MINERALS. Ill 



DIVISION 4. 



4tli Sr.Ti.es, - Dioxides. 



(reode showing Onyx. ? Switzerland. 

 Chalcedony Geode. ,, 



Chalcedony artificially stained blue to imitate Lapis-Lazuli ! 

 ,, filancn di Cattelli, Italy. 

 ,, Campo, Elba. 



(ironp of Smoky Quartz Albula, Switzerland. 

 Cariated vitreous Quartz Campo.Elba. 

 Ferruginous Quartz. G<drn>jo>-m, Scotland. 

 Manganese. Pt/rtoferralo, E'ba. 



,, Ore. 2'iiffela River, Zululaud. 



earthy. Capo dell'i. Vita, Elbt, 



Mang n'te. *\ 



Amethyst Quartz Crystal <. South Devon. 

 Pear. Winter. ? Sici y. 

 Prase. Oi'taiio, Elb i. 

 J>lu'! Cliry.sopia-e G\la Co., Arizona. 

 Clirysob'ryl, -'Cat's Eyu" . Oft/ion, 

 Jaspor. Galston, S<'0*l>tn.d, 

 ,, Ztii Inland. 



,, Itsola di San Pi s,tro, Sardinia. 

 Common Opal. St. Ilario, Elba, 



Premier Diamond Mine, Transvaal. 



Precious Opal. Queensland, Australia, 

 Heliotrope - Blood Stone. Rum, Scotland. 



,, polished. ,, ,, 



Carnelian, Galston, Scotland. 

 Pearlite. A rran, Scotland. 



