Tourmaline, Uvite - Franklin, NJ




Item History & Price

Information:
Reference Number: Avaluer:4269336Country/Region of Manufacture: United States
Franklin Mineral Museum: Mineral crystals species
Original Description:
Tourmaline crystals and crystal sections. The Franklin Marble is world renown for its varied number of mineral species. It is the host rock of the Franklin and Sterling Hill zinc orebodies. Even without the zinc deposits at Franklin and Sterling Hill, the Franklin Marble would be a well known mineral locality in its own right. Tourmaline is one of the rarer and most desired mineral species to occur in the marble of which there are as many as 50 species. The exact species of tourma...line has not been identified but it is likely to be uvite which statistically is the most common tourmaline in the Franklin Marble. The tourmaline has an orange color with a vitreous luster. There are striations on portions of the exposed crystal and is indicative of remnant crystal faces. The tourmaline does fluoresces a moderate orange under shortwave (254nm) ultraviolet light. There are numerous blocky shaped, pale gray diopside crystals nestled amongst the uvite sections with a mass of diopside making up the remainder of the matrix. The specimen has been etched free with acid to remove what was most likely calcite.There were numerous active quarries in the Franklin Marble and the exact location of this particular specimen is unknown. Paraphrasing from Pete Dunn's monograph,  "Franklin and Sterling Hill, New Jersey: The World’s Most Magnificent Mineral Deposits.", the locality where these specimens are from is properly called the Fowler Quarry and is very much larger than the Furnace Quarry, and is located at the end of an unnamed access road, immediately adjacent to and south-southwest of the Furnace Quarry. Although not visible from Cork Hill Road, it is nearly adjacent to its west side. This quarry was properly known early in this century as the B. Nicoll Quarry; however, the name has been often misspelled as Nicol, Nichols, and Nicols. The designation "Fowler Quarry" used here is taken from Palache (1935). The Fowler Quarry has been known in recent times, but no longer, as the Cellate Quarry (informal) and/or the Colloids Inc. Quarry (informal); both names are derived from resident, subsequent industries; some specimens may be so-labeled. It was here that the best norbergite crystals were found, as were uvite, pyrrhotite, graphite, spinel, and phlogopite. The Franklin Marble is classified as a metasedimentary deposit and dates to 1.1 billion years old.Dimensions are 7x7.7x3.1cm - 2¾x3x1¼in. Please note the centimeter cube and inch bar for scale.From a Franklin Marble Quarry, Franklin, NJ. The previous collection this specimen was in is #123, the Princeton University Collection with an attached tag that reads 48/426. The tags were attached at Princeton University.#123 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 minerals,  copy and paste and go to >>> geology.com/articles/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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