Shiny silver-white, medium-soft metal (Fe = ferrum), which is the fourth most common element in the earth's crust with a share of just under 5%. In the soil, it is very rarely found in pure form, but mostly in the bound form of sulphidic and oxidic iron minerals. These include magnetic ironstone, red ironstone, brown ironstone and spar ironstone. Iron is present in large quantities in many soils. The frequently occurring iron oxides give soils their characteristic reddish colour. In viticulture, such soil types are called Rotliegendes (Rotliegend) or Terra Rossa. Among others, the Australian wine-growing region of Coonawarra is characterised by such a soil type. The single vineyard Scharlachberg in the German wine-growing region of Rheinhessen also got its name because of its scarlet colour.
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Serious sources on the internet are rare - and Wine lexicon from wein.plus is one such source. When researching for my articles, I regularly consult the wein.plus encyclopaedia. There I get reliable and detailed information.
Thomas Götz
Weinberater, Weinblogger und Journalist; Schwendi