. 0HE8 or ZINC. 
23 
533. Blende (black variety), 
crystallized in octoliedrons. 
St. Agnes, Cornwall. 
Shelf V. 
534. Blende, yellow and trans¬ 
parent. 
North Huel Tamar, Launceston. 
Sulphide of zinc of this purity is ex¬ 
tremely rare in Cornwall, the blende of 
that county usually being much mixed 
with variable proportions of iron. The 
lode whence this specimen was obtained 
has been worked for its lead, and it also 
contains some copper pyrites, and is 
brecciated, as may be seen by this speci¬ 
men. 
Presented by Sir H. T. De la Beche. 
535. Blende, transparent, inter¬ 
mingled with Galena. 
From the same Mine. 
536. Blende, a large crystal, 
highly pure and transparent. 
North Huel Tamar, 
537. Blende (yellow trans¬ 
parent variety) crystallized. 
Goonhavern Mine, North of Truro, 
Cornwall. 
Presented by W. Driver. 
538. Two small specimens of the 
same, showing very brilliant cleav- 
ao^e Dianes. 
539. Blende, brown variety. 
From near Truro, 
540. White Blende (a very 
rare variety), crystallized, with 
Quartz. 
Huel Barrow, St. Ag7ies, Cornwall. 
Presented by Stephen Davey. 
541. Blende, occurring in the 
Mountain Limestone. 
Ecton, North Staffordshire. 
Presented by 'VY. AY. Smyth, P.K.S. 
542. Blende, with Quartz. 
Strontian, Argyleshire, Scotland. 
. Shelf VI. 
CiiDMiuM, a mineral often asso¬ 
ciated with Zinc. 
543 & 544. Greenockite (Sul¬ 
phide of Cadmiitm), occurring in 
brilliant yellow hexagonal crystals, 
with Prehnite in a trap rock. 
At Bishopton, Benfrewshire, Scot¬ 
land, with Old Kilpatrick, the 
only known localities. 
No. 544 presented by Earl Cathcart. 
Electric-calamine ; or Pris¬ 
matic Calamine ; Smithsonite, off 
Brooke and Miller, (Hydrated 
Silicate off Zinc) ; consisting of 
oxide of zinc, 67; silica, 26 ; 
water, 7. 
545to547. Electric-calamine, 
botryoidal. 
Fowey Consols, St. Austell, Corn¬ 
wall. 
548. Electric-CALAMINE, bo¬ 
tryoidal and mammillary, upon 
Blende, with a little carbonate. 
From the 70 fathoms level of Way’s 
lode. Great St. George Mine, 
Perramahuloe. 
Presented by AY. AY. Smyth, E.E.S. 
549. Electric-calamine, co¬ 
lored with copper (Cupreous Sili¬ 
cate of Zinc). 
Roughtengill, Cumberland. 
Calamine ; Lapis Calamiuaris; 
Smithsonite, off Dana, Haidinger, 
dpc. (Carbonate off Zinc)', consist¬ 
ing of oxide of zinc, 65 ; carbonic 
acid, 35. 
550. Calamine, coating Blende. 
Huel Mary, Lanescot, near Bod¬ 
min, Cornwall. 
551. Calamine, stalagmitic, 
very pure. 
Aldstone, Cumberland. 
Presented by J. Taylor, E.R.S. 
552 & 553. Calamine, stalag¬ 
mitic, mammillated. 
Farnberry Mine, Aldstone Moor, 
Cumberland. 
Presented by Melville Attwood. 
Shelf VII. 
554. Calamine, botryoidal, and 
massive. 
Aldstone Moor, Cumberland. 
