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Orichalcum or aurichalcum / ˌ ɔːr ɪ ˈ k æ l k ə m / is a metal mentioned in several ancient writings, including the story of Atlantis in the Critias of Plato.Within the dialogue, Critias (460–403 BC) says that orichalcum had been considered second only to gold in value and had been found and mined in many parts of Atlantis in ancient times, but that by Critias's own time, orichalcum ...
Below is a list of European countries and dependencies by area in Europe. [1] As a continent , Europe's total geographical area is about 10 million square kilometres. [ 2 ] Transcontinental countries are ranked according to the size of their European part only, excluding Greece due to the not clearly defined boundaries of its islands between ...
The Mediterranean Sea, between Africa and Europe The Atlantic Ocean around the plate boundaries (text is in Finnish). The African and European mainlands are non-contiguous, and the delineation between these continents is thus merely a question of which islands are to be associated with which continent.
Aurichalcite is a carbonate mineral, usually found as a secondary mineral in copper and zinc deposits. Its chemical formula is (Zn,Cu) 5 (CO 3) 2 (OH) 6. The zinc to copper ratio is about 5:4. [3] Copper (Cu 2+) gives aurichalcite its green-blue colors. [5]
7,900 square kilometres (3,100 sq mi), or 19% of the surface of Switzerland, is karst, within this area lies the majority of the 7,500 currently known Swiss caves, with an accumulated passage length of more than 1,200 kilometres (750 mi).
This is an incomplete list of dolmens, a type of single-chamber megalithic tomb. 40% of the world's dolmens are found in Korea. [ 1 ] [ 2 ] Dolmens are also found in Europe, especially Northern France, Britain and Ireland.
This is a list of Asian countries and dependencies by population in Asia, total projected population from the United Nations [1] and the latest official figure. Map [ edit ]
The Shulaveri-Shomu culture of the central Transcaucasus region is one of the earliest known prehistoric culture in the area, carbon-dated to roughly 6000–4000 BC. Another early culture in the area is the Kura-Araxes culture, assigned to the period of ca. 3300–2000 BC, succeeded by the Georgian Trialeti culture (ca. 3000–1500 BC).