Titlebook: Gold; History and Genesis Robert W. Boyle Book 1987 Van Nostrand Reinhold 1987 economic geology.geology.mining.reef

命令變成大炮

Nebulous

,Gold During the Pre-Classical (Primitive) Period (5000 B.C.–600 B.C.),ly attracted by its intrinsic beauty, great maleability, and virtual indestructibility. As tribal development progressed through the Paleolithic, Mesolithic, and Neolithic ages, and as people congregated into civilized centers, the metal appears to have taken on a sacred quality because of its endur

墻壁

cauda-equina

MUMP

Gold During the Renaissance,ent of Humanism, a revolution in art, sculpture, and letters but with relatively little progress in natural science, and during much of the sixteenth century by the Reformation led by the son of a miner, Martin Luther (1483–1546). The Humanists devoted themselves to the study of the language, litera

打火石

Gold During the Transition to Modern Scientific Views,nto the early years of the nineteenth century, marks a time span of nearly three centuries, during which many changes took place in politics, social structure, economics, and science in Europe and the newly discovered (i.e., by Europeans) lands of the New World (Americas), Africa, the Far East, Sibe

magenta

Odyssey

Geochemistry of Gold,eam sands. With the onset of civilization and the congregation of early man into urban communities some unknown worker in gold (the first metallurgist) discovered that gold nuggets were variable in composition and could be purified by fire employing a cementation process using common salt. After fir

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,The Origin of Epigenetic Gold Deposits—the Ore-Magma Theory, postulated by the midnineteenth century: the ore-magma theory involving siliceous melts, the magmatic-hydrothermal theory, secretion theories, and abyssal theories. The ultimate source of the gold, other metals, and gangue elements (minerals) in gold deposits is mentioned only briefly in these earl

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