15 
(Div. 1.) Tin ores : several modifications of room viii 
tin stone crystals ; wood tin. Iron ores : rnag- Nat. Hist. 
rietic iron stone ; several steel-grey and tarnished a able 
varieties of specular iron (eisen-glantz) mostly 
from the Island of Elba: micaceous iron (cubic 
oxide of iron of M. de Bournoni ; red and 
brown ironstone (some with pavonine and gold 
tarnish ; sparry ironstone ; argillaceous iron : 
reniform or nodular ironstone, called eagle stone 
(one set in gold, used as an amulet): iron py¬ 
rites in variously modified crystallizations : small 
cubic pyrites on blackish clay slate, also known 
by the name of Irish diamonds ; decomposed 
and liver pyrites ; septaria. Copper pyrites and 
variegated copper ore. 
(Div. 2.) Variegated copper ore : copper py¬ 
rites with opal, &c. ; native copper, dendritical,. 
laminar, &c. ; haematitiform and vitreous grey 
and red copper ores; earthy and ii durated 
copper azure in combination with malach te, 
copper green, &c. ; several varieties of mala¬ 
chite ; arseniate of copper (olive ore), &e. 
(Div. 3.' Arsenical ores : native arsenic (scher- 
ben cobolt) ; arsenical pyrites ; yellow orpiment: 
red orpiment or realgar. Copper nickel. Native 
bismuth : ar ifi ial crystallization of the same, 
by sudden cooling of the melted metal. Silver 
*res : native silver^ massive capillary, &c. j silver 
h 2 ia 
