13S EARTHS. ARGILLACEOUS. 40. Zeolithus. 
Found in Iceland, Hercynia, and Iran^l-vania ; colour moftly 
b!ui(h-\vhite, more rarely milk 'vhi-e or rtd : ihc ihortef 
faces generaily tcnnina'.ing each in two rhombs. 
tubtcus. White, folid, fomewhat pellucid, hardilh, fiiining iik®' 
mother of pearl, in minute aggregate cubes. 
Found in the Feroe Ijlan'ds, Iceland, and among the Balaltes oh 
mount Laufeke in upper Luface. 
frismaticus. White, pellucid, fiiining, hardifh, in 4-ri<ied prifms. 
1. With the prilins fedlanguUr. 
a. With the prifms pcrteft. 
Crytlalli Zeolitis ditliuifla. Crenfi. min. 1 1 w B. 
b. With the prifms terminating in a point at each end. 
Knock. Beylri chem. annal- 2. p, 133- 
c. V/ith the prifms terminating in a 3-fided pyramid. 
Karden Lejke mineral. 1. p. 1 33. 
d. The prifms equilateral; 
e. The prifms compreffed; 
Karjien Lethe mineral. I . ^.233. 
f. The pyramids comprefled and perforating themfclves Croft' 
wile. 
g. The prifms aggregate, 
In a fafciculate manner. 
In a llellatc manner. 
2. With the prifms obliqtiangled. 
Found in the FerOe IJlands, Iceland, Hercynia, and Jemtia : the 
priijris are commonly very fmall. 
capillaris. Snow-white^ (Lining, hardilh, in capillary pyramids, 
1 . With the pyramids diflinft. 
2, With the pyramids ctuftered id a fafclcled manner. 
Cryllalli Zeolitis capillaris. Cronst. min. Gi.C. 
scintillans. Hard, Alining. ' 
1. Of a common form. 
2. With the furfaces fpherical* 
3. In perfecl 6-fided prifms, with convex faces; 
Found in Scotland, near Edinburg, Dumbarton, and Strontian, iB 
Bafaltes, iii S’weden near Edelsforsi and in Weftrogoth ; moft 
commonly c&mpaft, rarely fioruus or radiate ; colour white, 
grey, ifabeliine or red, and admits a fine polifh. 
