t^(j EARTHS. ARGILLACEOUS. 40. Zeollthui. 



Found \n Icelatii/, Henyniay znA 7ran(yl<vania : colour moflly 

 bluifh-whicej more rarely milk-white or red: the fliorter 

 faces generally terminating each in two rhombs. 



(rubicus, WhitCj folic!, fomewhat pellucid, hardifh, fhining like 

 mother of pearl;, in minute aggregate cubes. 

 F'ound in the Feroe IJIands^ Iceland^ and among the Bafaltes on 

 mount Laufeke in upper Lu/ace, 



pristnaticus. White, pellucid, fhining, hardifh, in 4-rided prifms. 



1. With the prifms rectangular. 



a. With the prifms perfedt, 



Cryftalii ZeoJitis diftinfta. Cronji. tnin, in. B. 



b. With the prifms terminating in a point at each end. 

 Knock, Beytr. chem. annul' Z. p, 133. 



c. V/ith the prifms terminating in a 3-fided pyramid* 

 Karlien Lejke mineral. I • ^' I 3 3» 



d. The prifms equilatieraU 



e. The prifms comprefTed. 

 Karjien he ike mineral, i. /. 233. 



f. The pyramids comprefled and perforating themfelvcs croft* 



wile. 



g. The prifms aggregate. 

 In a fafciculate manner* 

 Li a llellace manner, 



2. With the prifms obliquangled. 



Found in the Feroe IJlands, Iceland, Hercynia, and 'Jemtia : the 

 prifms are commonly very fmall. 



capillaris, Snow-whlte, fhining, hardifh, in capillary pyramids. 



1. With the pyramids dillindl. 



2. With the pyramids cluilered in a fafcicled manner, 

 Cryftalli Zeolitis capillarii. Cronst, min, iii.C. 



sclntillans. Hard, fhining. 



1. Of a common form. 



2. With the furfaces fpherical* 



3. In perfecl 6.fided prifms, with convex facei). 



Found in Scotland ^ near Edinburgh Dumbarton, and Strontian, iu 

 Bafaltes, \n S<weden ntdiv Edelsfors, and in Wejirogottj \ moil 

 commonly compart, rarely fibrous or radiate ; colour white, 

 grey, ifabehine or red, and ftdmits a fine poiifh. 



