• Gratonite
  • Gratonite
Sulphides, Sulphosalts and Arsenides


$2,500.00   €2,444  £2,080.00 approx.  

This specimen is priced in US dollars, all other prices are approximate.

ID: CC21114
This specimen provides a great opportunity to acquire an exceptionally rare species from a world-famous yet seldom seen locality, the Rio Tinto mine in Andalusia, Spain. An excellent crystallised specimen of the lead-arsenic sulphosalt Gratonite, ex-matrix and a complete mixture of perfect, sharply defined Gratonite crystals intermixed with granular Gratonite. The trigonal crystals attain at least 5 mm tall and line the vuggy interior and external faces of this highly porous small miniature (or large thumbnail). The Gratonite is a sooty dark grey to black with a dull to metallic lustre. It is great to see a specimen from the Rio Tinto mines, a locality I visited over forty years ago and have fond memories of. This rare sulphosalt is from the Dr Josef Clemente Collection of southern Germany and comes with a ‘Museo Mineralogico of Madrid’ label.


3.0 × 3.7 × 2.8 cm
Rare Minerals, Sulphides, Sulphosalts and Arsenides
Rio Tinto Mine, Minas de Riotinto, Huelva, Andalusia, Spain

Minerals on Specimen

Minerals on specimen

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