IN the ordinary mineral productions, such as brick-earth, stone adapted to building, as well as for any kind of workmanship, and in sand of all qualities, the resources of the United States are inexhaustible. The same may be said of many minerals of less universal occurrence, that may seem to merit a more particular description. To begin with the precious metals. The gold region commences in Virginia, and extends south-west through North Carolina, along the northern part of South Carolina, thence north-westwardly into Alabama, and to its termination in Tennessee. In 1825, Professor Olmsted published a particular account of the gold region of North Carolina, as it was then explored; it has since been found to be vastly more extensive, but the richest mines are still worked in the region which he described, in the counties of Mecklenburg, Rowan, Cabarras, Anson, and Davidson. This account, which is quite minute and interesting, we present slightly abridged in the following pages:

A geographical description of the gold country, would present little that is interesting. The soil is, for the most part, barren, and the inhabitants generally poor and ignorant. The traveller passes a day without seeing a single striking or beautiful object, either of nature or of art, to vary the tiresome monotony of forest and sand-hills, and ridges of gravelly quartz, either strewed coarsely over the ground, or so comminuted as to form gravel. These ridges have an appearance of great natural sterility, which is, moreover, greatly aggravated by the ruinous practice of frequently burning over the forests, so as to consume all the leaves and undergrowth. The principal mines are three—the Anson mine, Reed’s mine, and Parker’s mine.

The Anson Mine is situated in the county of the same name, on the waters of Richardson’s creek, a branch of Rocky river. This locality was discovered by a ‘gold hunter,’ one of an order of people, that begin already to be accounted a distinct race. Arivulet winds from north to south between two gently sloping hills that emerge towards the south. The bed of the stream, entirely covered with gravel, is left almost naked during the dry season; the period which is usually selected by the miners for their operations. On digging from three to six feet into this bed, the workman comes to that peculiar stratum of gravel and tenacious blue clay, which is at once recognised as the repository of the gold. The stream itself usually gives the first indications of the richness of the bed through which it passes, by disclosing large pieces of the precious metal shining among its pebbles and sands. Pieces unusually large were found by those who first examined Anson’s mine, and the highest hopes were inspired. On inquiry, it was ascertained that part of the land was not held by a good title, and parcels of it were immediately entered; it has since been the subject of a constant litigation, which has retarded the working of the mine.

Reed’s Mine, in Cabarras, is the one which was first wrought; and at this place, indeed, were obtained the first specimens of gold that were found in the formation. Alarge piece was found in the bed of a small creek, which attracted attention by its lustre and specific gravity; but it was long retained in the hands of the proprietor, through ignorance whether or not it was gold. This mine occupies the bed of a branch of Rocky river, and exhibits a level between two hillocks, which rise on either side of the creek, affording a space between from fifty to an hundred yards in breadth. This space has been thoroughly dug over, and exhibits at present numerous small pits, for a distance of about one fourth of a mile on both sides of the stream. The surface of the ground, and the bed of the creek, are occupied by quartz, and by sharp angular rocks of the greenstone family. The first glance is sufficient to convince the spectator, that the business of searching for gold is conducted under numerous disadvantages, without the least regard to system, and with very little aid from mechanical contrivances.

Large pieces of gold are found in this region, although their occurrence is somewhat rare. Masses weighing four, five, and sometimes six hundred pennyweights are occasionally met with, and one mass was found that weighed in its crude state twenty-eight pounds avoirdupois. This was dug up by a negro at Reed’s mine, within a few inches of the surface of the ground. Marvellous stories are told respecting this rich mass; as that it had been seen by gold hunters at night reflecting so brilliant a light, when they drew near to it with torches, as to make them believe it was some supernatural appearance, and to deter them from further examination. No unusual circumstances, however, were really connected with its discovery, except its being found unusually near the surface. It was melted down and cast into bars soon after its discovery. The spot where it was found has been since subject to the severest scrutiny, but without any similar harvest.

