Calamine (mineral) crystallographically quite distinct, the two minerals exhibit similar massive or botryoidal external form and are not readily distinguished without detailed chemical or physical analysis. The first person to separate the minerals was the British chemist and mineralogist James Smithson in 1803. In the mining industry the term calamine has been historically used to refer to both minerals indiscriminately. In mineralogy calamine is no longer considered a valid term. It has been replaced by smithsonite and hemimorphite in order to distinguish it from the pinkish mixture of zinc oxide (ZnO) and iron(III) oxide (FeO) used in calamine lotion. In the 16th
The Big Ore The Big Ore The Big Ore () is a 1964 drama film directed by Vasily Ordynsky and based on the novel by Georgi Vladimov. Viktor Pronin (Yevgeni Urbansky) returned from the army to the bride (Svetlana Zhgun), and she – the other. Then Victor went to "great" Kursk ore, where the work is in full swing – all live in anticipation of the first car of ore. To check Pronyakin, Brigadier (Vsevolod Sanaev) gives him beaten MAZ: mend – a long time came. The guy got in the "hostel" to repair the car and began to put one after the