cf the Pyrites. $% 



is finer, litter for nfe, and more valuable than 

 that from mixt vein-ftone. Again, ftone-coal 

 pits give an ocular demon ftration to the fame 

 purpofe > but here the pyrites is rather irony than 

 coppery. Pyrites is alio readily found along with 

 lime-Hone, as the abovementioned iron-ftone of 

 Orbis fhews : and in lime-ftone beds probably, 

 as thefe commonly form fquats-, tho' I cannot 

 affirm, I ever favv much pyrites there, as I have 

 in Jhiver and ftone-coal. 



3. This mineral has been found to manifeft 

 itfelf neft-wife, or kidney-wife, in proportion as the 

 foffils, that lie near us, have begun to be more 

 carefully examined : and thus it appears not only 

 in loams, lutes or clays, in marks, in marley lime- 

 Hone and in lime-ftone, but with this difference 

 alfo, that whereas in real ore- veins it is not un- 

 mixed with mock- lead, mifspickel, and confequently 

 arfenic and fandarach ; here on the contrary it 

 is quite pure, v/ith only its iron and fulphur, 

 feldom any copper. 



4. Infkoads, or broken fragments of veins, and 

 confequently, 



5. In ftr earn works ; as the pyrites may, equally 

 with other mixt-work, be fuppofed to have been 

 tern and fhoved from their veins, and accumulated 

 by ftreams or floods. Nay, according to Rof- 

 ler *, Drufe, Wolfram, alfo granates, and iron- 

 corns, nay, even quick filver itfelf, is found in 

 ftream- works. 



6. It deferves peculiar attention, that in old 

 mine -works, the pyrites is found grown anew on 

 /inter, of which in the following chapter - 9 a cir- 

 cumftance ferving to convince every impartial en- 

 quirer, that the pyrites lying on drufe and fiffures, 

 are, with refpect to their origin, the effect of a 



E 2 rem- 



* Bsrg-baufpiegel, p. 12, 



