OKES or GOLD AND SILVER. 
27 
640. Antimonite, granular. 
Isle of Man. 
641. Antimonite, crystallized. 
Near Newcvmnock, Ayrshire. 
Presented by S. Girdwood. 
642. Jamesonite {Sulphide of 
Lead and Antimony)., massive, 
fibrous. 
Hud Boys, Endellion, Cormvall. 
643 8c 644. Jamesonite, fibrous, 
with Bletniere encruslino-. 
Endellion. 
645. Bleiniere, or Antimonite i 
of Lead, the result of the de- i 
composition of Jamesonite. | 
Endellion, Cornwall. \ 
Shelf III. 
646. Bournonite {Sulphide 
of Lead, Copper, and Anti¬ 
mony), crystals with iridescent 
tarnish. 
Lisheard, Cornwall. 
647. Bournonite {Antimonio- 
cupriferous Lead-ore), massive. 
Near Lisheard. 
648 8c 649. Bournonite, crvs- 
tallized with Quartz. 
Lisheard, Cornwall. 
Gold. 
Gold has been found from time immemorial in minute particles with 
The tin-ore in the stream Avorks of CornAvall. At the end of last century 
it was discovered in more important quantity in the valleys at the base of 
the mountain Croghan Kinshela, in Wicklow. Within the last few years 
s?veral remarkable gold-bearing veins have been found in North Wales, 
Shelf ly. 
650. Native Gold; stream gold, I 
as obtained in pebbles and grains , 
from the Tin Stream Works, | 
Carnon, near Truro, Cornwall. j 
651. Native Gold, as obtained 
in grains and small nuggets, from 
the washings. 
Wichlow, Ireland. 
652. Natia^e Gold, six larger 
nuggets. 
From the same locality. 
653. Pebble of Magnetic Iron 
from the detritus sand. 
Wicklow Gold Mines. 
AAoth Blende and Copper Py¬ 
rites. 
In a quartzose lode, Clogau Mine, 
near Dolqelly, North Wales. 
Presented by James Harvey. 
656. Natia^e Gold, dissemin¬ 
ated in Quartz Avith Blende. 
Dolfnvynog, near Dolgelly, North 
Wales. 
657 to 660. Natia'^e Gold, dis¬ 
seminated through Quartz, Blende, 
and Galena. 
Cwm-y-swm Mine, near Dolgelly, 
Merionethshire. 
Presented by J. Bruin. 
661 8c 662. Dressed Galena, 
rich in gold. 
Cwm-y-swm Mine, near Dolgelly. 
Presented by J. Bruin. 
654 8c 655. Natia^e Gold, [ 
Ores op Silver. 
About 562,000 ounces of silver are annually produced from the 
British mines, but almost the Avhole of this amount is derived from the 
comparatively small per-centage present in the argentiferous lead ores 
for AAdiich see Wall-cases 43, 44, 45 
Shelf V. 
663. Native Sila^er. 
In the gossan of Treathaids lode, 
Fowey Consols, St. Blazey, 
Cornwall. 1858. 
Presented by Captain Puckey. 
eastern side. 
664. Strings of Native Silver, 
with Ganoaiatite or Chenoco- 
PROLITE (Goose-dung ore). 
Dolcoath, Camborne, Cornwall. 
1860. 
