285G Blue Green Fluorite Calcite Chalcopyrite Fluorescent Mineral Specimen #305

Description: YGX Green/Blue Cube Fluorite Translucent Yaogangxian Crystal Mineral Specimen 285 Grams with Angel Wing Calcite & Chalcopyrite Crystals Hunan Province Location: Yaogangxian Mine, Hunan Province, China Weight: approx. 285.50 Grams Measures: 3.75'' (95.98mm) x 2.48'' (62.99mm) x 2.19'' (55.64mm) A beautiful combination specimen of a YGX super translucent light Green/Blue Cube Fluorite with Angel Wing Calcite formations and glistening iridescent Chalcopyrite crystals scattered about, resulting in a specimen of exquisite composition. This superb end piece displays elegantly on its own with a perfect octahedral cube formation. The cube faces are completely smooth with crisp edges and perfect cleavage. Some of the cube corners are naturally cleaved without any traces of contact, dings, or other wear around the cleave, giving some cubes an interesting faceted appearance. This is considered natural damage, however I don't feel it takes away from it's beauty, since "Mother Nature" is perfectly imperfect! Other than the natural cleaves, there doesn't appear to be any damage to this piece. The Chalcopyrite glistens in daylight with iridescent sparkling golds, blues and pinks. But this specimen really shines under LW UV lighting with brilliant electric blue Fluorite and super bright salmon pink Calcite luminescence! The contrasting shapes, it's fluorescence and the context of quality in this crystal group, make this piece an exceptional three dimensional mineral composition! Note: Be aware that being able to view fluorescent minerals requires an ultraviolet (UV) lamp. A LW UV 365nm was used for this specimen. A black light is not a UV light and in most cases fluorescent minerals will not fluoresce with a black light. ***I photographed this piece in a completely dark room using a Sony Alpha 7III DSLR Camera with a Sony FE-90mm Macro G Lens, and 3 - LW UV 365nm flashlights with included ZWB2 black filter glass all positioned strategically. This gives me complete UV light coverage of the specimens I photograph for my listings. FYI...If you aren't using quality UV lights with filters to fluoresce any UV reactive specimens that you purchase from my shop, your results will vary. In short, you need a quality UV flashlight that emits a high-intensity ultra violet wavelength and the correct wavelength for the specific mineral you wish to fluoresce to result in a response. (LWUV 365nm Long Wave Ultra Violet Light or UVA, MWUV 310nm or UVB, & SWUV 255nm or UVC) Also the light needs to have a high quality ZWB2 or Hoya glass filter to allow the transmission of pure UV light through the filter while restricting natural light absorption. A dark room is also necessary for the best UV reaction. (Be aware that lower quality filters will eventually burn out due to the heat emitted by UV light, ultimately rendering the light useless and requiring replacement.) What makes minerals fluorescent? Ultraviolet light is a form of electromagnetic radiation. Fluorescence occurs when electrons in certain atoms of a crystallized mineral absorb the radiated energy from a UV light (Photons). The incoming photons bump the electrons into higher energy states, and they respond to the ultraviolet light. The remaining light energy is out of balance and remitted and can be seen as a visible color. The reason for the fluorescent remitted colors is due to impurities in the mineral, or activators; which become part of the mineral?s chemistry by taking the place of atoms in the host mineral, basically occupying the crystal lattice structure. A majority of activators are atoms of certain Rare-earth elements, transition metal elements (such as Chromium, Manganese, Iron, and Zinc) and alkaline elements (Sodium or Potassium) that cause the resulting fluorescence in a mineral. The level of fluorescence depends on the percentage of the impurities in relationship to the host atoms. Too much/little, results in low or no fluorescent response. Fluorite, is also known as Fluorspar, and is named for its fluorescence under ultraviolet (LW UV 365nm) and cathode-ray irradiation. Since pure Fluorite is colorless, the existence and specific levels of these impurities determine the color of Fluorite in natural light, but also lead to the fluorescent color and phosphorescence it remits. Thanks for looking! ~McGarnickel~ SKU: 305

Price: 382.6 USD

Location: Vineland, New Jersey

End Time: 2024-09-04T18:22:03.000Z

Shipping Cost: N/A USD