Add to favourites

On stock 118 pcs

Nature Protection: Slovak Minerals - Euchroite Issue number
670
Date of issue
12.10.2018
Face value
1.65 €
Sell price
1.65 €

Euchroite Cu2(AsO4)(OH)•3H2O is among the most beautiful Slovak secondary minerals. Its name was derived from the Greek word euchros, meaning beautifully coloured. Euchroite was first described in 1823 by J. F. August Breithaupt (1791 – 1873), a professor of mineralogy at the Freiberg Mining Academy, however, this came from the world-renowned deposit at Svätodušná. Euchroite is a supergene mineral that crystallises as an orthorhombic crystal. It is copper arsenate that forms isometric, tabular, short-prism crystals of mostly emerald green or, less frequently, a blue-green colour. It is normally transparent with a glassy gloss; however, typically some crystals, such as isomeric crystals...

Show more

Similar products

  • Page of 22
Nature Protection: Slovak Minerals - Precious Opal from Dubnik Issue number
548
Date of issue
11.10.2013
Nature Protection: Low Tatras National Park - Saxifraga mutata Issue number
524
Date of issue
12.10.2012
Nature Conservation: Great Bustard Issue number
505
Date of issue
14.10.2011
Nature Protection: Muránska Plain - Daphne Arbuscula Issue number
482
Date of issue
15.10.2010
Preservation of Nature: Fire Salamander Issue number
462
Date of issue
23.10.2009
  • Page of 22