i64 EARTHS. SILICEOUS. 55. Qiiartzum. 



(rittfitum. The furface marked with very fine parallel grooves, of a 

 common form. 

 Karsten Lej/ce mineral. I. />. 98. Born, ind i. ^. 25. z./>. 91. 

 Found in the mines oi Saxoxy and Hungary : colour white, vio- 

 let, or yellowilh brown. 



^lohuiusum. Of a more or lefs roimded form, pellucid. 



Quartz, feled. vagum. Syji. nat. xii, 3./>. 66. ». 7, 8, 

 Quartz in roundifli grains. Jameifon miner, i./. ^53. 



|. Of a more or lefs perfcdly globular form, 

 Compafk. 

 Hollow within, 

 ComprclTed. 



2, Of a more or lefs perfeclly oval form, 



3. Refembling ar\ almond in figure, 



4. Kidney. forni. 



5, Tuberous. 



Found detrched in the beds or banks of rivers in various parts of 

 Europe^ A/ioy and Africa; or compaded with other foflils in 

 Hungary, Saxony, &c. colour generally white, 



eylindricum. Separaling into cylindrical pieces. 

 Kard, Lejke mineral. \, p. IC5, 106. 

 Born, ind, foJs» 1. /. 25, 



1. With the cylinders parallel, 



2. With the cylinders diverging. 



Found near Schemniz in Hungary, in Saxony, and in other parts 

 of the continent : colour white, fuhopake, with the cylinders 

 thincr or thicker. 



granulart. Separating into granular fragments, 



Kard. LeJke mineral, \. f. 106. 



Granular quartz. Kirivan miner ^ i. p, 245, 



Quartz in grains. Schmeifser miner, i . />. 93. d. 



Found commonly in fniall grains, fometimes detached, fome- 

 times compaded together, in Norc^ay, Spain, France, and 

 Saxony: colour white, variegated, greer.ifh, red, or yellow- 

 brown : the grains are fometimes fo difpofed as to reflcd a 

 fine fplendour when poliihed. 



jtillatitium. Gradually depofited by water impregnated with particles 

 of quartz, and often covering other bodies as with 

 a bark. 



Stalad. quartzof. granulat. Sy/t. nat. xii. p. 185. n, 9. 



Staladitic quartz. Kirnx, an mineral. I, p. 245. 



Stajaditical quartz. Schmeifser mimr. \% p* ^\» 



.-.rt«4- 



