─────╥────────┬───────┬────────┬───────┬──────────── From ║ United │Russia.│Germany.│Serbia.│Switzerland. Year.║Kingdom.│ │ │ │ ─────╫────────┼───────┼────────┼───────┼──────────── 1910 ║ 480│ 5,878│ 1,104│ 204│ 85 1911 ║ 575│ 6,895│ 822│ 782│ 127 1912 ║ │ 5,454│ 283│ 144│ 1913 ║ 78│ 4,500│ 220│ │ 2 1914 ║ 63│ 2,595│ 161│ │ ─────╫────────┼───────┼────────┼───────┼──────────── 1915 ║ │ │ No│details│available 1916 ║ │ │ │ │ 1917 ║ │ │ │ │ 1918 ║ │ │ │ │ ─────╨────────┴───────┴────────┴───────┴──────────── ─────╥────────────────┬──────────╥────── From ║Austria-Hungary.│ Other ║Total. Year.║ │countries.║ ─────╫────────────────┼──────────╫────── 1910 ║ │ 44║ 7,795 1911 ║ │ 192║ 9,393 1912 ║ 271│ 84║ 6,235 1913 ║ 171│ 97║ 5,067 1914 ║ │ 102║ 2,921 ─────╫────────────────┼──────────╫────── 1915 ║ No details│available ║ 188 1916 ║ │ ║ 578 1917 ║ │ ║ 578 1918 ║ │ ║ 41 ─────╨────────────────┴──────────╨────── GERMANY Platinum has recently been discovered in Westphalia, deposits having been found in Freudenberg, Siegen, Meschede, in Siegerland, Sauerland and Westerwald. It occurs in a series of fragmental deposits, including principally slates and graywackes, the latter composed of quartz and slate, with an argillaceous cement; it is also occasionally found in the recemented fragments which are presumably derived from the basal granite formation, underlying the platinum series[46] p. 606. The beds are believed to be of marine origin, and are probably of Silurian and Devonian age. The platinum, which is present in a very finely-disseminated state, is associated with chromium, nickel, arsenic, antimony, iron, copper, lead, zinc, silver and gold, some of which appear to have been introduced by solutions at a stage subsequent to sedimentation. Krusch investigated these deposits in 1914, and is of opinion, in view of the similarity of the chemical associations with those of the Ural and British Columbian formations, that the original source of the platinum was peridotite, or other form of basic igneous rock. A number of samples, analysed by Krusch, yielded values ranging from a trace to 33·5 gm. (1 oz. troy) platinum per ton[47]. At the outbreak of war the capital necessary for exploitation had not been raised, but in 1918 it was stated that treatment works had been erected at Wenden[2].