Gratonite (M684)
Peru
 
        
        
      
           
        
        
      
    LOCATION
Excelsior Mine, Cerro de Pasco, Pasco province, Pasco, Peru
SIZE
29 x 22 x 19 mm
DESCRIPTION
Gratonite is considered a low-temperature dimorph of jordanite, the inversion occurring on heating below 250°C.It is a very rare mineral, discovered in only 4 countries worldwide: Japan, Germany, Spain and - the best ones - from Peru. Here we have a wonderful and very aesthetic huge cluster in finest quality. Undamaged.
 
                        