...render them nearly opaque except in thin fragments. Milky Quartz, as the name implies, has a rnilk-white color. It is a massive vitreous variety, and one of...Quartz is minutely spangled throughout the mass with scales of yellow mica. It is usually translucent and of a gray, brown, or reddish-brown color. Ferruginous...

...lustre, and is then called greasy quartz. frase is a leek-green variety of massive quartz. Aventarine quartz is minutely spangled throughout the mass with...It is usually translucent, and of a gray, brown, or reddish brown color. Siderite. An indigo or Berlin-blue variety, from Golling, near Saltzbnrg. Ferruginous...

...then called ffreaey quartz. — 17. Prate is a leekgreen variety of massive quartz. — 8. Avcnturin quartz is minutely spangled throughout the mass with...yellow scales. It is usually translucent, and of a grey, brown, or reddish-brown colour. — i. Sidmte : a blue variety from Golling, near Saltzburg....

...then called greasy quarts. — 1\. Prase is я leekgreen variety of massive quartz. — в. Aventurin quartz is minutely spangled throughout the mass with...yellow scales. It is usually translucent, and of a grey, brown, or reddish-brown colour.— i. Siderile : a blue variety from (rolling, near Saltzburg....

...impurities or opacity so arranged that when cut cabochon across the prism it exhibits asterism. A.ventvrine quartz is minutely spangled throughout the mass with yellow scales. It is transparent to opaque, and of a gray, brown, reddish-brown, or yellow color. Jjaxanitc, lydian stone,...

...impurities or opacity so arranged that when cut cabochon across the prism it exhibits asterism. Aoenturine quartz is minutely spangled throughout the mass with yellow scales.. It is transparent to opaque, and of a gray, brown, reddish-brown, or yellow color. Baaanite, lydianstone,...