Discovered
1843Density
9.1 g/cm3Melts
1529 °C
- 2784 °F
- 1802 °K
Boils
2868 °C
- 5194 °F
- 3141 °K
Contributed by collector no. 3
Dysprosium , Holmium , Erbium , and Thulium
Contributed by the site creator
Four chemical elements were named after the town of Ytterby, Sweden, where many rare-earth elements were discovered from the ores mined there. In this photo is Yttrium (large chunk), Ytterbium (in ampoule), Terbium (brassy pieces), Erbium (silvery pieces). Also included are small pieces of dull, slightly oxidized Holmium , which takes the name of Stockholm, Sweden.
Contributed by the site creator
Very shiny piece of Erbium metal. Erbium should not be confused with Terbium .
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