CHAPTER XIV.
GOLD-BUYING AND GOLD-MINING.
How the Gold is Found—Gold-washing—Quartz-crushing—Buying Gold from Chinamen—Alluvial Companies—Broken-down Men—Ups and Downs in Gold-mining—Visit to a Gold Mine—Gold-seeking—Diggers' Tales of lucky Finds.
I must now be excused if I talk a little "shop." Though my descriptions hitherto have, for the most part, related to up-country life, seasons, amusements, and such like, my principal concern, while living in Majorca, was with bank business and gold-buying. The ordinary business of a banking office is tolerably well known, but the business of gold-buying is a comparatively new feature, peculiar to the gold-producing districts, and is, therefore, worthy of a short description.
The gold is found and brought to us in various forms. The Majorca gold is generally alluvial, consisting of coarse gold-dust and small nuggets washed out from the gravel. There are also some quartz reef mining companies, whose gold is bought in what we call a retorted state. Let me explain. The quartz containing the gold is stamped and broken up by heavy iron hammers falling upon it; and a stream of water constantly running down into the box in which the stampers work, the soluble dirt is washed away, while the particles of quartz and gold are carried forward over boards, in which, at intervals, are small ripples containing quicksilver. The quicksilver clings to the gold and forms an amalgam with it. This is collected, taken out, and squeezed in bags of chamois leather,—by which the greater part of the quicksilver is pressed out and saved for a repetition of the process. The residue is placed in a retort, and exposed to heat, by which the remainder of the quicksilver is driven off by evaporation, leaving the gold in a solid lump. There are, however, various other processes by which the gold is separated from the quartz.
Sometimes the gold is offered for sale in a very imperfectly separated state, and then considerable judgment is required in deciding as to its value. In alluvial gold there is always a certain proportion of chips of iron, which have flown from the picks used in striking and turning up the gravel. These pieces of iron are carefully extracted by means of a magnet. The larger bits of gold, if there be any, are then taken out and put to one side. The remainder is put into a shallow tin dish, which is shaken with a peculiar turn of the wrist, and all the sand and dirt thus turned to the point of the dish. This is blown off; then up goes the gold again, and you blow and blow until all the sand is blown off. If there remain any gold with quartz still adhering to it, the particles are put into a big iron mortar and well beaten, and the process above described is repeated. The gold is then ready for weighing and buying, and there is usually no difficulty in settling the price with English diggers, the price varying according to the assay of the gold.[12]
Our great difficulty is with the Chinamen, who are very close-fisted fellows. They mostly work at sludge, which Englishmen have already washed; and they are found hanging on to the tailings of old workings, washing the refuse in order to extract the gold that had been missed. Old tailings are often thus washed several times over, and never without finding gold to a greater or less amount. When a party of Chinamen think they can do better elsewhere, they may be seen moving off, carrying their whole mining apparatus on their backs, consisting of tubs, blankets, tin scoops, and a small washing-cradle.
The Chinamen get their gold in a very rude way, though it seems to answer their purpose. They put the stuff to be washed on to their cradle, and by scooping water over it and keeping the cradle going they gradually rinse it away, the fluid running over two or three ledges of blankets, and leaving the fine gold remaining behind adhering to the wool. After the process has been continued sufficiently long, the gold-dust is collected from the blankets, and is retorted by the Chinamen themselves, and then they bring it for sale. The retorting has usually been badly done, and there remains a good deal of quicksilver and nitric acid adhering to the gold. The only way of dealing with it is to put the whole into a crucible, then make it red hot, and keep the gold at the melting-point for five or ten minutes.
As we have got no furnace of our own on the premises, I have frequently to march up the street to the blacksmith's shop, to put John Chinaman's gold to the test. If John is allowed to go by himself, he merely waits till the gold gets warm, takes it out again, and brings it back, saying, "All light; welly good, welly good gole; no gammon." But you should see John when I go up to the blacksmith's myself, put the crucible into the hottest part of the fire, and begin to blow the bellows! When the gold begins to glow with heat, and he knows the weight is diminishing by the quicksilver and dirt that are flying off, he cries, "Welly hot! too muchee fire; me losem too muchee money!" But the thing must be done, and John must take the choice of his dirty gold or the regular price for it when cleaned. I have known it lose, by this process of purifying, as much as from five to six pennyweights in the ounce.