Rogers — Miner alogical Notes. 47 



tals from Cerro Gordo mines, Inyo Co., Cal., present _ the 

 fol]owing forms: c (001), a (100), m (100), b (010), u (201), 

 s (101). The crystals are very thin, being flattened parallel to 

 the hemi-orthodome s (101) and are elongated in the direction 

 of the 6-axis. Good measurements were not obtained on 

 account of narrow faces and multiple images, but they are 

 sufficient to identify the forms as given above. 



This mineral also occurs at the Alice mine, near Butte City, 

 Mont., and at the Daly mine, Park City, Utah. 



7. Caledonite Crystals from Montana. 



Caledonite has been reported from the same three local- 

 ities as linarite. Its occurrence at Mine la Motte, Mo., 

 needs confirmation. The crystals examined are from the 

 Alice mine, near Butte City, Montana. They resemble in 

 habit those described by Farrington* from New Mexico. The 

 forms are c (001), b (010), m (110), ^(011), / (021), 5(223), 

 t (221, besides several undetermined vicinal forms between f 

 and c and between t and m. 



8. Highly modified Barite Crystals from Kansas City, Mo. 



In cavities in limestone at Kansas City, Mo., are often found 

 small crystals of barite. They are usually simple combinations 

 of the common forms, but occasionally highly modified ones 

 are found. One such measuring about l-| mm (fig. 7) was studied 

 with the following results. The crystals are tabular in habit, 

 being flattened parallel to the basal pinacoid. The forms are 

 as follows: c (001), b (010), a (100), m (110), L (110), rj (320), 

 I (104), d (102), o (011), f (113), r (112), z (111), y (122). JS T ot 

 all the faces gave good images, but the forms are identified 

 without doubt. 















Average. 



Calculated 



a 



/n d 



100 



s\ 



102 



3 



51° 6' 



51° S^ 



I 



/\ c 



101 



/\ 



001 



5 



21° 54' 



21° 57' 



c 



/\ d 



001 



^\ 



102 



3 



38° 51' 



38° 5-U 







/N 



001 



A 



011 



3 



52° 38' 



52° 43 r 



III 



/\ 3 



110 



/\ 



111 



3 



25° 39' 



25° 41' 



V 



/s c 



112 



As 



001 



3 



46° 10' 



46° 6' 



f 



A C 



113 



A 



001 



3 



34° 45' 



34° 43' 



c 



* y 



001 



y\ 



122 



5 



56° 51' 



c i- I ' 



5/ 1 



a 



y\ m 



00 L 



a 



110 



3 



39° 11' 



39° 11' 



n 



/\ m 



320 



/\ 



110 



8 



10° 29' 



10° 39' 



b 



^L 



010 



/\ 



140 



6 



22° 40' 



22° 14J 1 











* Farrington, 



loc. cit. 





