EARTHS. AGGREGATE. 64. Arenarius. 



207 



ferrugino' 

 sus. 



cobaltifer. 



cuprifer. 



Lapis arenac. ochra, &c. Crondt tnin* 274.. 4. 



Found in Snjoeden and Germany^ of ?. red or yellow colour* 

 The inhabitants near the river Hauhipuc/as in Ojlrohothniay dig 

 the fand from the bottom oi the river, colicdl: it into heaps^ 

 and leave it for a year or two to the influence of the atmof- 

 phire, when it becomes fo impregnated with iron that they 

 iorm their heanhs of it. 



Confifting of grains conglutinated with a larger portion of 

 oxyde of iron. 

 Ferruginous fandftone, Kiri.vanmineraL \. p. ^6^, 

 Sandltone. SoiKerhy Brit.'min. i . />. i 19. /. 55. 

 Found in Britain and Germany, of a brovvniih or ycllowifh co- 

 loi]r, and is frequently impreffed with the cafts of fhells. 

 It is fometimes io rich in iron ore as tc> be worked with ad- 

 vantage, 



Confiding of grains conglutinated by oxyde of cobalt. 

 Cro7ift. miner, fe^t 276. 3. 

 Found in the mines of Germany, 



Confiding of grains conglutinated by a cement of oxyde of 

 copper. 

 Cronft. miner, feSl. 276. 2. 

 Found in the mines of Siberia and HeJJe, 



griseus* 



E. More compound, 



Compofed of unequal grains cemented by indurated atu- 

 mina, with frequently fragments of quartz and Hate. 



Cbem, annaU 1785. 2. p. 431. & J 786. 2./». 241. 



Granwacke. Ladus boeb, i. /. 141. 



Found in the Ural mountains of Siberia, in thofe of Saxony and 

 other parts of the continent, in flrata alternating with layers 

 of Hate and lydian flonc, and is often rich in metallic veins: 

 the argil is blueilh-grey tending to black ; the grains gene- 

 rally white, rarely greenifh or red, but varying much in fize 

 and proportion : fometimes it contains fpar, or bitumen, or 

 the vcftiges of animal or vegetoble fubltanccs, with rarely a 

 little mica. 



M'vacularis Confiding of fmaller grains mixed with mica. 

 Saxum cotaceum. Syjt. nat, xii. 3. />. 74. n. 12. 

 Cos faxofa. Wall.Jyfi^ miner, 1. p, 193, «. 5. 

 Wheiftone, Schmei/ser miner, i. p, 327. 



2. "Saxum flenonis. Syft* nat* xii. 3. />. 75. »• 1 3^ 



3. Saxum undulatum. 5>//, «,«/, xii. 3. ;5. 7^. «. 9« 



Found every where in mountains and hills of fand, efpecially 

 thofe of a more tecent date : colour reddifli, yellowiih, r*r 



