The Mineralogy of Nova Scotia: A Report to the Provincial Government |
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abundant Acadia acid agate Albion Mines amethyst amount analcime analysis anhydrite ankerite Annapolis Annapolis county Antigonish Antigonish county assay average barytes Basin bricks brine brown calcite Cape Breton Carbonate of lime carboniferous cement cent clay coal coke Colchester County colour contain Cove crystals Cumberland Dawson deposit depth Digby Digby county district dollars East River Exhibition exported feet thick galena gallon gave Gesner gold grains grants gypsum Halifax Hants county Harbour hematite heulandite inches lead limestone localities Lunenburg Lunenburg county magnesia manganese marble masses mentioned metal miles mineral Nova Scotia obtained occurs oxide peroxide of iron Pictou Pictou county plaster plumbago province pyrolusite quantity quarried quartz railway rich rock salt samples sand sandstone seam shaft shewing shewn siliceous silver slate specimens spring stone sulphate sulphur surface Teny Cape tons trap veins Windsor yield
Popular passages
Page 120 - ... straw, so as to prevent the reduced quartz from filling the holes in the false bottom. Muriatic acid should then be added if manganese alone is used, and diluted sulphuric acid if manganese and salt have been employed, and, after having left the whole in contact for twelve hours, water should be added so as to fill up the whole space between the false and true bottoms with fluid. This fluid should then be pumped up and allowed to percolate through the mass, and after this has been done several...
Page 85 - Mine and further to the eastward, is S. 98° W. magnetic, the variation being 21° west. At the Acadia Mine this course deviates about 33° from that of the containing rocks. In other localities, however, the deviation is much smaller ; and in general there is an approach to parallelism between the course of the vein and that of the rock formation of the hills, as well as that of the junction of the carboniferous and metamorphic systems.
Page 44 - ... and the alluvial deposits derived from these and the surrounding rocks, but also in the claystone itself, and, contrary to expectation, flat bands of auriferous quartz have been discovered in dykes of diorite which intersect the Upper Silurian or Lower Devonian rocks. Quartz of extraordinary richness has been obtained from these bands, and the new experience of the miner is leading him to look for gold in places heretofore entirely neglected.
Page 80 - ... of sodium to the acid mixture, will decompose any silicates which may remain, and volatilize the silica present. The mass is now washed with abundance of water, dried, and heated to redness. This last operation causes the grains of plumbago to exfoliate, and the mass swells up in a surprising...
Page 29 - It contains about the same quantity of earthy matter with Pictou coal; but in quality and color the ash resembles that of Sydney. Practically it will be found to be a serviceable coal for domestic fires, well adapted for smith's use, and, from the large quantity and high illuminating power of its gaseous matter, probably a good gas coal. There should be little waste in its extraction, and it will suffer little by being banked or kept in the open air.
Page 86 - ... deviation is much smaller; and in general there is an approach to parallelism between the course of the vein and that of the rock formation of the hills, as well as that of the junction of the Carboniferous and Metamorphic systems. The vein, for a space of seven miles along the hills, is always found at distances of from 300 yards to one-third of a mile northward of the last Carboniferous beds, and always in the same band of slate and quartzite. Westward of the Acadia Mine the course of the vein...
Page 85 - ... ankerite is intimately mixed with crystals and veinlets of yellowish spathose iron. The red ochrey iron ore occurs in minor veins and irregular masses dispersed in the ankerite. Some of these veins are two yards in thickness ; and the shapeless masses are often of much larger dimensions. Specular iron ore also occurs in small irregular veins, and in disseminated crystals and nests. At one part of the bank there appears to be a considerable mass of magnetic iron ore, mixed with specular ore ;...
Page 86 - ... conglomerates, dipping to the south, and forming the base of the carboniferous system, are seen to rest unconformably on olive, black and brown slates, whose strike is S. 75° W. The continuation of the iron vein has not yet been observed in the bed of this stream. Further eastward, on the high ground between the Great Village and Folly rivers, indications of the ores of iron have been observed ; especially near the latter river, where in two places small excavations have exposed specular and...
Page 85 - ... the other contents of the vein, and greatly exceeds them in quantity. "Where not exposed, it is white and coarsely crystalline. On exposure it becomes yellowish ; and near the surface, as well as on the sides of fissures, it is decomposed, leaving a residue of yellow ochrey hydrous peroxide of iron. In some parts of the vein, the ankerite is intimately mixed with crystals and veinlets of yellowish spathose iron. The red ochrey iron ore occurs in minor veins and irregular masses dispersed in the...
Page 120 - ... attracting public attention, it may be advantageous to persons interested in gold-mining to be made acquainted with a new and simple method of extracting gold from such ores, which presents the advantages of not only dispensing with the costly use of mercury, but of also extracting the silver and copper which the ore may contain. Further, it may be stated that the process can be profitably adopted in cases where the amount of gold is small, and the expense of mercury consequently too great.