Siderite psm Calcite (M878)
This is siderite epimorph after calcite with sphalerite. The calcite is completely replaced, the crystals are hollow inside. Usually these crystals are monochrome - most times brown. This specimen is quite uncommon - the larger crystals show dark brown and light beige color - sharp seperated by faces. There is also a second generation of smaller crystals - they are snow-white. So although it is all the same mineral it appears in three different colors. The crystal size is remarkable, the overall size as well. This material came to the market in 2006, but after this one discovery no new material was discovered. This is an excellent piece of this rare material and in excellent condition all around.
This is siderite epimorph after calcite with sphalerite. The calcite is completely replaced, the crystals are hollow inside. Usually these crystals are monochrome - most times brown. This specimen is quite uncommon - the larger crystals show dark brown and light beige color - sharp seperated by faces. There is also a second generation of smaller crystals - they are snow-white. So although it is all the same mineral it appears in three different colors. The crystal size is remarkable, the overall size as well. This material came to the market in 2006, but after this one discovery no new material was discovered. This is an excellent piece of this rare material and in excellent condition all around.
This is siderite epimorph after calcite with sphalerite. The calcite is completely replaced, the crystals are hollow inside. Usually these crystals are monochrome - most times brown. This specimen is quite uncommon - the larger crystals show dark brown and light beige color - sharp seperated by faces. There is also a second generation of smaller crystals - they are snow-white. So although it is all the same mineral it appears in three different colors. The crystal size is remarkable, the overall size as well. This material came to the market in 2006, but after this one discovery no new material was discovered. This is an excellent piece of this rare material and in excellent condition all around.
Siderite psm Calcite (M878)
South Africa
LOCATION
Aggeneys, Khâi-Ma Local Municipality, Namakwa District Municipality, Northern Cape, South Africa
SIZE
171 x 108 x 83 mm
DESCRIPTION
This is siderite epimorph after calcite with sphalerite. The calcite is completely replaced, the crystals are hollow inside. Usually these crystals are monochrome - most times brown. This specimen is quite uncommon - the larger crystals show dark brown and light beige color - sharp seperated by faces. There is also a second generation of smaller crystals - they are snow-white. So although it is all the same mineral it appears in three different colors. The crystal size is remarkable, the overall size as well. This material came to the market in 2006, but after this one discovery no new material was discovered. This is an excellent piece of this rare material and in excellent condition all around.