Prof. Naumann on Mineralogical Classification. 43 



CLASS VI. GEOLITES.— So called, because most of the minerals of 

 a truly stony nature, and composed of earthy elements, belong to this 

 division. Silicates and aluminates, whose predominating bases are 

 earths and alkalies ; also silica, alumina, and the other earths.* 



Okder I. Hydrous Geolites. 

 A. Crystalline Substances. 



Gibbsite 



Diaspore 



Hydrargillite 



Brucite 



Nemalite 



Pyrosclerite 



Picrosmine 



Pyrallolite (?) 



Pyrophyllite 



Pholerite 



Neurolite 



Xanthophyllite 



Seybertite 



Rosellane 



Wbrthite 



Okenite 



Laumonite 



Leonhardite 



Stilbite 



Desmine 



Epidesmine (Epistilbite) 



Aedelforsite 



Brewsterite 

 Thomsonite 

 Pectolite 



Skolezite (Lime-mesotype) 

 Natrolite (Soda-mesotype) 

 Mesolite 

 Lehuntite 

 Harmotome 

 (a) Lime-Harmotome 

 (6) Baryte-Harmotome 

 Zeagonite 

 Apophyllite 

 Chabasite 

 Gmelinite 

 Phacolite 

 Glottalite 



Analcime (and cuboite) 

 Ittnerite 

 Edingtonite 

 Stellite 

 Datolite 

 Prehnite 



B. Amorphous Siibstances. 

 (Many minerals of this subdivision are mere products of decomposition.) 



Chonikrite 



Kerolite 



Soapstone 



Retinalite 



Meerschaum 



Aphrodite 



Speckstcin 



Agalmatolite 



Onkosine (.'' ) 



Steinniark 



Tuesite 



Miloschine 



Bole from Stolpen 



Melopsite 



Malthacite 



Kollyrite 



Razoumoffskine 



Cimolite (including Tilpferthon) 



Pipestone 



Kaolin 



Halloysite 



Gummite 



Schrdtterite 



Allophane 



Alumocalcite 



Opal 



Chalilite 



Pitchstone 



Pearlstone 



• If the earths were to be united in a separate class, the latter would include 

 only Gibbsite, Diaspore, Hydrargillite, Brucite, Opal, Quartz, Corundum, and 

 Periclase. Such a class must necessarily precede the Geolites, and would cause a 

 total transposition of the orders qf the class Geolites, and of the two followin<» 

 classes. ° 



