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RM899   Fluorite with quartz

Huanggang Mines, Huanggang Fe-Sn deposit, Hexigten Banner, Ulanhad League, Inner Mongolia, China

These specimens, novelty, 2014, show very unusual fluorite crystals, with an uncommon color. They show cubic crystals beveled by the dodecahedron and deep hoppered growths. Also almost globular crystals in which the dodecahedral forms predominate. The color is very, very intense, vivid shades that vary between indigo and navy blue, clearly visible when light is incident. We observed also green tones within a few crystals. They have grown on quartz crystals covered by layers of smaller milky quartz. An aesthetic specimen for fluorite and crystal collectors.


Size: 9.4 x 6.7 x 6.0 cm.
Main crystal: 21 x 20 mm.
Found in 2014.

 

RM900   Fluorite with quartz

Huanggang Mines, Huanggang Fe-Sn deposit, Hexigten Banner, Ulanhad League, Inner Mongolia, China

These specimens, novelty, 2014, show very unusual fluorite crystals, with an uncommon color. They show cubic crystals beveled by the dodecahedron and deep hoppered growths. Also almost globular crystals in which the dodecahedral forms predominate. The color is very, very intense, vivid shades that vary between indigo and navy blue, clearly visible when light is incident. We observed also green tones within a few crystals. They have grown on quartz crystals covered by layers of smaller milky quartz. An aesthetic specimen for fluorite and crystal collectors.


Size: 11.4 x 7.6 x 7.4 cm.
Main crystal: 20 x 19 mm.
Found in 2014.

 

RM2040   Roweite with Johnbaumite and andradite

Shijiangshan mine, Linxi, Linxi Co., Ulanhad League, Inner Mongolia, China

Fan-shaped aggregates of excellent roweite crystals, beige orange colour, defined, good size and with quality for this species. Roweite is a rare calcium and manganese borate. They are accompanied by white hexagonal prismatic crystals of johnbaumite, up to 7 mm, excellent for the species. Johnbaumite is a very rare calcium arsenate, the arsenic analog of hydroxylapatite. In a matrix with green andradite and transparent colorless pentahydroborite. A very complete specimen, with very rare and well crystallized species.


Size: 5.5 x 4.5 x 3.7 cm.
Main crystal: 1.5 cm (Roweite)/ 7 mm (Johnbaumite)
Found in 2017.

Fluorescent under short wave UV
 
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