Muri Spring (, ) is a

chalybeate Chalybeate () waters, also known as Iron oxide, ferruginous waters, are mineral spring waters containing salts of iron. Name The word ''chalybeate'' is derived from the Latin word for steel, , which follows from the Ancient Greek, Greek word ...

mineral spring Mineral springs are naturally occurring springs that produce hard water, water that contains dissolved minerals. Salts, sulfur compounds, and gases are among the substances that can be dissolved in the spring water during its passage un ...

on the Austrian side of the Austria-Slovenia border, on the slope of a hill named Goli Vrh. The spring is next to the main road leading from Jezersko towards the village of

Bad Vellach Bad or BAD may refer to: Common meanings *Evil, the opposite of moral good * Erroneous, inaccurate or incorrect * Unhealthy, or counter to well-being *Antagonist, the threat or obstacle of moral good Acronyms * BAD-2, a Soviet armored trolley ...

. The water arises from

Paleozoic The Paleozoic ( , , ; or Palaeozoic) Era is the first of three Era (geology), geological eras of the Phanerozoic Eon. Beginning 538.8 million years ago (Ma), it succeeds the Neoproterozoic (the last era of the Proterozoic Eon) and ends 251.9 Ma a ...

schists Schist ( ) is a medium-grained metamorphic rock generally derived from fine-grained sedimentary rock, like shale. It shows pronounced ''schistosity'' (named for the rock). This means that the rock is composed of mineral grains easily seen with a ...

, which contain a high concentration of iron minerals. Due to the high mineral content, the water leaves a marked trace. During the rain, the fallen water runs underground and mixes with

carbon dioxide Carbon dioxide is a chemical compound with the chemical formula . It is made up of molecules that each have one carbon atom covalent bond, covalently double bonded to two oxygen atoms. It is found in a gas state at room temperature and at norma ...

, which emerges from deeper parts of the

Earth's crust Earth's crust is its thick outer shell of rock, referring to less than one percent of the planet's radius and volume. It is the top component of the lithosphere, a solidified division of Earth's layers that includes the crust and the upper ...

. Such water dissolves iron minerals present in the rock of this area. The source disappears during drought and low rain.

References

External links

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Uroš Grabnar, Ognjeno rdeča voda...
Springs of Austria Völkermarkt District Landforms of Carinthia {{Carinthia-geo-stub