METALS. 84. Cuprum. 26j 



FounJ in the mmes of Hercynia and AuHria^ in a lamellar or 

 imperfeftly ronchoidal llatc, or coating copper pyrites: co- 

 lour brownifh black, or dark yellowifh brown ; it contains 

 a large q^uantity of iron, and yields 7 or 8 per cent, of 

 copper. 



fulginosum. Black, fuperficial. 



Cuprum corroluin. WalL f/fi, z. p, 291. n. 17, 



Cuprum fulginofum Cronii miner ^ 



Black copper. ' Schme-Jfa mineral 2./. 131. 



Found in the TS\\Vi<t% oiHungaryy Saxony, and SiveJen, generally 

 in a friab'c ftate, and fcems to have been produced ^ y pyn- 

 tical copper ore or mundic which has been decompDled with 

 iron. 



caruleum. Sky-blue, foft, without metallic luftre, foluble in acids 

 without Cifervefcence and giving them a green co- 

 lour. 

 Ochra cupri ccerulea. Syst. nat. i. p. 162. ». 4, 

 Cuprum coeruleum. Wad fyU, i^ p zSg n^i^. 

 Earthy mountain blue. Kirivan. miner, 2. p. 129. 

 Oxy-carbonate of copper. SchmeiJJer miner , 2. p. 136, 

 Blue carbonat of copper. Thomfon chew, ^. p, j^'^. 

 Mountain blue. Berkenhout outl. p, 26"^, 



2. With a mixture of lime, and generally in a ftate of powder. 

 Lapis armenus. Syst, nat. xii 3. /. 146. «. 14. 

 Lapis armenus. KtriAjaji mineml. 2. p. 153. 

 Caerul. montan. lapide calcar. Wall.Jyd. 2. p, 28g. «. 15. f. 

 Blue friable copper ore. Schmeijfer mtner, z. p, \ 36. 



Found in the mines of Cornivall, DerhyJJ:ire^ &c. in Armenia, 

 ^i^heria, Hungary, Saxony, Sec. maflive and earthy: colour' 

 often verging* lo green : it is fometimes found in a powdery 

 flate, and fometimes invi-jing other ores: contains often 

 copper 69, carbonic acid 29, water 2. 



Cuprigo, Sky or fmalt blue, without metallic luftre, entirely folu- 

 ble in acids with efFervefcence and giving them a 

 green colour, 



Ochra Cuprigo. <Sy/?. nat, xii. 3. / 194, «. 12. 

 Striated blue ore. KirtMan mineral. 2 p, 130. 

 Radiated or fibrous azure ore. Schmeifser 2, p' 137, 

 Radiated blue carbonate of copper. Thcmjon chem, 4. /. 44. 

 Carbonate of copper, Soiveriy Brit. min. t. 94. 

 Found in moft of the copper mines of Europe, generally in fmall, 

 ' granular particles difperfed through different Hones, ftaladi- 

 tical, botryoidal, or cryftallized in rhomboidal prifms with 

 4-fided fummits : texture fometimes earthy, generally ftriatc 



