53 

 ZEOLITE GROUP— Continued. 



Natrolite. — continued. 



Acicular crystals in trachyte. 

 Loc, Aussig, Bohemia. 



Do. Acicular crystals in trachyte. 

 Ijoc, Aussig, Bohemia. 



Do. Fine yellow radiated masses, 



Mesotype. — Part of a nodule. 



ioc, Giants' Causeway. 



Do. Fibrous, with Analcime in basalt. 

 Z/oc, Island of Eigg. 



Do. Fibrous mass. 



Loc, Giants' Causeway. 



Do. Very thin fibres, with Calcite. 

 Loc, Scotland. 



Do. Very thin fibres, with Calcite, nearly compact. 

 Loc. Greenland. 



Do. Very thin fibres, with Calcite. 

 Loc, Greenland. 



Mesolite. — White and fibrous. 



Loc, S.\V. of RathHn Island. 



Do. White and fibrous. 

 Loc, Antrim. 

 Obs., presented by Capt. James. 



Do. White and fibrous. 

 Loc, Antrim. 

 Obs., presented by Capt. James. 



Faroelite. — In white radiated globules, and greenish 

 crystals. 



Loc, Faroe. 



Thomsonite. — Radiated and divergent, with pearly lustre. 

 Loc, DuiT)barton. 



Stilbite. — Small white crystals. 

 Loc, Hartz. 



