250 
lutjraceus. 
nigrum. 
corneum. 
METALS. 82. Argentum. 
Hioots up^ in a fiiriib-Iike form, ant? is then called 
Dianne: its folution is colourlefs, highly cauliic, giving 
tlcin, hair, and ahnoll ail animal fubllances an indelib'* 
black colour; and when evaporated till a pellicle begins 
form on its f-rfacc, it depofits on cooling trardparent cryft’i* 
of nitrate oftilver, from which fs made the caiiltic ma'et‘“* 
called lafis infer nalis or Itmnr canffic: if its precipitate bf 
lime-water be dried and wafted with a folution of 
ammonia, it has a moll dangerous fulminating propertv, 
ploding moft violently on theilighell touch or" friilion.' Tf-i® 
powder is denominated fulminating poewder. 
Without luftre, friable, in thin pellicles intermixed witf* 
fpar. 
Born, ind.frfs. 2 /.no. Kir-ixan 2. /. 114. 
Found in St. George’s mine near Andreajburg : the pellicles ar® 
white, blue, or brownift. 
Deep black, friable, ponderous, elfervefcing with nitr**' ] 
acid, and recoveirng at lad its metallic fplendour ' 
when rubbed. I 
Argentum fuliginofum. Syjt. nat. xii. 3./. 150. ».‘g, i 
Argentum mineralifatum. Wall, jyft . p. n.b. ' 
Black filver. Kir.-wan mineral 2. /. I I 7. 
Black filver ore. SchmeiJJer min. 2. p. 50, 
Black filver ore. ^homfon them, 4./. 26. 
Found in the filver-mine.s of Siak, Britanny, Saxetrp, Hunga’P 
a.ni Bohemia, ftinctimes covering other minerals as with* 
coating, loinetimes iiuerfperfed in larger or lets particles, not 
unfrequently in a pulverjfed ftate : it commonly contain* 
fulphur, arfenic and copper, and fometitnes a little iron. 
Ponderous, foft, malleable, without metal'ic iudre, fornO' 
what diaphanous, eafily melting in the fire and eva- 
porating at laft in a white fetid I’moke. 
Argentum diaphanum. Sy/t. nat. xii. 3. / 148. n. 2, 
Argent, acid fal, mineralif. Wull.fut. 2. /. 331, n. 3. 
Corneous filver ore. K.ir-'wan mimral, 2, p. 1 13, 
Muriat of filver. Thomjon chem. 4 /. 30. 
Corneous filver. Schmefer miner 2. /. 56. 
Found in the mines of Mexico, Peru, Siberia, Hungary, Bohem'^t 
Saxony, Germany, See. it melts before a candle like wax o® 
fuet, and before the blowpipe leaves fmall gr-ins of pur® 
filver; foft and eafily cut with a knife: colour white, gre.v'r 
yellowift, green, violet or brown: fome imes it is fmnd 
irregular mafl'es, fomecimes in hoitow globular pieces, or 
thin plates, or in a date of powder, or tryllalliz.d tn fiiidl 
cubes or in accumulated flakes, or in a cieular, rarely capillar/ 
