128 



and о are nearly equally developed , which is never the case 

 with type I. On crystals of type I the form о is always very 

 subordinate and is often totally absent.. On crystals of type II 

 this form has not been observed. The faces belonging to the 

 forms d and p are here (on type III) always very indistinct, 

 generally successively passing into one another by an undeter- 

 minable rounding. The form x is new for neptunite. Its 

 faces are always very small, yet quite determinable both by 

 measurement and by zones, ж == (31l) is located in the zones 

 [no, ill] and [lOO, 111]. 



Another combination is represented by Fig. 9, Plate VI. It 

 is identical with the foregoing excepting the forms è, p and ж, 

 which are absent, while two new forms are present, viz. 

 r = {221} and f = {Г01}. 



The form /■ belongs to the zones [OOI, lOO] and \\\-\, 111]. 

 Its faces are always very narrow. The form r belongs to the 

 zones [001, 111] and [lOO, 22l]; it has, besides, been deter- 

 mined by angular measurements. The faces of this form are 

 often of the same size as those belonging to the form 0. 



Fig. 10, Plate VII represents a combination of the following 

 forms: 



a = {100}, è = {010}, Ш = {no}, с = {001}, 



s = {lll}, ^ = {221}, o = {ril}, г=={Т12}, 

 e = {201}, /' = {Г01}, и = {512}. 



Here the form i is new. It is determined by its position 

 in the zones [oOl, 111] and [lOO, M2]. The faces are often 

 tolerably broad and always brilhant. 



At the same place where the specimens with the crystals 

 just described were met with, 1 also found a small specimen 

 with neptunite crystals showing the simple combination of faces 

 represented by Fig. 11, Plate VI. These crystals might as well 

 be referred to type I. They are bounded only by the forms 

 m = {ll0}, 6- = {001}, c^ = {ЗО1}. 



