NATIVE COPPER. 
3 
Waterford, Wicklow, and Cork, in Ireland ; and an estimate of the 
importance of the copper mines of the country may he formed from the 
following table, showing at a glance the quantities actually sold in the 
year 1863 :—* 
District. 
No. of 
Mines. 
Copper 
Ore. 
Copper 
produced. 
Y alue 
of Copper. 
Cornwall and Devon -0 f 
wiles"™ - r 1 
Ireland - - J t 
Private sales, including a few English 
mines, Sic. 
Total for the year 1863 
190 
• • 9 
12 
8 
20 
Tons. 
169,971 
4,377 
10,110 
16,489 
10,000 
Tons. 
10 6 
48.5 
654 
1,562 
650 
£ 
1,077,119 
47,942 
64,647 
154,900 
65,000 
239 
210,947 
14,247 
1,409,608 
Upwards of 35,000 persons are regularly employed in these mines. 
The copper ores of Britain are found almost exclusively in lodes, or 
regular veins which traverse granite and slaty rocks (killas) of the 
Devonian, and in some cases of the Silurian period ; the only instances 
of their occurrence on a large scale in limestone are at Llandudno in 
North Wales and Ecton in North Stalfordshire. They are commonly 
associated with iron pyrites, quartz, fluor-spar, and chlorite ; more 
rarely with tin ore, zinc-blende, galena, and calc-spar. The ore is 
seldom obtained in remunerative quantity near the surface, and in 
some cases is extracted from the depth of about 300 fathoms, or 1,800 
feet. 
WESTERN SIDE. 
Wall Cases 1 to 14. 
Wall Case 1. 
Shelf I. 
1. Native Copper, associated 
with quartz. 
From the Great St. George Mine, 
Perran Perth, Cornwall. 
Presented by H. Humphries. 
2. Native Copper. 
From Pembroke Mine, St. Austell, 
Cornwall. 
Presented by R. Taylor, F.G.S. 
3. Native Copper, intermingled 
with quartz. 
Devon and Courtnay Mines, near 
Tavistock, Devon. 
Presented by William Randle. 
3a. Native Copper, in trap- 
rock. 
From Arran-more, Co. Donegal, 
Ireland. 
4, 5, & 6. Native Copper, in 
strings and sheets in trap-rock. 
From the neighbourhood of Glas¬ 
gow. 
Presented by Nr. Graham, 
Shelf II. 
7. vString of Native Copper 
and Red-oxipe of Copper. 
St. Austell, Cornwall. 
8 & 9. Native Copper, den¬ 
driform. 
From the Lizard District, Corn¬ 
wall. 
* See the Mineral Statistics compiled by Mr. Robert Hunt, Memoirs of the Geolo¬ 
gical Survey, 1863. 
