

I-. 



METALS. 84. Cuprum. 263 



2. Hard, brittle, taking a fine polifti, fraaure conchoidal finely 

 fibrous or lamellar. 



Cuprum viride gypfeum. Sy/l. nat. xii. 3./. 146. «. 15, 

 Terra gypfea verere mixta. Cronil. min. 36. 

 Compaft Malachite. Ktrtvnn miner aL z. p, i%z. 

 Compaft Malachit. Schmeijfer miner, z. p. i^^, 

 Compaft Malachite. Thcmjhn ckem. 4. p. 45. 



3. Hard, brittle, of a fibrous or radiated fraaure and filkyluftre^ 

 Ochra cupri gerininans. Syft,nat. xii. 3./^. 194. «. II. . 

 Fibrous Malachite. Kir ^vj an miner. 2, />. 131. 

 Radiated Malachit. SchmeiJJ'er mineraL 2. p. l^n. 

 Fibrous Malachite. T'hom/opi chem. ^. p. /^^. 

 Buflus-like Carbonate of Copper. Scwcby, t.^-jt 

 Green Malachite. Rajleigh fnfc, i./. j^f,(j» 



4. Cryftallized in flender needles. 



?c.:. Found in the various copper mines of Great -Britain y j^frica, 



Stberiai Hungary^ Saxony^ Bohemi'y &c, in folid milles or in 

 fmall particles interfperfed in diiferent matr-ces, or in vari'* 

 ous forms as kidney-fhuped, botryoidal, ftalaaitical, or in 

 concentric layers : colour from a dull to a light apple-green : 

 luffre Ufually filky : before the blowpipe it decrepitates and 

 blackens, but does not melt, and gives a green colour to the 

 flame: it effervefces with nitric acid, and tinges borax yel- 

 lowiih-grccn and alkalies blue : fpecific gravity from 3,571- 

 103,653: a fpecimen from Siberia contained copper 58,0. 

 carbonic acid 18,0. oxygene 12,5. water 11,5. Khproth. 



ferrugine- Olive-green, foluble in muriatic acid with effervefcence, 

 sum. and the folution giving a biue precipitate with pruffi- 



ate of potafs, without metallic luftre. 



1. Of an earthy texture, friable, clear olive-green. 

 Cuprum ochraceum. Kanten Lejke tnineraL 1 ^ /. 425. 

 Ferruginous green Capper ore. Schmei£er 2 p. 141. 



2. Of a compaft and flag-likc ftate, dark olive-green. 



Found near Camfdorf in Saxony, and near SaalfeU, in compaft 

 lumps or fmall particles interfperfed through other minerals; 

 texture generally more or lefs conchoidal, and is fomctimes 

 a-httle Ihining : wr.en rubbed it leaves a green trace: it is 

 compofed of copper, iron, oxygene, and carbonic acid. 



arsenicaU. Dull olive-green, becoming blue with pruffiate of potafs, 

 emitting arfenical fumes before the blowpipe and 

 leaving a dudile copper bead. 

 Klaprcih Schreh.BerLI^aturf.'J. f.\6o. 

 Philof^phican:ranfa5l,\'^o\,p. \t()MQ, 

 Olive Copper ore. Kirijoan mi^isral. z. p. 151. 