Another mass, weighing six hundred pennyweights was found on the surface of a ploughed field in the vicinity of the Yadkin, twenty miles or more north of Reed’s mine. Specimens of great beauty are occasionally found, but, for want of mineralogists to reserve them for cabinets, they have always been melted into bars. Mr.Reed found a mass of quartz, having a projecting point of gold, of the size of a large pin’s head. On breaking it open, a brilliant display of green and yellow colors was presented. The gold weighed twelve pennyweights. Mineralogists may perhaps recognise, in this description, a congeries of fine crystals, but on that point the proprietor was uninformed. Although fragments of greenstone, and of several argillaceous minerals, occur among the gravel of the gold stratum yet, in the opinion of the miners, it is never found attached to any other mineral than quartz. Indeed, it is seldom attached to any substance, but is commonly scattered promiscuously among the gravel. Its color is generally yellow, with a reddish tinge, though the surface is not unfrequently obscured by a partial incrustation of iron or manganese, or adhering particles of sand. The masses are flattened and vascular, having angles rounded with evident marks of attrition.

Parker’s Mine is situated on a small stream, four miles south of the river Yadkin. As in the instance already mentioned, excavations were numerous in the low grounds adjacent to the stream; but the earth for washing, which was of a snuff color, was transported from a ploughed field in the neighborhood, elevated about fifty or sixty feet above the stream. The earth at this place, which contained the gold, was of a deeper red than that of either the other mines. The gold found here is chiefly in flakes and grains. Occasionally, however, pieces are met with that weigh one hundred pennyweights, and upwards; and one mass has been discovered that weighed four pounds and eleven ounces. This is said to have been found at the depth of ten feet.

The mines have given some peculiarities to the state of society in the neighboring country. The precious metal is a most favorite acquisition, and constitutes the common currency. Almost every man carries about with him a goose quill or two of it, and a small pair of scales in a box like a spectacle case. The value, as in patriarchal times, is ascertained by weight, which, from the dexterity acquired by practice, is a less troublesome mode of counting money than one would imagine.

The greatest part of the gold collected at these mines is bought up, by country merchants, at ninety or ninety-one cents a pennyweight. They carry it to market-towns, as Fayetteville, Cheraw, Charleston, and New York. Much of this is bought up by jewellers; some remains in the banks; and a considerable quantity has been received at the Mint of the United States. Hence it is not easy to ascertain the precise amount which the mines have afforded. The value of that portion received at the mint, before the year 1820, was forty-three thousand six hundred and eighty-nine dollars. It is alloyed with a small portion of silver and copper, but is still purer than standard gold, being twenty-three carats fine.

Since the year 1827, the gold mines of Virginia have attracted considerable attention. The belt of country in which they are found extends through Spotsylvania and some neighboring counties. The gold region abounds in quartz, which contains cubes of sulphuret of iron. These cubes are often partly or totally decomposed; and the cells thus created are sometimes filled with gold. The gold is found on the surface and in the structure of quartz; but in the greatest abundance resting upon slate and in its fissures. It is diffused over a large extent, and has not yet been found sufficiently in mass, except in a few places, to make mining profitable. The method of obtaining the metal is by filtration, or washing the earth, and by an amalgam of quicksilver. The average value of the earth yielding gold, is stated at twenty cents a bushel.

Habersham and Hall counties are the chief seat of the gold mines of Georgia, and its discovery there has been very recent. The search was commenced by a gentleman of the name of Wilhero, and proved eminently successful; deposits of gold were found in the counties mentioned, and discovery followed discovery. In the Cherokee nation, which was separated by the Chestetee river, the indications of gold were not strong, but report exaggerated them, and this unfortunate nation was intruded upon as a common; at one time, about five thousand adventurers were engaged in digging up the face of the country. The owners of the gold lands in Habersham and Hall counties were many of them poor and destitute, and, with the exception of a few deposits, the most valuable tracts were sold to speculators. Many of these have frequently changed owners at increased prices, and four companies have regularly commenced mining operations.40

Silver and its ores are not of frequent or extensive occurrence in the United States. Doctor Dana states the curious fact, that a mass three or four inches in diameter, composed principally of native silver in filaments, was found on the top of a wall near Portsmouth, New Hampshire; the surrounding hills are chiefly greenstone. Mercury, which has been found native in Kentucky, occurs more plentifully as a sulphuret in Ohio and the Michigan territory, more particularly on the shores of lakes Michigan, Huron, St.Clair, Detroit river, and Lake Erie, to the mouth of Vermilion river. It occurs in the soil in the form of a black and red sand, but is usually more abundant in banks of fine ferruginous clay. Near the mouth of Vermilion river, it is in the form of a very fine powder, or in grains and small masses, disseminated in clay. It yields by distillation about sixty per cent. of mercury.

