468 LIST OF MINERALS, THEIR 



Allochroite. 



But it is probable that most, if not all of these dis - 

 tinctions, may be referred to accidental mixtures, which 

 chemistry cannot at present distinguish from the essen- 

 tial constituents of the pure garnet. 

 Geantrace, see Coal. 



GEHLENITE ; Stylobat. A square or rectangular prism. No 

 secondary forms to determine which of these is the 

 primary. 



Geyserite, see Quartz. 

 Gibbsite, see Alumine hydrate. 

 GIESECKITE. 



crystallised. A regular hexagonal prism. The Trikla- 

 site agrees very nearly with this species in its 

 chemical composition, and possesses the same 

 crystalline form, with nearly the same external 

 characters. 



Girasol, see Quartz, opal. 

 Gismondin, see Zeagonite. 

 Glance copper, see Copper sulphuret. 

 Glauberite ; see Soda, sulphate of Soda, and Lime. 

 Glaucolite, a mineral so named by Fisher of Moscow, which 

 resembles in colour and general appearance the blue 

 Fettstein from Laurwig in Norway. The Norway 

 mineral has cleavages parallel to the planes of a rhombic 

 dodecahedron. 



The only specimen I have seen of Glaucolite is in 

 the possession of Mr. Heuland. 

 GOLD, native. 



crystallised. A regular octahedron. 



fibrous . 



granular. 



amorphous. 



argentiferous ; Electrum. 



crystallised, 

 amorphous. 



Gothite, see Iron, oxide, hydrous. 

 Giammatite, see Amphibole. 

 Grammite, see Lime, silicate. 

 Graphic ore, see Tellurium. 



GRAPHITE; Plumbagine ; Plumbago; occurs in thin hexa- 

 gonal plates, or crystals, which are sometimes striated 

 parallel to their edges. 

 Grenatite, see Staurotide. 

 GREEN-EARTH ; Baldogee. 

 Greenlandite, see Garnet. 



