AKT. 11. NOTES ON STEPHANITE FROM MEXICO SHANNON. 5 



290 (co^). Like the preceding, seen only as a single relatively 

 narrow face yielding a moderately good signal on crystal 2 and 

 shown in Figure 2. Angles: 



Measured ■ <^=2^ ''' "=^0 00 



Calculated «^=19 27 .=90 00 



Difference «^= ^5 ,= 00 



Via. 3.-STEPHAN1TE CBTSTAL 3 WITH F0RM3 (118), (3-10-5) AND (3-11-3) SHOWING ACTUAL 



Development. 



225 (t). Observed as a single relatively prominent face yielding 

 ail excellent signal on crystal 2, as shown in Figure 2. Angles : 



Measured ^=^8 22 p=27 05 



Calculated «A=57 49 p=27 13 



Difl-erence «^= » ^-^ P= ^ 08^ 



118 (i). Observed as a single small face yielding a comparatively 



poor signal on crystal 3, as shown in Figure 3. Angles: 



Measured 



Calculated 



Difference 



559(5 — 24 — I'roe.N.lNI.vol.Gr. 9 



0=57 55 p= 8 55 

 0=57 49 p= 9 08 

 0= 06 p= 13 