Copper, in various forms, is found in the United States, but the ores do not appear to be brought into use. It is not found on the shores of Lake Superior so abundantly as was anticipated; but many specimens of copper ore have been found at different points in the Mississippi valley. Specimens of pure and malleable copper have been obtained; one of which, said to have been found in Illinois, weighed three pounds. Iron ores are abundant in the United States. Those hitherto worked are chiefly the magnetic oxide, brown hematite, and the argillaceous oxide, particularly bog ore. The more important ores are the following, viz.: in New Hampshire, the magnetic oxide; in Vermont, brown hematite and bog ore; in Massachusetts, bog ore; in Rhode Island, brown hematite; in Connecticut, brown hematite and bog ore; in New York, the magnetic, specular, and argillaceous oxides; in New Jersey, the magnetic and argillaceous oxides; in Pennsylvania, and the states south and west, the magnetic oxide, brown hematite, and the argillaceous oxide.

To these may now be added the carbonate of iron, which has recently been successfully smelted, and which produces iron having the carbonaceous impregnation of steel, whence it has been called steel ore. In New York, New Jersey and Pennsylvania, the ore is found in abundance, and of a quality not exceeded in Sweden. The Connecticut and Virginia iron is highly esteemed.

Ores of lead are extensively found in the territories; and in Ohio it is said to have been met with native, forming slips, or slender prismatic masses, in crystallized galena. This mineral is found in various places, from the Arkansas river to the North-West territory, the precise line of the Ozark and Shawnee Mountains, a tract which seems to constitute one of the most important and extensive deposits of lead hitherto known. On the Arkansas, the ore is smelted by the Osage Indians for bullets. To the northward, some valuable mines at Prairie du Chien are imperfectly worked by the proprietors of the soil. But the most important mines are those of Cape Girardeau district, commonly known as the lead mines of Missouri. The mining district is situated between two prominent ridges of sandstone which bound the valley of Grand river, or the basin of Potosi. These ridges diverge in their course northward, and are intercepted by the Merameg, which receives the waters of Grand river, and forms a boundary to the mining district in that direction.

In Illinois are the richest lead mines in the world. The district which furnishes the ore, lies in the north-west part, and extends beyond the limits of the state. It comprises a tract of above two hundred miles in extent. The ore is inexhaustible. It lies in beds or horizontal strata, varying in thickness from one inch to several feet. It yields seventy-five per cent. of pure lead. For many years the Indians and hunters were accustomed to dig for the metal; they never penetrated much below the surface, but obtained great quantities of the ore, which they sold to the traders. The public attention was drawn to this quarter, and, from 1826 to 1828, the country was filled with miners, smelters, merchants, speculators, and adventurers. Vast quantities of lead were manufactured; the business was overdone, and the markets nearly destroyed. At present, the business is reviving, and in 1830, there were eight million three hundred and twenty-three thousand nine hundred and ninety-eight pounds of lead made at the mines. The whole quantity obtained, from 1821 to 1830, was forty million eighty-eight thousand eight hundred and sixty pounds. The principal mines are in the neighborhood of Galena.

Coal is found in the United States in great quantities, though the abundance of wood has hitherto impeded the working of the mines to their full capability. The coal found at different localities has been classed by Professor Eaton under the following heads: first, the genuine anthracite, or glance coal, found in the transition argillite, as at Worcester in Massachusetts, and Newport in Rhode Island; also in small quantities in the north and south range of argillites along the bed and banks of the river Hudson. Second, coal destitute of bitumen, usually called anthracite, but differing greatly in its character from the anthracite found in argillite. It may be called anasphaltic coal. This is embraced in slate rock, being the lowest of the lower series of secondary rocks. This coal formation is equivalent to the great coal measures of Europe. The principal localities of this coal are in the state of Pennsylvania; as at Carbondale, Lehigh, Lackawanna, and Wilkesbarre. Third, the proper bituminous coal, as at Tioga and Lyocoming. This coal is embraced in a slate rock, which is the lowest of the series of upper secondary rocks. The fourth formation is the lignite coal, which is found in a very extensive stratum in the state of New Jersey, along the south shore of the Bay of Amboy.

The anthracite of Pennsylvania is found in the Wyoming and Lackawanna valley, situated between the Blue Ridge and the Susquehanna. The coal district is chiefly occupied by mountains which run parallel to the Blue Ridge, and are fifteen hundred feet high. But little of this surface, with the exception of a few narrow valleys, invites cultivation. These mountains are mostly in a wild state, and offer a secure retreat to cougars, wolves, bears, and other animals.

