HELVINEMn2+4Be3(SiO4)3SCrystal: Cubic Hardness: 7 - 7.5 Sp.G.: 3.61 Cleavage: None Fracture: Conchoidal to Uneven Colour: Light to Dark Green, Yellow to Reddish Brown, Pink Lustre: Greasy to Vitreous |
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| Rare Mineral Helvine occurs in abundance at Huanggang Mine,Inner Mongolia. Geologically, the Huanggang mines are an Fe-Sn exogreisen, formed when Cretaceous-age anorogenic-type granites intruded calcaerous sedimentary rocks and metal-rich fluids migrated upward from the granitic intrusives into overlying skarn and vein deposits, forming rich polymetallic orebodies which are also rich in crystallized minerals found in abundant open pockets. Helvite-Genthelvite crystals from Huanggang are recognized as being probably the best in the world. No healing properties known |
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for displaying and protecting your favourite minerals, gems, fossils, meteorites or other collectables. We also make mineral display stands and acrylic blocks. FOLLOWING LINKS: Crystal Showcase™ MINERAL DISPLAY BOXES MINERAL DISPLAY STANDS ACRYLIC BLOCKS MINERAL STORAGE BOXES MINERAL PRESENTATION DOMES GEM BOXES MAGNIFYING BOXES |
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