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Updated: June 26, 2025
The loss of mercury usually occurring in amalgamation work is principally caused by its mineralisation, and sodium has such an intense affinity for oxygen and sulphur, that it reduces the mercury to its metallic form again, and prevents its being carried off in light mineralised flakes and powder. SECTION ACROSS SAN ANTONIO LODE. A, Lode. B, Decomposed doleryte. C, Surface soil.
Now, what a profusion of this species of fossil wood is to be found in the cabinets of collectors, and even in the hands of lapidaries, and such artificers of polished stones! In some places, it would seem to be as common as the agate. I shall only mention a specimen in my own collection. It is wood petrified with calcareous earth, and mineralised with pyrites.
I always, said they was mineralised enough to make a good prospect." This was unsatisfactory. Senor Johnson grew more restless. His critical eye began to take account of small details. At the ranch house one evening he, on a sudden, bellowed loudly for Sang, the Chinese servant. "Look at these!" he roared, when Sang appeared. Sang's eyes opened in bewilderment.
The marine objects are mineralised; consequently, they have proceeded from the decomposition of the solid strata; and, having been travelled in the running water of the surface of the earth, they must have been deposited in those beds of rivers, which now are dry, alongst with the bones, or the entire bodies of terrestrial animals, the remains of which are now found there.
We have an example of this in our turf pits or peat mosses; when this vegetable substance has been compressed under a great load of earth, which sometimes happens, it is much consolidated, and hardens, by drying, into a black body, not afterwards dilutable or penetrated by water, and almost undistinguishable in burning from mineralised bodies of the same kind.
He found that in the period of a few weeks, or sometimes even days, the organic bodies thus immersed were mineralised to a certain extent.
The other metals are all found more or less mineralised, though some of them but rarely in the native state.
Mineralised wood, therefore, is the object now inquired after; that wood which had been lodged in the bottom of the sea, and there composed part of a stratum, which hitherto we have considered as only formed of the materials proper to the ocean.
The first of these is found naturally combined with almost all metallic substances, which are then said to be mineralised with sulphur. Now, it is well known, that this mineralising operation is performed by means of heat or fusion; and there is no person skilled in chemistry that will pretend to say, this may be done by aqueous solution.
"No, sir; but it wants electricity to make it move, and the wherewithal to make the electricity sodium to feed the elements, coal from which to get the sodium, and a coal-mine to supply the coal. And exactly on this spot the sea covers entire forests embedded during the geological periods, now mineralised and transformed into coal; for me they are an inexhaustible mine."
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