354 Palache and Wood — CrystallograpKio Study of Miller ite. 



pstal. 



Signal. 



, 





-Eeadings.- 





N 







< 



P 





0! 





P 



19 



faii- 



11° 



13' 



11° 



13' 



44° 



59' 



19 



very poor 



49° 



03' 



10° 



57' 



44° 



59' 



19 



good 



130° 



55' 



10° 



55' 



45° 



01' 



19 



good 



169° 



06' 



10° 



54' 



45° 



01' 



19 



very poor 



109° 



10' 



10° 



50' 



45° 



01' 



22 



faii- 



49° 



24' 



10° 



36' 



44° 



55' 



2"2 



fair 



131° 



16' 



11° 



16' 



45° 



00' 



22 



poor 



169° 



29' 



10° 



31' 



45° 



00' 





Mean of 8 







10° 



54' 



44° 



59'-5 





Calculated 







10° 



53'- 



45° 



oo'- 



The_form is seen to be well established by these results. 



u, (4153). This scalenohedron occurs on ten crystals, in 

 two cases all its faces being present. The faces, however, are 

 not very bright. They are rough and pitted for the most part 

 and the images are only fair. The data follow. 



This scalenobedron and the uncertain ones, n, o, q and w, lie 

 in the zone with the rhombohedrons r and p, and their faces 

 generally appear as striations or roundings of the edges 

 between r and p, or as shown in figure 4, without p. 



Crystal. Signal. , Eeadings. , 



2 



extremely poor 





 20° 02' 



fa 

 20° 02' 



P 

 30° 07' 



2 



faii- 



40° 23' 



19° 37' 



30° 33' 



2 



good 



139° 21' 



19° 21' 



30° 03' 



2 



good 



160° 57' 



19° 03' 



30° 01' 



2 



extremely poor 



101° 08' 



18° 52' 



30° 01' 



2 



very poor 



78° 14' 



18° 14' 



30° 01' 



4 



very poor 



40° 33' 



19° 27' 



30° 11' 



4 



extremely poor 



139° 42' 



19° 42' 



30° 11' 



4 



extremely poor 



160° 26' 



19° 34' 



30° 11' 



4 



extremely poor 



100° 00' 



20° 00' 



30° 11' 



4 



extremely poor 



80° 05' 



20° 05' 



30° 11' 



4 



extremely poor 



20° 37' 



20° 37' 



30° 11' 



5 



very poor 



141° 36' 



21° 36' 



30° 40' 



7 



extremely poor 



138° 41' 



18° 41' 



30° 40' 



7 



extremely poor 



161° 25' 



18° 35' 



30° 40' 



7 



extremely poor 



79° 32' 



19° 32' 



30° 40' 



9 



poor 



99° 52' 



20° 08' 



30° 42' 



19 



very poor 



159° 51' 



20° 09' 



30° 45' 



26 



poor 



41° 20' 



18° 40' 



30° 00' 



26 



very poor 



18° 51' 



18° 51' 



29° 49' 



27 



poor 



41° 07' 



18° 53' 



29° 42' 



27 



poor 



100° 12' 



19° 48' 



29° 42' 



27 



very poor 



161° 48' 



18° 12' 



29° 42' 



27 



very poor 



138° 38' 



18° 38' 



29° 42' 





Mean of all (24) 





19° 24'- 



30° 04' 





Mean of best 





19° 05' 



30° 07' 





Calculated 





19° 06' 



30° 00'' 



