6 
GREEK AKD BLUE COPPER ORES. 
60. Black Oxide, and sulphide 
of copper. 
Pembroke Mine, St. Austell, Corn¬ 
wall. 
Presented by R. Taylor, ibG-S. 
61. Black Oxide (Meluconite). 
Cornwall. 
62. Black Oxide. 
Cronebane Mine, County Wicklow, 
Ireland. 
Shelf VII. 
63. Large specimen of Bed 
Oxide associated with blue and 
green carbonates of copper. 
From the 120 fathoms level, Phoenix 
Mines, near Liskeard, Cornwall. 
Presented by W. W. Smyth, F R.S. 
64 & 65. Large specimens of 
Bed Oxide, massive, compact. 
Phoenix Mine, near Liskeard, 
Cornwall. 1851. 
66 & 67. Black Oxide (Mela- 
conite). 
Cornwall. 
Wall Case 2. 
Carbonates and Silicates of 
Copper. 
Malachite, or Green Carbo¬ 
nate, contains protoxide of copper, 
71‘91 ; carbonic acid, 19*93 ; 
water, 8*16.* 
Azurite, (Blue Malachite,) 
or Blue Carbonate, contains prot¬ 
oxide of copper, 69*19 ; carbonic 
acid, 25*58 ; water, 5*23. 
CiiRYSOCOLLA, 01 * Silicate of 
Copper, contains oxide of copper, 
45*2 ; silica, 34*3 ; Avater, 20*5. 
These minerals, of which the 
lirst is used as an ornamental 
substance as Avell as for the ex¬ 
traction of copper, occur in Britain 
only in subordinate quantities, and 
generally near the surface. 
Shelf I. 
68 & 69. Cupriferous Sand¬ 
stone, from the New Bed Sand¬ 
stone formation (containing about 
12 per cent, of copper). 
Alderley Edge, Cheshire. 
Presented by Mr. Mitchell. 
70. Cupriferous Sandstone from 
the “wall” of a vein in the Fiew 
Bed Sandstone. 
Pednall, Shropshire. 
71 & 72. Cupriferous Sandstone 
(green carbonate). 
Erdiston, near Felton, Shropshire. 
Presented by F. P'ankart, 
Several pits have been sunk along the 
course of the lode (N.E. & S.W.) for the 
distance of a quarter of a mile. Breadth 
of lode, 14 inches to 3 feet. Dip, 45° to 
the N.W. 
72a & b. Cupriferous Sandstone 
(blue and green carbonates). 
Ilawkestone, Shropshire. 
Presented by Lord Viscount Hill. 
73. Cupriferous Sandstone (gi’cen 
carbonate). 
From the “ Punter Sandstein of 
Alderley Edge, Cheshire. 
Presented by G. AV. Ormerod, F.G.S. 
Shelf II. 
74 to 77. Green Carbonate of 
Copper, cementing grains of sand 
and recent shells ; formed Avithin 
the last 15 years by the action 
of the rain-water percolating 
through the Avaste heaps of an old 
mine. 
Faised as an “ ore ” at IJuel 
Leisure, Perranzabuloe, Corn¬ 
wall. 1855-62. 
Presented by W. W. Smyth, F.E.S. 
78 & 79. Blue and Green Car¬ 
bonates OF Copper, Avith Copper 
Pyrites. 
Mallaen Mountain, Cil-cu m, Caer- 
marthenshire. 
Presented by Captain Harris. 
* It should be understood that the analysis here given represents the constitution 
cl the mineral in the highest state of puritj’’, and that the analysis of ordinary 
specimens Avould include varying amounts of substances accidentally mingled Arith 
them. 
