C. Palache — Mineralogical Notes. 



251 



Table of Forms and Angles Observed on 7 Measured Crystals. 

 Calculated Measured Average Limits (in minutes) 



(j> p No. of 



Sym- , * ■> , * , of crys- 



bol <(> p ® p + — + — faces tals Quality 



b 010 00° 00' 90° 00' 00° 00' 90° 00' 10' ..' ._' _.' 8 7 good 



a 100 90 00 90 00 S9 56 90 00 12 .... 7 5 good 



k 310 78 20 90 00 78 24 90 00 30 15 .. .. 10 6 fair 



q 210 72 47 90 00 72 30 90 00 .. 44 .... 8 5 fair 



n 530 69 36 90 00 69 54 90 00 29 .. .. ._ 2 2 poor 



s 320 67 33 90 00 67 45 90 00 16 5 4 poor 



m 110 58 13 90 00 58 16 90 00 26 16 __ ..16 7 good 



V 120 38 54 90 00 39 16 90 00 68 47 .. ..4 3 poor 



t 130 28 17 90 00 28 15 90 00 5 9 .... 5 4 good 



I 140 21 58 90 00 22 02 90 00 25 9 .... 9 5 good 



u 021 00 00 34 26 00 00 34 32 .. .. 22 12 4 3 fair 



x 041 00 00 53 54 00 00 53 50 ...._... 1 1 poor 



d 101 90 00 28 57 90 02 28 27 28 13 11 22 5 4 poor 



o 111 58 13 33 04 58 08 33 08 27 44 31 4 14 5 good 



v 121 38 54 41 23 38 48 41 34 11 21 37 5 11 6 good 



p ' 131 28 17 49 26 28 16 49 35 15 19 22 12 10 6 good 



New forms well established. 



g 510 82 57 90 00 S3 08 90 00 25 2 .... 2 1 poor 



h 410 81 12 90 00 81 04 90 00 27 28 ... .. 5 2 poor 



i 950 71 00 90 00 70 55 90 00 .. 9 .... 2 1 fair 



j 540 63 38 90 00 63 27 90 00 14 33 .. _. 3 1 poor 



y 221 58 13 52 28 58 12 52 28 19 12 2 14 4 good 



A 212 72 47 30 05 71 14 30 26 .. 105 26 .. 2 2 fair 



B 141 21 58 55 56 21 38 56 18 .. ...... 1 1 fail- 

 Uncertain and vicinal forms. 



720 79 58 90 00 79 47 90 00 13 28 _. .. 4 4 poor 



11.4.0 77 18 90 00 77 20 90 00 21 17 .. ..2 2 poor 



940 74 24 90 00 74 34 90 00 29 3 2 poor 



470 42 41 90 00 42 41 90 00 16 17 .... 2 2 poor 



151 17 53 60 58 16 37 62 15 .. .. .... 1 1 poor 



481 38 54 73 37 37 03 72 46 .. 194 .. 77 2 2 fair 



5.10.1 38 54 77 13 37 27 76 30 .. 249 106 .. 2 3 poor 

 10.20.1 38 54 83 31 40 34 82 56 220 .. .. 61 5 5 poor 

 16.24.1 47 55 85 12 47 30 84 41 .. 52 27 129 3 4 fair 

 18.45.1 33 47 86 54 33 18 86 29 81 142 66 97 7 7 poor 



The terminations are chiefly characterized by the strong 

 development of the parallel zone of pyramids, o, v, and p and 

 the dome d in the same zone. Three narrow line faces of 

 pyramids in this zone new to the mineral were observed, of 

 which two, A (21 2) and B(141), seem to be established by the 

 observations. The latter is one of the forms mentioned by 



