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Updated: September 12, 2025
The well-known Verde antico is not a marble, but a mixture of the green precious serpentine of mineralogists and white granular limestone. It may also be called a breccia, for it is composed of black fragments, larger or smaller, derived from other rocks, whose angular shape indicates that they have not travelled far from the spots where they occur.
Now Dave, the duck-decoy-man of the fens, knew nothing about lines of fracture or bulbs of percussion as taught by mineralogists, but he knew exactly where to hit that piece of flint so as to cause a nice sharp-edged flake to fly off, and he knew how and where to hit that flake so as to chip it into a neat oblong, ready for his gun, those present being ignorant of the fact that they were watching workmanship such as was in vogue among the men who lived and hunted in England in the far-distant ages of which we have no history but what they have left us in these works.
Thiselton Dyer has rendered a great service, not only to botanists, but also to physicists and mineralogists, by recalling attention to the very interesting substance known as "tabasheer."
Maybe I try to take advantage of you and show you what dey call fools gold what mineralogists call pyrites of iron? No? It aindt dat? Vell, let me ask you vun question den am I righd or am I wrong?" "You're right, old man," returned Denver eagerly as he held a specimen to the light; and when he looked up Bunker Hill was gone.
Moreover, he had sent to several jewelers and mineralogists some of the smaller fragments which he had picked up in the cave of light, and these specialists, while reporting the material of the specimens purest diamond, expressed the greatest surprise at their shape and brilliancy.
This idea had for a long time occupied the mind of a person highly distinguished for his talents and reputation at Quito, who, unacquainted with the labours of the mineralogists of Europe, had devoted himself to researches on the volcanoes of his country.
But, let not geologists judge my theory by their imperfect notions of nature, or by those narrow views which they take of the present state of things; let not mineralogists condemn my theory, for no other reason but because it does not correspond with their false principles, and those gratuitous suppositions by which they had been pleased to explain to themselves every thing before.
The most valuable mineral is sulphur, the supply of which appears to be inexhaustible. The chief exports are wool, oil, fish, horses, eider-down, knit goods, sulphur, and Iceland moss. Transparent calcite, a mineral commonly called "Iceland spar," is found, one mine of which furnishes an excellent quality. It is highly prized by mineralogists on account of its double refractive qualities.
The chemists sought it in their laboratories and the mineralogists in the mountains and deserts. Platinum might have served, but it, too, had become a drug in the market through the discovery of immense deposits. Out of the twenty odd elements which had been rarer and more valuable than gold, such as uranium, gallium, etc., not one was found to answer the purpose.
Respecting the slates of Blattenberg, in the canton of Glaris which some mineralogists, because of their numerous impressions of fish, have long mistaken for the cupreous slates of Mansfeld, they belong, according to M. von Buch, to a real transition formation.
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