MINERALS. 303 
TRIPLITE. 
From a tin mine near Rapid City, South Dakota. Probably identical with Head- 
den’s “‘griphite.”” Analysis by L. G. Eakins, with description in Bull. 60. 
33) 81 ite Rt RN | 1 © | Seen ee Reve Pee phone te ieee trace 
43 3.67 
8.74 - 26 
2.36 2.35 
1.97 25 
29.13 
6.72 100. 94 
trace: |. Excess: Oc cccnc snincssees eonteumeseear lags 1.05 
.13 
5.25 99. 89 
AMBLYGONITE. 
From Pala, San Diego County, California. Analysis by W. T. Schaller. 
5.95 
2,29 
101.31 
+96 
100. 45 
DUFRENITE (?). 
Two samples ofa fibrous phosphate from Grafton, New Hampshire. Near dufrenite, 
but uncertain. Analyses by W. T. Schaller. 
PURPURITE. 
Described as a new species by Graton and Schaller. Analyses by W. T. Schaller. 
A. From Faries mine, Kings Mountain, North Carolina. 
B. From Hill City, South Dakota. 
A. B 
47.30 43. 45 
29. 25 12. 08 
15. 89 38. 36 
1.48 1.37 
aiekecincas trace 
present trace 
84 trace 
5. 26 4. 82 
- 62 19 
100. 54 | 100.27 
