SPANISH LOCALITIES. 27 



Northwestern Europe. — Aiiialgams liRve bcGn foiuid at Kongsberg, in Nor- 

 way/ and at Sala, in Sweden," but no cinnabar has been discovered in 

 Scandinavia, so for as I am aware. In the Scotch liighlands. Black ^ re- 

 ported an ore containing lead, copper, and a little silver, which, on distilla- 

 tion, yielded some mercury. Possibly this may have been a tetrahedrite. 

 According to Prof. R. Jameson, a quantity of quicksilver was found in a 

 peat moss on the Scotch island of Isla about the beginning of this century. 

 Some further search was made with no result* I should regard such an 

 occurrence as almost certainly due to human agency. 



Portugal. — A quicksilver mine is said to have existed in the latter part 

 of the last century in gravels. The locality seems to be at Conna, on the 

 Tagus, not far from Lisbon.^ 



Spain. — Near Mieres,*' to the south of Oviedo, in Asturia, cinnabar 

 deposits, which had been worked long ago, and probably by the Romans, 

 were rediscovered soon after 1840. The country rock in this district is 

 composed of carboniferous sandstones and schists. The crest of a range 

 of hills is formed of a breccia, bounded on both sides by broken and con- 

 torted beds of sandstone and schist, and composed of fragments of these 

 rocks. In this breccia, or belt of extreme disturbance, occur cinnabar, 

 pyrite, mispickel, and realgar. The ore is thus similar to that of Huan- 

 cavelica. The cinnabar fills cracks and interstitial cavities and sometimes 

 appears as impregnations Some streaks of ore are four to six inches in 

 width. My authority speaks of no gangue mineral, but mentions a deposit 

 of ferrous carbonate in one portion of the belt with the cinnabar, and, so 

 far as gangue minerals are present, they are perhaps carbonates. The 

 ore-bearing belt is forty-five to sixty-five feet wide and about four miles 

 in length. It seems manifest, as Mr. Klemm concludes, that these deposits 



' Reports of tlie American Commissioners ou the Paris Exposition of 1878, Mining Industries, by 

 J. D. Hague, vol. 4, p. 270. 

 ■'' A. Niiggerath, loc. cit. 



^Niiggerath, loc. cit., probably Joseph Black, who wrote various treatises towards the close of tho 

 last century. 



* Mineralogical Travels etc., vol. 1, 1813, p. 153. 



* V. d'Aoust, Comptes rendus Acad, sci., Paris, vol. 83, 1876, p. 289, and Niiggerath, loc. cit. 

 « J. G. Klomin : Berg- und hiitteum. Zcitung, vol. 26, 1867, p. 13. 



