110 
MINERAL VEINS. 
Slate, (Quartz, and Blende, ce¬ 
mented by Carbonate of Iron. 
Binner Downs Mine, Crowan, 
Cornwall. 
Presented by Sir H. T. De la Beche. 
308. Galena and Blende Lode. 
Plate rider ” showing the invest¬ 
ment of fragments of Rock first 
with chalcedonic, then with trans¬ 
parent Quartz. 
Smittergill Head, Cumberland. 
Presented by W. W. Smyth, P.R.S. 
309. Vein Stone, showing the 
. successive crystallizations around 
fragments of ‘‘ Plate rider,” con¬ 
sisting of transparent and opaline 
Quartz and Fluor Spar. 
From hard portions of the vein, 
Stanhope Burn, Weardale, 
Durham. 
310. Fragments of Greenstone, 
cemented by Quartz into a breccia. 
Theresa Lode, Schemnitz, Hungary. 
Shelf III. 
311. Brecciated Silver Lead 
Ore, producing on the average 
32 ozs. Silver per ton of Lead. 
Daren Lead Mine, near Aberyst- 
with, Cardiganshire. 
Presented by Captain John Pauli. 
312. Fragments of Magnetic 
Iron Ore, in Quartz, and inter¬ 
sected by veins of Epidote. 
Philipstad, Sweden. 
313. Part of a Copper Lode, 
exhibiting cavernous or “ vuggy ” 
part of a Lode. 
Trewarvas Mine, Trewarvas 
Head, Cornwall. 
Presented by Sir H. T. De la Beche. 
314. Portion of a Brecciated 
Lode, the cementing matter chiefly 
purple Fluor Spar. 
Crich, Derbyshire. 
315. Fragments of Limestone, 
around which have crystallized 
Fluor Spar, Barytes, and Calcite. 
Crich, Derbyshire. 
316. Fragment of rock ce- 
mented by Sulphate of Baryta. 
Part of the Lode of Lead of 
Ballinafunshogue, Glenmalure, 
County Wicklow, Ireland. 
Shelf IV. 
317 and 318. Fragments of 
Sandstone, cemented by pink 
Sulphate of Baryta. 
Cumberland. 
319. Illustration of Mineral 
Veins. Gypsum deposited in a 
boiler :—columnar-crystalline next 
the wall, brecciated towards the 
interior of boiler, and colourless 
crystals in the cavernous parts. 
Tamar Mines, Devon, 1855. 
320. Copper Pyrites, and frag¬ 
ments of black Slate cemented by 
Quartz. 
Knockmahon Mine, Co. Waterford, 
Ireland. 
Contributed by the Geological Survey. 
321. Galena and Sulphate of 
Baryta. 
Ireland. 
Presented by John Taylor, jun., F.G.S. 
322. Fragments of the adjoin¬ 
ing rock in a Tin Lode. 
Perran Downs, Perranuthnoe, 
Cornwall. 
323. Galena, with fragments of 
slate encased in quartz and chlorite. 
Cornwall. 
Shelf V. 
324. Lode containing irregular 
fragments of Galena, Blende, and 
Copper Pyrites, in a mass of Calc- 
spar. 
Henfwlch, Cardiganshire. 
325 and 326. Galena and Sul¬ 
phate OF Bary'ta. 
Ireland. 
Presented by John Taylor, jun., F.G.S. 
327. Zinc Blende, accompanied 
by Fluor. 
Smittergill Head, Cumberland. 
328. Breccia specimen of the 
Lode called the Wolfgang, 
From the Biber Adit, Christina 
Mine, Schemnitz, Hungary. 
329. “ Stamp ” Ore for Gold. 
Breccia Lode, with disseminated 
Galena and Pyrites. 
Theresa Lode, Schemnitz. 
