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RM3648   Vivianite and goethite
Fe²⁺Fe²⁺₂(PO₄)₂·8H₂O
  -  8. Phosphates, arsenates and vanadates

On a goethite matrix, with stalactitic and botryoidal forms, various aggregates of tabular to prismatic vivianite crystals. Very aerial, with a very intense green, almost black, color, with green luster and reflections. A very good specimen for the species.

Size: 6.2 x 4.7 x 3.9 cm.
Main crystal: 18 mm.
Col. F. Coune (Belgique).
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RM1904   Vivianite
Fe²⁺Fe²⁺₂(PO₄)₂·8H₂O
  -  8. Phosphates, arsenates and vanadates

Group of very aesthetic vivianite crystals, forming rosettes, on a bivalve as a matrix, very visible. These specimens were found in levels of phosphorus ochres accompanied by other phosphates, east of the Crimean peninsula, in the well-known Kerch iron-ore deposits. Very curious.

Size: 7.3 x 6.6 x 4.2 cm.
Main crystal: 10 mm.
Classic locality
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RM1893   Vivianite
Fe²⁺Fe²⁺₂(PO₄)₂·8H₂O
  -  8. Phosphates, arsenates and vanadates

Group of very aesthetic vivianite crystals, very good size, with excellent brightness and intense color, blue green transparencies and with iridescence. These specimens were found in levels of phosphated iron ores accompanied by other phosphates, east of the Crimean peninsula, in the well-known Kerch iron-ore deposits.

Size: 5.8 x 5 x 3.4 cm.
Main crystal: 35 mm.
Classic locality
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RM1371   Vivianite
Fe²⁺Fe²⁺₂(PO₄)₂·8H₂O
  -  8. Phosphates, arsenates and vanadates

Group of sharp vivianite crystals forming aggregates. Excellent brilliance and intense deep green color, visible at the terminal faces of the crystals. These minerals appear in phosphate vein, in fossiliferous areas, the phosphate source.

Size: 7.5 x 6.0 x 3.0 cm.
Main crystal: 27 x 3 mm.
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RM556   Vivianite
Fe²⁺Fe²⁺₂(PO₄)₂·8H₂O
  -  8. Phosphates, arsenates and vanadates

Group of sharp vivianite crystals forming a perfect and aesthetic radial aggregate, not usual for the locality. Excellent brilliance and intense deep green color, visible at the terminal faces of the crystals. These minerals appear in phosphate vein, in fossiliferous areas, the phosphate source. Classic in this area are anapaite specimens in fossil brachiopods.

Size: 4,0 x 3,7 x 2,2 cm.
Found in 2001.
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