The St. Johns herald., 1893-07-20
AriZOna'S Mineral Exhibit.

to the mineral building one day
 Do people go to the mines to seel
 fortunes or to search for the beauti
 ful? I found wonderful collection
 of copper ores. It was a satisfae
 tion, after I had gone into ecstacies
 over it, to find that it is the finest ever gathered together. One reason may be that it was not gathered in a cabinet way, here a bit and there a bit, but are working specimens taken directly from the richest mines any where. These, Arizona may rightfully claim. Her mine owners have given generously and T. R. Sorin, the executive agent, has arranged the display in most at- tractive form. His perfect familiar ity with minerals and every process of securing them, is a very great advantage to the many visitors to the Arizona exhibit. Each case is further opened to the general pub lie by explicit labels. Various pho- tographs are of service in showing mines, and the very ingenious mod els set forth the Hay of the land," the extent to which mining has been carried and the excavations at the different levels. The amount of wood work used in the mines is shown in another of the models, These refer to the Copper Queen mine.
 The central object of interest is a shaft of copper ore, thirty-fve per cent assay, that is nine feet in it's height, the apex of the shaft being three feet in height. The weight is 5,765 pounds. It is partly manga nese, but shows azurite on it's sur face in brilliant striplngs. The mall achite forms soberer back ground. The upper portion is largely azu- rite. No one passes the Arizona exhibit without an exclamation of wonder at the great block in the central glass cass. The advantage of the case is obvious. Labels are not misplaced and the whole exhib- it is kept in a perfectly neat con- dition, The beauty of the speci-. mems is not diminished by dust as it would otherwise be.
 The first case as one enters, con- tains specimens of sulphide ore producing fifty per cent copper. The working grade samples show what the copper mines are doing. Be- side great bars of the pure metal the Copper Queen shows bars of copper 97 fine, that at the same time yield 87 ounces of silver and one and seventy-three hundredths ozs. of gold to the ton. The we'll ar- carefully labeled working specimens attract mining men, in- yestors and many otheas who hang lovingly round the cases. Every body, however, stops to exclaim at the brilliance of the copper ores, malachite with it's bright emerald shade, cuprite that could be passed for masses of garnets, azurite bluer than any sea or sky, and sometimes in spar form, at others combined | with malachite. The latter is found | resembling coarse moss, but the i rarest and loveliest of it's forms is that so like green velvet that one wants to touch and see. Luckily | the fingers are warded off from this l delicate forma, that has been found l in so few places in the world that | Arizona may claim to stand alone in producing it. Formed by infil- tration in hollow pockets in carbo- nate, it's delicacy is frequently made more beautiful by a frosting of sil- yer. Next in beauty is the fbrous red oxide copper or calchotracite, VI ich shows a red surface that