EARTHS. CALCAREOUS. 12. Spatym. 
85 
Found in the mines of Scotland, England, Hmynia, Saxony, 
Germany, Hungary, and other places, opake or tranfparent, 
more commonly v.’lnte than cinereous or any other colour, 
fometimes one, fometimes both of the pyramids c!ongate4 
and acute, rarely diagonally ftriate > the cryftals generally 
mintue, clifpoled in lenes or cells, or in a rofular, globular or 
granular torm. 
ff’gonum. With a fingle 3 ficled pyramid. 
Natrum urinolum Syji. nat. xii. 3. p. tt. 1?. 
Spat cryflal. triangul. Wdl Jyji. min, 1. /. 142. «.6. 9. 
Gmel.Jyst. nat, 3. p. 447- tab 1 . f. 37. 
2. With the pyramids empty. 
3. The angles of thebafe of the pyramid truncate. 
4 With the pyramids excavated at top. 
5. With the pyramid augmented at the top with another pyramid. 
6. With thecryftals cluftered in an imbricate manner. 
Cryft. fubnitr. fpatof. Amocn. acad. i. p. 478. t 16, f, 14. 
Found in the mines of Derlyjhire, Sahlltrg in Snveden, Gcr 
many, Saxony, Hungary, &c. opake or tranfpaient, moll 
commonly white, rare^ brownifli or yellowith, very rarely 
olivaceous: the cryftals moil frequently minute, broader or 
narrower, fometimes capillary, longer or fliorter, often de- 
prefl'ed, cluttered fcatteringly or in an imbricate inar.ncr, or 
in a kidney or granular form. 
^^nticulare. With the cryftals appearing in a lenticular form. 
Natrum lentic. acaulon Muf. Ttft. 28 tab, 2 f.i. 
Found in the mines of Hercyma, Thuringia, Saxony, and Bi>- 
hemia, moll frequently white, oiten pellucid, or with a milk- 
white nucleus fhining through a tranfparenc coating: the 
cryftals fometimes hollow, frequently 6-lidcd, fometimes in- 
curved like the beak of an ancient faddle, often <iifpole4 
fcatteredly in cells or in a rofuUr form or that of fpheiical 
granulations. 
S^nafinum With 14 fides confiding of pentangles. 
Porus granaticus. Gerh, mineral, p. 49. n, 1 2« 
Found in the mines of England, Germany, Saxony, Hungary^ 
&.C generally white, -•■arely yellowhh. Is probably only j 
variety of Sp. cubicum or Sp. dodecaedruni. 
