The scarcecopper (Lycaena virgaureae) is a butterfly of the family Lycaenidae (copper or gossamer-winged butterflies). The lower surfaces of the back...
Before the New Kingdom, evidence is scarce as to which copper source was being used, but it is believed to have been copper ores. During the New Kingdom, evidence...
Copper zinc tin sulfide (CZTS) is a quaternary semiconducting compound which has received increasing interest since the late 2000s for applications in...
being higher than content value currently occur for bullion coins made of copper, silver, or gold (and rarely other metals, such as platinum or palladium)...
in China was largely limited to imported foreign coins, used alongside copper cash coins and the sycee silver ingot currency. Large-scale domestic production...
navigation but from the growth of copper mining in northern Chile. As wood in northern Chile became increasingly scarcecopper smelters recurred to the coals...
majority of the coins were struck in silver, but there is an exceedingly scarce variety of the coin struck in gold. On October 29, 2020, one of the gold...
The large copper (Lycaena dispar) is a butterfly of the family Lycaenidae. L. dispar has been commonly arranged into three subspecies: L. dispar dispar...
country's position as the world's leading producer of diamond by value. Copper, gold, nickel, coal and soda ash production also has held significant, though...
Protaetia cuprea, also known as the copper chafer, is a species of chafer in the family Scarabaeidae. This species is also known as the rose chafer, and...
part of the Bronze Age if it either produced bronze by smelting its own copper and alloying it with tin, arsenic, or other metals, or traded other items...
uptake of copper, producing copper deficiency. Molybdenum prevents plasma proteins from binding to copper, and it also increases the amount of copper that...
wood remains found in sockets of copper artifacts indicates that they are at least 6500 years old. In Prehistoric Copper Mining in the Lake Superior Region...
there is no resource crisis is that as a particular resource becomes more scarce, its price rises. This price rise creates an incentive for people to discover...
in the ore grade needed. The average grade of the copper ore processed has dropped from 4.0% copper in 1900 to 1.63% in 1920, 1.20% in 1940, 0.73% in...
(Ca2Cu2Si3O8(OH)4 or Ca2Cu2Si3O10 · 2 H2O) is a light blue copper silicate mineral. It is somewhat scarce. It has a monoclinic crystal system, vitreous luster...