The rocks of the above described region are of a transition class, and present little diversity. Gray wacke slate occurs in abundance, loose on the surface and in ledges. It is sometimes based on old red sand-stone, and surmounted by unstratified rock, and aggregate of quartz, pebbles of various dimensions, with a cement principally silicious. In the Blue Ridge, in addition to the above described rock, a silicious gray wacke, resembling fine grained granular quartz, is common. It appears in some places massive, but is often slaty. Its cement is chiefly silicious; some alumine, however, is indicated in its composition.

The beds and veins of anthracite range from north-east to south-west, and may often be traced for a considerable distance by the compass. The veins have the inclination of the adjacent strata of gray wacke, with which they often alternate, usually between twenty and forty-five degrees. In a few places they are horizontal and vertical. The beds and veins of anthracite have narrow strata of dark colored, fine grained, argillaceous schist, for the roof and floor. This slate generally contains sulphuret of iron, and disintegrates on exposure to the air. The sulphates of iron and alumine are often observed in the schist, and it frequently presents impressions of plants and sometimes of marine shells. Impure pulverulent coal is usually connected with this slate, and is said to be a good material for printers’ ink.

Anthracite has been found in the greatest quantity in sections of coal regions most accessible by water. Extensive beds and veins range from the Lehigh to the Susquehanna, crossing the head-waters of the Schuylkill and Swatara, about ten miles north-west of Blue Ridge, and it abounds contiguous to the Susquehanna and Lackawanna. But in no part of the district does anthracite occur in such apparently inexhaustible beds, or is so abundantly raised, as in the vicinity of Mauch Chunk, a village situated on the Lehigh, thirty-five miles from Easton, and one hundred and eight by water from Philadelphia.

The coal is there excavated on the flat summit of a mountain that rises nearly fifteen hundred feet above the ocean. It is of good quality, and presents beds of unparalleled extent; is disclosed for several miles on the summit, wherever excavations have been made, and is indicated in many places by coal slate in a pulverulent state, on the surface. The mountain rises with a steep acclivity, particularly on the north-west side, and when penetrated at various altitudes, discloses coal at about the same distance from the surface. Strata of grey wacke slate, containing mica, sometimes rest on the coal, parallel with the mountain side. In the deep excavations made on the summit, no termination of the coal bed has been found, and it is not improbable that the anthracite forms the nucleus of the mountain for a considerable distance.

This coal mountain range is described as extending in a south-west direction to the Susquehanna. To the north-east, beyond the Lehigh, it is connected with the Broad Mountain, the first considerable elevation west of the Blue Ridge. The Lehigh from Mauch Chunk to the water gap, eleven miles, winds between rocky mountains, with a brisk current, but presents no falls. The road usually runs near the stream, and sometimes at a considerable elevation above, on the side of the steep mountain. In its passage through the Kittetany, or Blue Ridge, the river has a tranquil but slightly inclined course. On the adjacent elevation, yellow pine, hemlock, and spruce, are interspersed with deciduous trees. From the water gap to the Delaware, the river pursues its course in a deep ravine, seldom with alluvial borders of much extent. In this district of country, the soil generally rests on limestone sinks, indicating caves; and fissures in the rocks are often observed, that must, in some places, render canalling difficult. From the confluence of the Lehigh with the Delaware to tide-water, the descent is one hundred and fifty feet.

The village of Mauch Chunk is situated on the western bank of the Lehigh, in a deep romantic ravine, between rocky mountains that rise in some parts precipitously to eight hundred or one thousand feet above the stream. Space was procured for dwellings, by breaking down the adjacent rocks and filling up a part of the ravine of Mauch Chunk Creek. Aportion of this stream has been transferred to an elevated railway, and is used to propel a grist-mill. Within a few years the Lehigh Company have erected, and are proprietors of, a large number of dwellings and buildings of every description, including a spacious hotel, a store, furnaces, grist-mills, and several saw-mills: about eight hundred men are employed by the company.41

Next to Mauch Chunk, Mount Carbon, or Pottsville, as it is now called, situated at the head of the Schuylkill canal, has been the principal source of the supply of anthracite. Many large veins are worked within three miles of the landing; and some have been opened seven miles to the north-east; in the direction of the Lehigh beds.

