Search results
Results from the WOW.Com Content Network
Zinkenite is a steel-gray metallic sulfosalt mineral composed of lead antimony sulfide Pb 9 Sb 22 S 42.Zinkenite occurs as acicular needle-like crystals. [2]It was first described in 1826 for an occurrence in the Harz Mountains, Saxony-Anhalt, Germany and named after its discoverer, German mineralogist and mining geologist, Johann Karl Ludwig Zinken (1790–1862).
The price of an expansion pack is usually much less than that of the original game. As expansion packs consist solely of additional content, most require the original game in order to play. Games with many expansions often begin selling the original game with prior expansions, such as The Sims Deluxe Edition (The Sims with The Sims: Livin ...
Shimmering behaviour of Apis dorsata (giant honeybees). A group of animals fleeing from a predator shows the nature of herd behavior, for example in 1971, in the oft-cited article "Geometry for the Selfish Herd", evolutionary biologist W. D. Hamilton asserted that each individual group member reduces the danger to itself by moving as close as possible to the center of the fleeing group.
Zincite is the mineral form of zinc oxide (Zn O).Its crystal form is rare in nature; a notable exception to this is at the Franklin and Sterling Hill Mines in New Jersey, an area also famed for its many fluorescent minerals.
A data pack (or fact pack) is a pre-made database that can be fed to a software, such as software agents, game, Internet bots or chatterbots, to teach information and facts, which it can later look up. [1] In other words, a data pack can be used to feed minor updates into a system. [2]
Boulangerite or antimonbleiblende is an uncommon monoclinic orthorhombic sulfosalt mineral, lead antimony sulfide, formula Pb 5 Sb 4 S 11. [2] It was named in 1837 in honor of French mining engineer Charles Boulanger (1810–1849), [3] and had been a valid species since pre-IMA.
Mineral resource estimation is used to determine and define the ore tonnage and grade of a geological deposit, from the developed block model. There are different estimation methods used for different scenarios dependent upon the ore boundaries, geological deposit geometry, grade variability and the amount of time and money available.
Production of brass: the zinc is alloyed with copper in ratios of 20%–40% zinc. [11] 20% Production of zinc alloys: the zinc is combined with varying proportions of aluminium and magnesium. [11] 15% Various other industries, as an agricultural fertilizer and as a human food supplement. [11] 15%