Wollastonite, Margarosanite, Native Lead - Franklin, NJ
Item History & Price
| Reference Number: Avaluer:31663962 | Country/Region of Manufacture: United States |
| Franklin Mineral Museum: Fluorescent mineral species |
A classic fluorescent wollastonite from the Franklin mine. This example of wollastonite is the renown "fibrous" wollastonite and some collectors in the old days had called this type of wollastonite "pectoprehnite." However, it is NOT a valid mineral species name. This type of wollastonite is much desired by fluorescent collectors and very atypical for Franklin mine occurrences of wollastonite. The matrix is mainly abundant white, tight clumps of fibrous or radiating crystals of wollast...onite. There have been several finds of wollastonite in the Franklinite mine. As described by Richard Bostwick in an issue of "The Picking Table". (V. 45, No. 2 - Fall 2004) The Journal of the Franklin-Ogdensburg Mineralogical Society, "One type actually looks like classic pectolite r localities, being fibrous and of radiating habit. This is what we now call Fibrous wollastonite; it is part of the remarkable minehillite assemblage. (There is no minehillite in this particular specimen) Here the locality in the mine and the date (1951) were recorded, while the identification of the fibrous mineral as wollastonite was published over 20 years later (Parker & Fainberg, 1975). The other "pectolite, " now called "Original-Find wollastonite", is something of a mystery. Its locality underground and date of discovery apparently were not recorded, and the detail-identification have not been published. Collector lore places its emergence onto the market in the mid-1930s, and old-timers will recall seeing this material labeled "pectolite with clinozoisite, " though apparently neither mineral is now believed tt in this assemblage. While the orange fluorescence of this material was less bright than that of typical Franklin wollastonite, specimens were still valued for their rarity." Associated with the wollastonite are spots and small portions of fluorescent margarosanite. There are abundant portions of native lead. The native lead usually is found as a gray inclusion in a wide range of minerals, especially in the "Parker Shaft" suite of mineral species. Close examination of the native lead will reveal that the native lead appears as an inclusion in the matrix and as bright, metallic gray smears and scales ON the matrix, a decided rarity for this species from the Franklin mine.The wollastonite fluoresces a moderate to bright orange and the margarosanite, a bright blue-white under shortwave (254nm) ultraviolet light. This is an increasingly hard to obtain assemblage of fluorescent wollastonite, and it would be hard to pass up an opportunity to acquire such a fine example of fluorescent wollastonite.Dimensions are 5.5x3.9x4.0cm - 2x1½x1½in. Please note the centimeter cube and inch bar for scale.Weight in grams and ounces: 94.7g - 3.34oz.From the Franklin mine, Franklin, NJ.
The previous collection this specimen was in is #192, Roslyn Franklin.
#192 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 on eBay to add items until you are done. DO NOT PROCEED to checkout, instead 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 that being able to view fluorescent minerals requires an ultraviolet lamp. 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. ALL fluorescent minerals depicted in our storefront are illuminated by two (2) 9 watt Triple short/mid/longwave AC Model 9SM-110 Way Too Cool LLC ultraviolet lamps, and the shortwave tubes and filters were replaced in late 2018. 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 the following 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 reflect the latest mineral specie(s) identification. A modest effort was made to depict a fluorescent specimen accurately as possible. In some cases, overexposure should be expected in select photographs to compensate for a weak response of a fluorescent specimen. All buyers should exercise safe viewing practices regarding the use of ultraviolet light. Visual dark adaption is highly recommended in the optimal viewing of fluorescent minerals. Buyers should also be aware of what type of lighting to view the specimens under. This can result in perceived differences of color and contrast due to color and contrast shifting under various kinds of lights available.All photographs were taken with a Nikon D5300 digital camera with a Nikon DX AF-S 18-55mm lens attached with a UV filter. Lighting was done with a pair of OSRAM 8.5 watt LED A19 5000K 800 lumens bulbs in brushed aluminum reflectors. The photographs were processed on a color-calibrated flat panel monitor. Do note the Imperial measurement conversion is the nearest equivalent to the listed metric measurement.
--- 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. They are not to be downloaded or reproduced for public use or distribution in any way without the written permission of the Franklin Mineral Museum. ---
The previous collection this specimen was in is #192, Roslyn Franklin.
#192 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 on eBay to add items until you are done. DO NOT PROCEED to checkout, instead 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 that being able to view fluorescent minerals requires an ultraviolet lamp. 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. ALL fluorescent minerals depicted in our storefront are illuminated by two (2) 9 watt Triple short/mid/longwave AC Model 9SM-110 Way Too Cool LLC ultraviolet lamps, and the shortwave tubes and filters were replaced in late 2018. 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 the following 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 reflect the latest mineral specie(s) identification. A modest effort was made to depict a fluorescent specimen accurately as possible. In some cases, overexposure should be expected in select photographs to compensate for a weak response of a fluorescent specimen. All buyers should exercise safe viewing practices regarding the use of ultraviolet light. Visual dark adaption is highly recommended in the optimal viewing of fluorescent minerals. Buyers should also be aware of what type of lighting to view the specimens under. This can result in perceived differences of color and contrast due to color and contrast shifting under various kinds of lights available.All photographs were taken with a Nikon D5300 digital camera with a Nikon DX AF-S 18-55mm lens attached with a UV filter. Lighting was done with a pair of OSRAM 8.5 watt LED A19 5000K 800 lumens bulbs in brushed aluminum reflectors. The photographs were processed on a color-calibrated flat panel monitor. Do note the Imperial measurement conversion is the nearest equivalent to the listed metric measurement.
--- 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. They are not to be downloaded or reproduced for public use or distribution in any way without the written permission of the Franklin Mineral Museum. ---
