General Stock  Page 5 

Minerals Beginning with   "D"

JC12766.  Descloizite.  Berg Aukas Mine, Grootfontein Constituency, Otjozondjupa Region, Namibia.  Black, sharp, lustrous crystals.   6.5 x 6 x 2 cm 134g  $95.00   I acquired this one from Hamel Mining and Minerals (Jean Hamel) in October 1972.   Although the crystals are not large, the piece is quite appealing.   Crowley Coll. #  300
JC12766.   Close up view.  
JC11874.  Descloizite.  Berg Aukas Mine (Berg Aukus Mine), Grootfontein, Otjozondjupa Region, Namibia.  3.5 x 4 cm 35g.    Ex Earl Calvert collection.  #844.  $40.00  
JC11874.  Back side.  
JC10660.  Descloizite.  Berg Aukas mine, Grootfontein, Otjozondjupa region, Namibia.  Slightly iridescent black, bladed crystals.   8 x 10 cm  266g.  $250.00.   Slightly iridescent black bladed crystals coating matrix.   
JC10660.  Closer view. 
JC10660.  Closer view yet. The iridescence can be seen on these crystals. 
JC10397.  Descloizite   Berg Aukas Mine (Berg Aukus Mine), Grootfontein, Otjozondjupa Region, Namibia.  5 x 9 cm    123g.  $70.00.   Classic specimen from Berg Aukas.  Bladed, near black to brown bladed crystals make up the piece.  There are 3 broken crystals, visible in this photo as light areas near the center top area of the piece.   Otherwise in good shape.  
JC10397.   Closer view.  
JC10213.  Descloizite.  Preguiça Mine, Sobral da Adiça, Moura, Beja, Portugal.  3 x 7.5 cm  64g  $15.00.   Partial coating of near black micro crystals. 
JC10213.  Close up view.  
JC9737.  Descloizite.  Preguica mine, Sobral de Adica, Mora, Beja district, Portugal.  3 x 5 cm  16g.  $10.00.  
JC12556.   Dioptase.  La Farola Mine, Cerro Pintado, Las Pintadas district, Tierra Amarilla, Copiapo Province, Atacama Region, Chile.  2.8 x 5.5 x 7 cm 122g  $70.00.   Matrix covered with a layer of sparkly microcrystals of dioptase.  
JC12556.  Close up.   
JC11672.  Dioptase.  Kaokoveld plateau, Kunene region, Namibia.   5 x 7.5 cm  94g.  $295.00.   Most likely from the Omaue mine.  Typical dioptase color, with good luster.  Stacked crystals for a nice arrangement.  On one side is a sort of "sun burst" arrangement of crystals.  I tried to catch that in the photo below, but it doesn't show really well in the photo.  
JC11672.   Side view.  
JC11672.  Close up of the sort of "sun burst" arrangement of crystals.  
JC10863.   Dioptase, duftite?  N'tola mine, Mindouli, Mindouli district, Pool department, Republic of the Congo.   4.5 x 8 cm  151g. $125.00    Brilliant dioptase green crystals with what appears to be a slight dusting of duftite in one area.     Sawn base.
JC10863.  Closer view. 
JC10863.   Close up view.  
JC10650.  Dioptase, Kaokoveld plateau, Kunene region, Namibia.   3 x 5 cm   34g.  $95.00.   Cute miniature.  Difficult to photograph as the crystals tend to blend into each other in the photos.   Crystals are bright, rather gemmy, with that classic dioptase color.  
JC10650.   Another view. 
JC10650.  Another view. 
JC10548.  Dioptase.  Tsumeb mine, Tsumeb, Namibia.   4.3 x 8 cm  87g  $195. 00    Small, brilliant, gemmy, dioptase crystals on what appears to be dolomite.  Lots of sparkle.   Sawn back.  
JC10548.   Close up.  
JC12083.  Dolomite, cinnabar.  Tongren Mine, Tongren, Guizhou, China.  6 x 7 cm 102g  $35.00.  Several tiny cinnabar crystals scattered about, with one larger near the top in this view.  
JC12083.  Back side. 
JC12083.  Close up of the main cinnabar crystal. 
JC10651.  Dolomite, dioptase.  Tsumeb mine, Tsumeb, Namibia.  4.5 x 6.5 cm  160g.  $18.00.   Well defined white dolomite crystals in a shallow vug, with a small sprinkling of dioptase crystals in the upper right part of the piece. 
JC10651.  Closer view.