APHRODITE. 



Norway ; in decomposed Felspar at Andreas- 

 berg in the Harz ; and at St. Just in Corn- 

 wall. {Fig. 25.) 



Fig. '25. 



Aphrodite. A soft and earthy mineral 

 like Meerschaum, of a white or yellowish 

 colour, and with a waxy lustre. Translucent. 

 S.G. 2-21. 



Comp. Mg3 tii2 + 3 H. 

 Analysis by Berlin : 



Silica .... 



Magnesia 



Protoxide of manganese 



Protoxide of iron . 



Alumina 



APOPHYLLITE. 



23 



51-55 

 33-72 



1-62 

 0-59 

 0-20 



Water 12-32 



100-00 

 Locality. Longbanshytta, in Sweden. 

 Aphrosiderite, Sandberger. A ferrugin- 

 ous Ripidolite, occurring in fine scaly grains 

 in the Duchy of Nassau and Weilburg, com- 

 ■ of 



Silica . 



. 26-45 



Alumina 



. 21-25 



Protoxide of iron . 



. 44-24 



Magnesia 



. 106 



Water . 



. 7-74 



- 100-74 



Comp. 3 R3 si + 3A1 si + 6 H (Genth.) 

 See OwENiTE and Thuringite. 



ApHTHALOSE, Beudant. From ^<pf)iro^, un- 

 alterable, and cixoi, salt. See Glaserite. 



Aphthitalite, Shepard. See Glaserite. 



Aphthonite, Svanberg. A mineral resem- 

 bling an argentiferous Tetrahedrite (Grey 

 Copper). It occurs massive, of a steel-grey 

 colour and with a black streak, at Werni- 

 land. H. 3. S.G. 4-87. 



nalysis by Svanberg : 





Sulphur 



. 30-05 



Antimony . 



. 24-77 



Copper . 



. 32-91 



Zinc . 



. 6-40 



Silver . 



. 3-09 



Iron 



. 1-31 



Lead . . 



. 0-04 



Cobalt . 



. 0-49 



Arsenic . 



. trace 



Gangue 



1-29 



10037 

 Apjohnite, Glocker. A manganesian 

 alum occurring in acicular crystallizations 

 with a silky lustre, like Asbestos, near Lagoa 

 Bay, in S. Africa. 



Comp. Mn S +^1 S3 + 24 H, or sulphate 

 of manganese 16-3, sulphate of alumina 37-0, 

 water 46-7 = 100. 



The name Apjohnite has also been given 

 to a metallic ore of a brownish -leaden colour, 

 found in Ireland, mixed with Iron Pyrites. 

 The composition, according to Heddle, is re- 

 presented by the formula 5 Fe S^ + 2 Pb S + 

 12 Zn S, or "bisulphide of iron 26*75, sulphide 

 of lead 21 32, sulphide of zinc 51-93 = 100. 



Aplome, Haiiy, Phillips. A variety of 

 iron-lime Garnet, commonly occurring in 

 rhombic dodecahedrons, having their planes 

 striated parallel to the shorter diagon- 

 al. Colour deep-brown, or orange-brown. 

 Opaque. Harder than quartz. S.G. 3-44. 



Fig. 26. 



Localities. The banks of the river Lena, 

 in Siberia ; the Banat ; and Schwarzenberg, 

 in Saxony. 



Naine. From a'zxoo?, simple ; from the sup- 

 posed derivation of the dodecahedron from 

 a cube, by one of the most simple laws of 

 decrement, viz., by replacement parallel to 

 all its edges. 



Apophylltte, Dayia, Haiiy, Phillips, Ni- 

 col. Pyramidal. Occurring in square prisms, 

 whose solid angles are sometimes replaced 

 by triangular planes, which, by a deeper 

 replacement, assume the form of rhombic 

 planes. Cleavage highly perfect, parallel to 

 all the planes of the primary form, but most 



Fig. 27. 



Fig. 28. 



^ 



readily perpendicular to its axis. Structure 

 lamellar. Colour white or greyish, some- 

 times with a green, yellow, or reddish tinge. 

 c4 



