Vol. 5 J 



Eakle. — Notes on Some California Minerals. 



231 



the braehydome o (Oil) and the braehypyramid y (122). The 

 other forms are all very subordinate and sometimes lacking. The 

 general habit is seen in plate 20, fig. 7. 



The forms identified on these crystals were. 



c (001) d (102) o (Oil) P (067) new 



m (110) I (104) y (122) 



Measured Calculated 







<t> 



P 



<t> 



P 



c 



001 



0°00' 



0°00' 



0°00' 



0°00' 



VI 



110 



90 00 



52 01 



90 00 



52 00 



d 



102 



90 00 



39 11 



90 00 



39 23 



I 



104 



90 00 



99 99 



90 00 



22 19 







011 



00 



52 01 



00 



52 04 



P 



067 



00 



47 31 



00 



47 35 



y 



122 



32 35 



56 43 



32 37 



56 43 



The new form P (067) occurred on both sides of the base as 

 long narrow faces and the reflections were good. 



III. — Stibnite from Hollister, San Benito County. 



California has long been known for her deposits of stibnite, 

 and many fine specimens have been obtained from the various 

 mines. Most of the prisms, however, are deeply furrowed, bent, 

 twisted, and without terminating faces; consequently good mea- 

 surements of them are seldom possible. In looking over a lot of 

 the material from the State, some specimens coming from the 

 vicinity of Hollister were seen to consist of isolated crystals with 

 good terminal faces, and a few of these were measured. The 

 habit and forms are seen in plate 20, fig. 8. 



The observed forms were : 



6 



(010) 



?! (210) 



S (113) 





m 



(110) 



h (310) 



y (102) new 



q 



(130) 



Jc (430) 



5 (4.5.12) 









Measured 



Calculated 







<P 



P 



4> 



P 



b 



010 



0°00' 



90°00' 



0°00' 



90°00 



q 



130 



18 20 



90 00 



18 34 



90 00 



m 



110 



45 11 



90 00 



45 13 



90 00 



Ti 



430 



53 15 



90 00 



53 20 



90 00 



n 



210 



64 12 



90 00 



63 36 



90 00 



h 



310 



72 00 



90 00 



71 41 



90 00 



.'/ 



102 



90 00 



27 20 



90 00 



27 09 



,s 



113 



45 22 



25 44 



45 13 



25 43 



5 



4.5.12 



39 08 



28 05 



38 52 



28 34 



