n6o 
METALS. 84- Cuprum. 
R.etJ e?rthv oxvc!e. Schmeifser mu.er. z.p. 130. 
Copper ochre. Tkom/oH (hem. ^ p 43. 
iound in the mine.' of m ci mpaft lumps f|.iriiiklcii 
' fifiall particles : colour hyacinth red, m re or leis ine.ii'h-^ 
to hroM-n or yellow: texture geperally earthy, r.uely 
pL-rteftly cor.choidal, and often tovcring other tuiliK s 
a cruft : it is eafiU pUiVerilaole, and makes a < onlidcrabl^ 
ftain on paper : when breathed on gtves'ap lar.hy fined : 
oft n decrepitates and blackens in the lire, and is not tota'O 
foluble in acid-, or volitile alka i : it has a gicateror Icls nd-y 
ture of iron, and contains fioiii 30 to 54 per cent, ot os)d‘^ 
of copper. 
ruirutn. Of a dii'l red or brownilli-red colour, Iiardilh, ■withou* 
metallic luftre. 
Cuprum rtihrum Syft. nat.-xW, 5. p- ». 9. 
Cupr. minera folida. Wall.Jsst. 2. p, 2:6. n. 3, a, 
Compaft red ore. Kir-iuanmiiieraL 2. p 135. 
Red copper glafs. Schmeifier miner 2 p 132. 
Glafs copper ore Berkenh outt. p 263. 
Red copper ore." ^homfon ehim. y- p 42. 
Red oxyde of copper. Sorwerhy Biit min. tab. 53. too. 
Found in the niifies of CommaU, India, Liberia, llungt”',i 
See in compaft mad'es of a common, lamellar, or hi rous tex-- 
tore, and often cry|tallized in cubes, prifmr- or pyranU'-?' 
colour various fiiades of cochircal red, making a bright re-^ 
ftre k, and giving a red powder: it decrepitates and tur” 
black in the fire, is lolublc in nitric acid with efl’ervefccnc^ 
and in the muriatic without effervefcencc : to the nitric atfu 
it gives a green tinge, and a blue one to volatile alkali t 
freijpently contains nearly 70 ’per cent of copper. 
hepaticum. Brow'n, foft, without metallic hiffrc. 
Cuprum CO lore hepatico. WWf ^yjr. 2. /i. 276. ». 3. b, c. 
Hepatic copper. Uchmeilser miner, z. p. 
Found xomnionly with the rid oxyde in the mines of 
Setxoiy, AuHrin, Sec. .Sometimes in an enthy and 
ftate, fometimes compaft and indurated, not unfrequen' f 
C' venpg other ores in It.daftitical concentric layers : co'P'’^ 
grtyifh, yel'owifli. or redd ifli brown : it fometimes conta’^^ 
a fm' ll quantity of filver, and is chiefly compofed of oxy'^'j. 
of copper and iron: it yields from 2 to 20 per cent, 
copper. 
pi ((turn,. 
Black, hardilh, without metallic luftre. 
' Cuprum ferro ct paux. fulph. Wall. /tft. 2. p. 280. n. 6 . 
Indurated copper, Uchmeifer miner. 2. /. 131. 
