METALS. 83. Hydrargyrum. 255 



83 HYDRARGYRUM. Of a filvery-vvhite co- 

 lour becoming gradually blacker in the air, 

 always in a (late of fluidity in the common 

 temperature of the air, becoming folid and 

 malleable at a temperature of 0,39^, fpecific 

 gravity 13,568: evaporating in a low heat: 

 foluble in mod acids and imparting no colour to 

 the foluiion ; when difTolved in muriatic acid 

 and mixed with limie- water precipitating an 

 orange- red powder. ^ickftlver, 



virgineum. Pure, fluid, very ponderous, of a filvery colour and 

 luftre. 



Hydrargyrum nudum, S\ft. nat. xii, 3* />. 119, »« 1. 



Mercurius virgineus. Wall.fyst. 2. p. 148. «. i. 

 . Mercurius nativus. Cronft. miner. 2\<^, 



Argentum vivum. J^. Up/. 1720. n. 3./. 55, 



Native mercury. Kirtvan miner, z, p iz'^. 



Native mercury, Schmeijfer miner . 2. p. 62. 



Native mercury. Thomfon chem, 4. p. 33. 



Found in the quickfilver-mines near Sahiber^ in Snveden, at 

 Almaden in Spain^ Idria in Bohemia^ in the Palatinate near 

 IVolfftein and MoersfeUj in the dutchy of Deux pontSy and on 

 the mountain Stahlherg, Sec. in fmall globules fcattered 

 through different kinds of (lone?, clays and ores, and may be 

 eafily extracted by evaporation. : fpecific gravity about 1 3,600. 



^malgama* Pondrou?', of a filvery colour and luftre, rather folid, eva- 

 porating when heated and leaving pure filver. 



Amalg^ma. Cronfi miner, fed. 2 1 5. 



Native amalgama. Ktrivan miner, z. p. 223. 



Native amalgam. SchmeiJJer mineral, i, p^b^^. 



Amalgam of lilver. Thomfon chem, ^. p, 33. 



Found in the mines of Hungary near Zlana, ne?.r Mofchellarjburg 

 and on the mountain Stahlburg in the dutchy of Biponttum, 

 and in S^wedeny rarely in larger maiTes imbedded in quartz, 

 hornftone or fpar, but generally running through other ores 

 of quickfilver, f metimes in imperfeft cubes, prifms or pyra- 

 mids: colour filvery- white or grey, fometimes tarnifhed in 

 an iridefcenc manner: it is brittle or foft according to the 

 proportion of mercury, but is generally foft enough to bear 

 the impreffion of the thumb-nail, and when cut with a knife 

 gives a creaking noife : when rubbed on gold it leaves a white 

 ftreak : fpecific gravi':y above 10,000 : contains about mer- 

 cury 64. fiiver 36. Klaproth, 



