14 



SCHALLER 



given and the form would seem to be new, though it cannot be defi- 

 nitely determined. 



6. CALCITE FROM TEXAS 



A crystal of scalenohedral habit, from the Mariposa and Marfa 

 Mine, Terlingua, Texas, associated with montroydite and terlinguaite 

 showed the following forms, r| 1011 } , £ {0111}, -yf 2131 } , /j 2134 ] , 

 g{1232} and the new form 1)111.5.16.21}. The following table 

 shows the measurements: 



Fig. 8 



