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PROCEEDINGS OF THE NATIONAL MUSEUM. 



blades of barite. Upon this surface are scattered crystals of anglesite 

 which reach an extreme diameter of 1 centimeter. Two prominent 

 habits are represented — one tabular to pyramidal with ^:>(324) pre- 

 dominating, the second short prismatic parallel to the a axis. These 

 two types occur at opposite ends of the specimen and are not inter- 

 mixed. A typical crystal of the pyram- 

 idal type is shown in figure 5, the 

 forms present being /?(324), c(OOl), 

 6(010), o{011), m(llO), n(120), and 

 x(130). A more tabular individual 

 shown in figure 6 has the additional 



Fig. 6.— Ckystal of auglesite. 



Fig. 7.— Crystal of anglesite. 



forms 2/(122), s( 111), and r(112). The short prismatic type found 

 on these specimens is illustrated in figure 7, the forms being a (100), 

 &(010), c(OOl), 1(104:), d{102), o{011), N{S10), m(llO), n(120), 

 x(130), 2/(122), and s(lll). 



A complete list of forms thus far reported from this locality is 

 given in the table below : 



Forms on Utah anglesite. 



New from this locality. 



