simple form of datolite. 



Table III. 



! BatoKte. 





- 



;„«, 







H 



ooi 



a:b 

 b':c 



s° 



5,' 



J;i 



89° 



';;' 



IF 



5 



• 100 



! I.! f 



120 { 



«:M 



32 



28 





,uZ 



l\ 



52 







1 20 \ 













2S n' 







120 



















Hi 



si 



:S 



a 



tl 



jm':/ 



44 



11 



a 



2 













1 w 











001 



|f 



c:m 



51 



41 



i ;« • y 



47 





52 



05 





is 



m : to 



66 



56 



\Z'\ 



2 



;■;;. 



"n; 



28 



001 







67 



03 



1 m : w 



,: * 



":) 







mo" 



il 



.:<• 



39 



01 



\ p: d 



45 



<:> 



39 



12 



100 



411 f 



a:v 



39 



04 



ip'.a 



mtl , M 



s 







001 



l\\\ 



c:Q 



58 



06 



\Z-l 



50 



si 



57 



45 





24M 



a:Q 







$p: x 





25/ 









241 [ 











_26J_ 







A comparison of the angles in this second column u 

 axinite with those in the column under datolite will sh< 

 close agreement in the angles between similar planes, ex 

 only in two of the angles between the axial planes. Ax 

 thus appears like a distorted datolite, and though the distot 

 is considerable, it is by no means sufficient to obliterate tin 

 semblance between them. A peculiarity common to both i 

 erals is worthy of notice. The zones a, r, c, c of datolite, 

 p, r, m, e of axinite have each four planes, the poles of w 

 are separated bv arcs of nearly 4.V. :iud the other plan* 



i -tab 





it tii 



group< 

 an approach to tetragonal 

 ired by this degree of syi 



the respectb 



tbfpfa' 



present, but those which do occur have approximately the 



positions which such a law of symmetry would assign to them. 