On almost every eminence adjacent to Pottsville, indications of coal are disclosed. The veins generally run in a north-east direction, with an inclination of about forty-five degrees, and are from three to nine feet in thickness; commencing at or near the surface they penetrate to an unknown depth, and can often be traced on hills for a considerable distance, by sounding in a north-east or south-west direction. Some veins have been wrought to the depth of two hundred feet without the necessity of draining; the inclined slate roof shielding them from water.

Where the ground admits, it is considered the best mode of working veins, to commence at the back of a coal eminence, or as low as possible, and work up, filling the excavation with slate and fine coal, leaving a horizontal passage for the coal barrows. Asection of a wide vein near Pottsville, has been wrought by this mode several hundred feet into the hill. The same vein is explored from parts of the summit by vertical and inclined shafts. The coal and slate handled, are raised by horse-power, in wagons by a rail-way that has the inclination of the vein. Veins of coal alternate with gray wacke slate in the hill. Vegetable impression sometimes occur in the argillaceous schist that forms the roof of the Pottsville coal veins.

The western part of Pennsylvania is abundantly supplied with bituminous coal, as the eastern is with anthracite. It is found on the rivers Conemaugh, Alleghany, and Monongahela, and in numerous places to the west of the Alleghany ridge, which is generally its eastern boundary; it occurs on this mountain at a considerable elevation, and elsewhere, in nearly a horizontal position, alternating with gray sand-stone that is often micaceous and bordered by argillaceous schist. The veins are generally narrow, rarely over six feet in width. This mineral is abundant and of good quality near Pittsburg, where it is valuable for their extensive manufactures. Beds of bituminous coal are reported as occurring in Bedford county, in the north-west part of Luzerne, and in Bradford county. In the last county, nine miles from the Susquehanna, there is an extensive bed of coal, regarded as bituminous. It has been penetrated thirty feet without fathoming the depth of the strata.

Bituminous coal is abundant in Tioga county, state of New York. The summit level is forty-four feet above the river, and upwards of four hundred above the lake. It occurs on the Tioga, and on the Chemung, a branch of that river. Bituminous coal exists on the numerous streams that descend the western side of the extensive peninsula, situated between the north and west branches of the Susquehanna.

The appearance of the Tioga, or bituminous coal, differs but little from the best Liverpool or Newcastle coal. Its color is velvet black, with a slight resinous lustre, its structure is slaty or foliated, and its layers as in the best English coal, divided in prismatic solids, with bases slightly rhomboidal; it is easily frangible, and slightly soils the finger. It burns with a bright flame and considerable smoke, with a slight bituminous smell, a sort of ebullition taking place, and, as the heat increases, an appearance of semi-fusion leaving a slight residue or scoria.

Graphite or plumbago, commonly but improperly called black lead, occurs extensively in primitive and transition rocks; from that which is obtained in New York, excellent pencils have been made. There are also numerous localities of petroleum, or mineral oil. It usually floats on the surface of springs, which in many cases are known to be in the vicinity of coal. It is sometimes called Seneca or Gennessee oil. In Kentucky, it occurs on a spring of water in a state sufficiently liquid to burn in a lamp; it is collected in considerable quantities.

Salt appears to be abundant in the United States, but it has not been found in the mass. It is principally obtained from the springs which have been noticed in another part of the work. Professor Eaton has suggested doubts whether masses of salt really exist. He conceives that an apparatus for the spontaneous manufacture of salt may be found within the bosom of the earth, in those rocks which contain the necessary elements, and in this opinion he is supported by experiment. Subsequently, however, Mr.Eaton had reason to think that salt has existed in a solid state in cubical crystals, the hollow forms of which he discovered abundantly in the lias and saline rocks of the west, and it seems still to be highly probable that masses of salt exist in the neighborhood of the salt springs. The brine contains, besides the muriate of soda, a considerable proportion of muriate of lime and magnesia. Recently, also, bromine has been detected in the brine of salina, by Dr.Silliman. Saltpetre is abundant in the west, being found in numberless caves along the Missouri; and the shores of the Arkansas are almost covered with nitre. The testimony of Mr.Schoolcraft, in relation to the recent formation of quartz crystals, is very striking. They have been found, it appears, upon the handle of a spade, and the edge of some old shoes, which had been left for some years in an abandoned lead mine of the Shawnee Mountains. Crystals of great beauty and dimensions have been found in numerous localities. Many minerals which are rare in Europe, are found abundantly, and often in finer forms, in the United States; some, which have subsequently been detected elsewhere, were first discovered here, and not a few may still be claimed as the peculiar treasure of our country.