454 LIST OF MINERALS, THEIR 



Anthraconite, see Lime, carbonate, columnar. 

 ANTIMONY. 



native. Cleavage parallel to the planes of an obtuse 

 rhomboid-, P on P', about 117, but the measure- 

 ment of different fragments does not agree within 

 more than 2 degrees, owing to the dulness of the 

 planes, and apparently to their being more or less 

 curved. The rhombic planes are striated hori- 

 zontally, and the bright planes, which are gene- 

 rally conspicuous in the specimens of this substance, 

 are perpendicular to the axis of the rhomboid. 



arseniferous. 



oxide ; White antimony. 



crystallised. A right rhombic prism ; M on M', 

 137; the broad bright planes of the crystals 

 being parallel to the short diagonal of the 

 prism. 



fibrous, radiating, 

 earthy. 

 ....... sulphuretted ; Red antimony. 



crystallised ; probably a right square prism ; Mr. 

 Phillips having found one of the thin fibrous 

 crystals measure on the lateral planes 90, and 

 135. 

 fibrous. 



earthy ; Tinder ore. (Leonhard.) 

 sulphuret ; Grey antimony. 



crystallised. A right rhombic prism , M on M', very 

 neaily 90. Its secondary planes shew that 

 the prism belongs to the rhombic class and is 

 not square, 

 fibrous, 

 compact. 



Apatite, see Lime, phosphate. 

 Aphrite, see Lime carbonate, nacreous. 

 Aphrizite, see Tourmaline. 

 APLOMB. A cube. 



APOPHYLLITE; Albin ; Fish-eye-stone; Icthyopthalmite. 

 A right square prism ; M on a plane belonging to mod. 

 class 0, 128 10'. 



Aquamarine, see Emerald, var. Beryll. 

 Arendalite, see Epidote. 



ARFWEDSONITE; Ferriferous hornblende; see Annals of 

 Philosophy for May 1823. Cleavage parallel to the 

 lateral planes and to both the diagonals of a rhombic 

 prism of 123 55'. 



