234 



Penfield and Ford — Calaverite. 



b 

 m 



2 



P 



9i 

 w 

 u 



j 



s 

 cr 



D 



c 



■5, 

 R. 







Measured. 





Symbols. 



Vertical. 



Horizontal. 



010 



00° 



00' 



00 c 



00' 



110 



00 



00 



31 



28 



17-40-2 

 33-80-4 



9 



58 



14 



22 



11-29-5 



32 



25 



15 



33 



111 



54 



33 



46 



57 



10-15-22 



72 



6 



52 



49 



111 



125 



16 



46 



47 



11-18-10 



127 



40 



31 



6 



756 



128 



50 



53 



30 



II-62-6 

 2-10-1 



J- 144 



13 



7 



55 



17-0-2 

 801 



I » 



51 



90 



00 



304 



62 



8 



i 



: 



001 



89 



51 



i 



: 



11-0-1 



172 



52 



' 



i 



15-0-1 



175 



1 



c 





Calculated. 



Vertical. 



Horizontal. 



00° 00 



00° 00 



00 00 



31 30-J 



9 30 



14 48^ 



9 47^ 



14 24 



32 52 



15 30| 



54 48 



46 54|- 



71 36 



52 38 J 



124 55 



46 48J 



127 32 



31 28 



129 1I-J 



53 31 



142 4 



7 50 



144 28 



8 33 



9 30 



90 00 



10 5i 



it 



62 4 



a 



89 47| 



a 



172 34 



a 



174 35 



a 



Times 

 observed. 



2 

 4 



On these two crystals, as indicated by the figures, attention 

 may be called to the occurrence of the clino-pinacoid h (010). 

 or polar face, and to the prominent developments of m, w and 

 q. The forms g x and j have been observed by us on only the 

 one crystal represented by figure 18. There is some uncer- 

 tainty concerning a (2 , 10 , 11), figure 19. It is a small face, 

 apparently in the zone m, q, but it is very near to s (H'62'6) 

 of occurrence No. 1, which is in the zone J), p, o and q. The 

 dome B is probably (801), which is in the same zone as m and 

 q. In cross-section these crystals have a far more regular con- 

 tour than those of the occurrences previously cited. 



Occurrence No, 1^. — The occurrence thus designated is that 

 of a suite of specimens sent by Mr. Bixby with no special 

 designation of the mine from which they came. The speci- 

 mens resemble very closely those from the Moon Anchor mine. 

 The crystals are lath-shaped, some of them very thin, attached 

 to what appears to be an andesitic gangue. They have been 

 deposited in crevices, and are associated with quartz and fluor- 

 ite. Many of the crystals are much bent and cracked. 

 Although there was an abundance of calaverite on the speci- 

 mens only one crystal was found which seemed to offer any 

 possibility of measurement. The end of the crystal when 

 detached from the gauge measured about l mm in length and 

 only 0'6 by 0'15 mm in cross section. Although so very minute, 

 the reflections from its faces were excellent : in fact this 



