Its ſpecific gravity is 10,552. The nitrous acid readily diſſolves it, the vitriolic muſt be boiling hot; the muriatic attracts its calx very ſtrongly, but cannot remove its phlogiſton and therefore cannot diſſolve it in its metallic ſtate. The quantity of this phlogiſton which cauſes the difference betwixt its metallic and its calciform ſtate I before expreſſed as 100 in 100 parts of ſilver. But the force with which it retains this portion of its phlogiſton is leſs than that of gold; that is, it occupies the third place in a ſeries of all the metals. It melts at 1000 degrees of heat.
ARGENTUM nativum (ſilver native) united to gold. Native.
ARGENTUM nativum (ſilver native), united to copper. Native.
ARGENTUM nativum (ſilver native), united both to gold and copper. Native.
ARGENTUM nativum (ſilver native), united to iron. Native.
ARGENTUM nativum (ſilver native), united to arſenic. Native.
The arſenic hardly exceeds ⁶⁄₁₀₀.
ARGENTUM nativum (ſilver native), united to antimony. Native.
When melted, it ſmokes but has no ſmell of arſenic.
ARGENTUM nativum (ſilver native), united to arſenic and iron. Native.
The three metallic ingredients are nearly in equal proportions.
All the ſpecies hitherto mentioned have metallic properties and appearances. The contaminating matters are ſometimes extremely ſmall, but not to be neglected when they exceed ¹⁄₃₀₀ part of the maſs.
ARGENTUM (ſilver) mineralized by the vitriolic and muriatic acids. Hornlike.
Cronstedt Min. §177. Minera argenti cornea. Horn-ſilver.
Mr. Woulfe[62], detected the preſence of the vitriolic acid. The ſilver ſeldom exceeds ⁷⁰⁄₁₀₀. I know not whether it is ever altogether free from vitriolic acid.
ARGENTUM (ſilver), mineralized by the vitriolic and muriatic acids, and ſulphur.
I doubt whether this be a diſtinct ſpecies, ſince the ſulphur and the ſalts ſcarcely admit of any other than a mechanical union.
ARGENTUM (ſilver), mineralized by ſulphur. Glaſſy.
Cronstedt Min. § 169. Minera argenti vitrea.
It ſometimes contains ⁷³⁄₁₀₀ of ſilver, or more.
ARGENTUM (ſilver), mineralized by ſulphur and iron. Marcaſitical.
Cronstedt Min. § 176, 10. Pyrites argenteus.
ARGENTUM (ſilver), mineralized by ſulphur and lead. Potters.
Cronstedt Min. § 176, 8. Galena.
The ſilver is only a few half ounces in a hundred weight.
ARGENTUM (ſilver), mineralized by ſulphur and arſenic. Red.
Cronstedt Min. § 170. Minera argenti rubra.
It contains about ⁷⁰⁄₁₀₀ of ſilver. Iron is frequently preſent, as in moſt other ſpecies but not always.
ARGENTUM (ſilver), mineralized by ſulphur, arſenic, and iron. Glittering.
Cronstedt Min. § 172.
I have examined ſome ſpecimens from Saxony which ſometimes contain no ſilver. May we not therefore ſuppoſe that the ſilver is native and not mineralized?
ARGENTUM (ſilver), mineralized by ſulphur, arſenic, iron and cobalt.
The ſilver is ſometimes more than ⁵⁰⁄₁₀₀.
ARGENTUM (ſilver), mineralized by ſulphur, arſenic, copper and iron. White ore.
Cronstedt Min. § 171. Minera argenti alba.
The proportion of ſilver varies much, ſometimes it is ¹⁰⁄₁₀₀ or more.
ARGENTUM (ſilver), mineralized by ſulphur, arſenic, copper, iron, and antimony. Grey ore.
Cronstedt Min. § 173. 6. Minera argenti griſea. In the province of Dal[63].
It contains ²⁴⁄₁₀₀ of copper, ſeldom ⁵⁄₁₀₀ ſilver.
ARGENTUM (ſilver), mineralized by ſulphur, arſenic, antimony and iron. Plumoſe.
Cronstedt Min. §173. 5. Federertz of the Germans[64].
It ſeldom contains more than a few half ounces of ſilver in the hundred weight.
It is abſurd to found ſpecies upon the differences of the matrix: theſe ought to be conſidered elſewhere.