metals. 85. Ferruni. 
. 277 
to the air, though according to Mr. Sowerby, it is fometimes 
blue when frefh gathered and firfl: broken : it Itains ftrongly, 
feels harlh to the touch, is moderately heavy, and diffolves 
readily in acids : when heated on red hot coals it inflames 
and leaves a red powder; before the blowpipe it becomes 
reddilh brown, and melts into a black bead, and tinges bo- 
rax of a dark yellow: in water it preferves its colour, but 
becomes black in oils : it is by Klaproth confidered as a 
phofphat of iron. 
Not magnetic, hardifli, earthy, opake, without luftre, 
blue, not changing its colour in a folutipu ot foda, 
becoming grey in the fire. 
Klaproth. Jcbr. berl. naturf. 10. 91. 
Found near Vorau in Hungary, forming together with quartz 
and white micaceous gneifs a vein from a quarter to half an 
inch thick : when fiift dug from the mine it is of a fine blue 
colour, but lofes all its colour when thrown on red hot cin- 
ders: with borax it melts into a pale yellow tranfparent glafs, 
with phofphoric acid a colourlefs one : it is not like the lall 
foluble in acids : it confifts of oxyde of iron, alumina, and 
filica. 
“<iajuotum. Not magnetic, without luftre, opake, of a dull colour, 
humid. 
Tophus Fubalcaini- Spt. nat. xii 3. p. 187. ». 5, 
Ferrum limofum. Wall fyH. 2. p. 255. «. 19. 
Lowland iron ore. Ki'-wan tr.iner. 2. p. 179. 
Subaqueous non ore. SchmeiJJir miner, z. p. 106. 
Bog iron ore. Thomfan them, p. 6 i. 
Found in Great Britain and various parts of Europe, in low 
fvvampy fnuations, flagrant lakes or in brook-waters, fome- 
times maflive, but commonly in detached lumps of various 
fhapes, as placentifonii, flit and rounded, globular or kidney- 
form when it is called Eagle /tone, granuhr, or pifiform, 
generally perforated, fiftular, or fpongy; colour brown with 
vaiious (hades of red, gr cn, yellow, blue or giey : texture 
earthy, brittle : it cor.fifts of oxyde of iron combined with 
phofpho.'ic acid and alumina. 
'vlridt. ' Of a green colour, fhining, diffolving in acids with diffi- 
culty, friable. 
Hoffmann Berg. Journ. 1 1 . i . /•. 397- 
Green martial earth. Kirriuun min. 2. p. 1 88. 
Green iron earth. Schmei(jer miner, z.p. 108. 
Found at SchneeUrg in a matrix of quaitz and clay, compaft, 
folid, or like a corroded Hone, ( ftener invefting or incum-' 
bent, and feldom indurated ; colour various (hades of greeiv 
