Records of the School of Mines and of Science Applied to the Arts, Band 1,Teile 3-4Longman, Brown, Green and Longmans., 1858 |
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adit level appear Ballygahan Ballymurtagh Barristown Bentyfield Sun Brought forward Caradon Cardiganshire Carmarthenshire Carried forward Cast Copper Chili Cleugh Connary copper COPPER imported copper lodes COPPER ORE sold copper pyrites Cornwall County Croghan Cronebane cwts deposits depth Devon dislocation district feet felspar fissures Flintshire flucan Fowey Fowey Consols galena Geological Glenmalure gold gossan granite Hills Holmbush Huel Huel Friendship Huel Jewell Huel Mary imported and exported inches Ireland iron pyrites Isle Lead imported Lead Ore Returns Lead Returns lode Luganure Mark Valley mass Merionethshire metallic metalliferous mica mica slate mineral veins ounces Ovoca mines Poldice Produce of Lead PUBLIC TICKETINGS quantities quartz Regulus rock Roskear side Silver sold by PUBLIC South Huel sulphur Sundry Mines surface Swansea Syke Tamar Consols Tigroney TIN exported Tons of Lead Tons.cwts Total of Lead Tregorden Treleigh Treviskey United Kingdom valley West Huel whilst Wicklow width zinc blende
Beliebte Passagen
Seite 370 - The slates [in this neighbourhood], which from the fossils occurring near Rathdrum, are referred to the lower Silurian period, are thinly laminated, and very uniform in strike and dip, though differing so much in mineral composition as to pass through many gradations of argillaceous, talcose, felspathic, and greenstone slate. Considered under a general aspect, the hornblendic varieties occur chiefly on the lower or ' lying ' side of the metalliferous portion, whilst the hanging side is occupied,...
Seite 406 - Moneyteige, * • • and, moreover, that from the form of the hills it would be very possible to derive the spread of the auriferous drift from that strongly marked ridge. Indeed, I am inclined to infer that it was the back or upper part of these lodes, the waste of which furnished the greater part of the alluvial metallic substances found in the valleys below, — and amongst them of the gold.
Seite 350 - When any duty under the head of " Service " or " Execution " is performed at a greater distance than a mile and a half from the court, there shall be paid, in addition to the above fees, for every mile or part of a mile (one way) . . .006 See rules under " The Judicial Stamps Ordinance, 1889,
Seite 453 - Produce of Lead Ore and Lead in the United Kingdom for the years 1845 and 1846.
Seite 372 - ... ordinary copper pyrites, and is of very low per-centage owing to the admixture of iron and of portions of quartz and talcose or sometimes chloritic slate, never occurring in a fragmentary state, but interlaminated sometimes so delicately as to appear In fine films, and contorted like the adjacent rock.
Seite 388 - In sinking the shafts at Crone-Bawn the first mineral met with is an ironstone. Beneath this they arrive at a lead ore, which seems mix'd with the clay, yet yields a large quantity of lead and some silver. Under this lies a rich rocky silver-ore, which sparkles brightly, and yields seventy five ounces of pure silver out of a ton of ore, beside a great quantity of fine lead. Having pierced some fathoms thro...
Seite 372 - Journal of the Geol. Soc. of Dublin, vp 281. t At Ballymurtagh " the surface has been marked by huge projecting masses of ' gossan ' or hydrous peroxide of iron. •:• .•;.-:,-•: The great metalliferous deposit * * * consists, at a small depth from the surface, of 12 feet in width of granular iron pyrites, of a pale colour, altogether free from gangue or veinstone. * * * " About 120 fathoms to the north of the principal vein, large masses of
Seite 401 - ... great supplies can be expected, which of late have given so great an impetus to communication and commerce. In the year 1795 it transpired that lumps of pure gold had been picked up in a valley on the flank of the mountain called Croghan Kinshela, in the southern part of the county of Wicklow. The discovery, which was purely accidental, was kept a secret for some months, but no sooner was it...
Seite 389 - The most remarkable of the secondary veins is, first, the ' Magpie ' running NW & SE, 4 to 8 feet wide, and producing copper pyrites and also native copper in quartz; secondly the 'yellow ore vein,' coursing from ESE to WNW, varying from 18 to 20 inches in width, and affording copper pyrites in a gangue of quartz and killas ; the third is the ' copse north vein,
Seite 373 - Record* of the School of Mines, i. pp. 379—80. (Abridged.) At Ballymurtagh " a cross-fissure, the sides of which were encrusted with crystallized copper pyrites and quartz, was found between the 33 and 66-fathom levels; with a course nearly at right-angles to that of the main lode, it came up to, but did not pass its north wall. * * * Its width was irregular; yet was sufficient to enable it to be worked ' on tribute ' for some 20 fathoms in length.