Green Gemmy Willemite - Franklin, NJ

A Franklin classic. Here we have a cabinet sized specimen of glassy to gemmy, medium green willemite with many translucent sections and spots. This specimen is clean all over and sits very nicely without any propping. There are some minor sections and grains of resinous, red zincite along with abundant grains of black, metallic franklinite on the rear surface of the specimen. Willemite was named after King Willem of the Netherlands after the locality at the Moresnet (Plombiè...res-Altenberg-Moresnet) mining district, Verviers, Liège Province, Belgium. This species was previously discovered in 1825 and was identified as "siliceous oxyde of zinc" by Lardner Vanuxem and William Hypolitus Keating. At the time, "siliceous oxyde of zinc" was a synonym of electric calamine, now known as hemimorphite. A series of errors and misunderstanding eventually led to the Belgian location getting the type locality attribution rather than Franklin. The willemite fluoresces a bright green under shortwave (254nm) ultraviolet light. There just aren't too many gemmy willemites of this color around anymore.Dimensions are 11.2x6.4x5.4cm - 4¼x2½x2in. Please note the centimeter cube and inch bar for scale.From the Franklin Mine, NJ.The previous collection this specimen was in is #501, the Franklin Mineral Museum Collection and deaccessed from the collection. The deaccession number is #724. The tag was attached at the Franklin Mineral Museum.#501 is the museum's Collection Sale number previously offered in the museum shop.>>> We do COMBINED SHIPPING for multiple items. To request an invoice from us that combines shipping ALWAYS click the Add to cart button in eBay to add items until you are done. DO NOT PROCEED to checkout, rather go click the Request Total from Seller button. <<< === There is an instructional video on how to request combined shipping is here https://www.youtube.com/watch?v=FvDe7Fg7R4Q === All potential buyers need to be aware of the fact being able to view fluorescent minerals requires an ultraviolet light. Most of the minerals from the Franklin and Sterling Hill zinc mining district fluoresce under shortwave ultraviolet light. The shortwave wavelength is 254nm or otherwise known as UV C. Always read the description carefully to determine if the main mineral of interest for a particular specimen will fluoresce. There are several available brands and models of ultraviolet lights on eBay and other online sources. For further information on ultraviolet light and fluorescent mineral go to Geology.com and then look under >> Minerals >> Fluorescent Minerals.>>>> We Buy Collections <<<<DISCLAIMER: Every reasonable effort was made to accurately identify the mineral specie(s) noted in each specimen. The occasional label from previous collection(s) may misidentify some species and the current title and description here reflects the latest mineral specie(s) identification. A modest effort was made to depict a fluorescent specimen accurately as possible, but some overexposure should be expected in some photographs to compensate for a weak response of a fluorescent specimen.--- All photographs appearing on this listing or any other Franklin Mineral Museum listing are the property of the Franklin Mineral Museum. Photographs can be used strictly for personal use only. Otherwise the photographs posted here are protected by U.S. Copyright Laws, and are not to be downloaded or reproduced for public use or distribution in any way without the written permission of the Franklin Mineral Museum. ---


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