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Occasionally a complete ammonite shell is recovered with its structure well-preserved: fine, convoluted lines delineate the shell chambers, and the overall shape is suggestive of a nautilus. While these shells may be as large as 90 cm (35.5 inches) in diameter, the iridescent ammonites (as opposed to the pyritized variety) are typically much ...
A primary difference between ammonites and nautiloids is the siphuncle of ammonites (excepting Clymeniina) runs along the ventral periphery of the septa and camerae (i.e., the inner surface of the outer axis of the shell), while the siphuncle of nautiloids runs more or less through the center of the septa and camerae.
Industrial resources (minerals) are geological materials that are mined for their commercial value, which are not fuel (fuel minerals or mineral fuels) and are not sources of metals (metallic minerals) but are used in the industries based on their physical and/or chemical properties. [1]
Ammonite, a form of amatol, is a civil engineering explosive popular in Eastern Europe and China. Generally comprising a 20/80 mixture of TNT and ammonium nitrate it is typically used for quarrying or mining. Because the proportion of TNT is significantly lower than in its military counterpart, ammonite has much less destructive power.
With the expiry of an agreement to purchase electricity at a favorable rate from the Salt River Project, Cyprus Minerals installed an ISASMELT furnace in its copper smelter. [3] This was the first large-scale installation of the ISASMELT process, which was developed jointly by Mount Isa Mines Limited and the Australian government's Commonwealth ...
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W. A. Cobban and Hook, S. C. 1983 Mid-Cretaceous (Turonian) ammonite fauna from Fence Lake area of west-central New Mexico. Memoir 41, New Mexico Bureau of Mines&Mineral Resources, Socorro NM. W. A. Cobban and Hook, S. C. 1979, Collignoniceras woollgari wooollgari (Mantell) ammonite fauna from Upper Cretaceous of Western Interior, United States ...