Cleveite (original) (raw)

About CleveiteHide

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Name:

In honour of Per Teodor Cleve (10 February 1840, Stockholm, Sweden - 18 June 1905, Uppsala, Sweden) - Swedish chemist, biologist, mineralogist, and oceanographer. He is best known for his discovery of the chemical elements holmium and thulium. Cleve earned his BSc and PhD from Uppsala University in 1863 and 1868, respectively. After receiving his PhD, he became an assistant professor of chemistry at the university. He later became professor of general and agricultural chemistry. In 1874, he theorised that didymium was in fact two elements; this theory was confirmed in 1885 when Carl Auer von Welsbach discovered neodymium and praseodymium.

In 1879 Cleve discovered holmium and thulium. His other contributions to chemistry include the discovery of aminonaphthalenesulfonic acids, also known as Cleve's acids. From 1890 on he focused on biological studies. He developed a method of determining the age and order of late glacial and postglacial deposits from the types of diatom fossils in the deposits, and wrote a seminal text in the field of oceanography.

A variety of Uraninite

A REE-and Th-bearing variety of uraninite. Presence of (Y, Ce, etc.)2O3 extends to at least 10%. Related to bröggerite.

The first portions of terrestrial Helium (He) were obtained during Cleveite dissolution in sulfuric acid (Ramsey, 23 March 1895–27 years after the discovery of He in the Sun).

First described by Nordenskiöld (1878) from the Garta feldspar quarry, Arendal, Aust-Agder, Norway.

Unique IdentifiersHide

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Mindat ID:

29957 (as Cleveite)
4102 (as Uraninite)

Long-form identifier:

mindat:1:1:29957:6 (as Cleveite)
mindat:1:1:4102:3 (as Uraninite)

fc16cb4b-0df9-491d-a699-e4a9b794a63e (as Cleveite)
f8c51085-19cc-4f1b-abd5-98bb0cfccf2b (as Uraninite)

Chemistry of CleveiteHide

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Common AssociatesHide

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Associated Minerals Based on Photo Data:

Other InformationHide

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Health Risks:

Strong radioactive.

Internet Links for CleveiteHide

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References for CleveiteHide

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Localities for CleveiteHide

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This map shows a selection of localities that have latitude and longitude coordinates recorded. Click on the symbol to view information about a locality. The symbol next to localities in the list can be used to jump to that position on the map.

Locality ListHide

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- This locality has map coordinates listed. - This locality has estimated coordinates. ⓘ - Click for references and further information on this occurrence. ? - Indicates mineral may be doubtful at this locality. - Good crystals or important locality for species. - World class for species or very significant. (TL) - Type Locality for a valid mineral species. (FRL) - First Recorded Locality for everything else (eg varieties). Struck out - Mineral was erroneously reported from this locality. Faded * - Never found at this locality but inferred to have existed at some point in the past (e.g. from pseudomorphs).

All localities listed without proper references should be considered as questionable.