Moving mountains for you
Switch currency

Current Live Auctions

Current Live Fixed Price Sales





Description Tabs

Franklin, Sussex County, New Jersey, United States of America
Size Range: 
Miniature (4.5-7 cm)
4.7 × 4.5 × 2.5 cm

When this limestone quarry was active, it was well known as a producer of very brightly fluorescent norbergite specimens. For the quarry, this is a relatively small, but very good example, of just how bright the norbergite here could get. And the specimen is still large enough to make a good fluorescent display without costing a fortune in postal fees.

Regarding the UV photos: Keep in mind that, unless you have a “death star” UV source, all UV photos are time exposures. You can make them as bright as you want by varying the exposure and/or using SW. You can also make the UV response any color you want, again via SW. These images are an attempt to reproduce what I think I saw using my UV source, namely a very bright, pale yellow response.

But my camera and Photoshop thought differently. Depending on the tool used, the color came out either greenish-yellow (chartreuse) or cream/off white. So I had to do “stuff” to make it look like what I think I saw. Perhaps the most useful thing to say is, that the color is “some sort” of yellow and that it is bright enough to keep company with willemite without getting lost (although it is not as bright as that mineral).

Reagarding the norbergite ID: Over the years there has been a good deal of controversy regarding norbergite vs chondrodite in the Franklin area limestone quarries. The current expert consensus seem to be that “if it fluoresces, it is norbergite, else chondrodite”. But many specimens are probably mixtures.

The matrix is grayish calcite with lots of graphite inclusions. If there are any euhedral norbergite crystals here (which I doubt), your chances of extracting any are essentially nil.

Single item shipping weight 5.1 oz. Note that USPS foreign packet rates recently increased significantly. It may be advantageous for foreign customers to hold an "open box" so as to reduce postage costs by combining with items from a future auction. Let me know, and I will generate a new “item only” invoice. Postage will be invoiced when all items are actually shipped.

Outside the USA, the stated postage and packing rate applies up to a total weight of 8 oz (225 g). It is no longer possible to save on postage by using a padded envelope for shipping.

Within the USA, there is a nominal increase of $0.20 for each additional ounce. Above 13 oz, I will use Priority Mail. Up to 16 oz, the “own box” Priority rate is $8.50 (including packing).

Please see my "Shipping Policy" for details. 

Mineral Data
What's on the rock


Crystal System: 
6.0 - 6.5
Type Locality: 
Östanmossa mine, Röberg ore field, Norberg, Västmanland, Sweden
LMB minerals

Seller Information

Payment options: offline, paypal_wpp, paypal_wps

Seller's terms and conditions

In addition to the standard terms and conditions, please note the following. Almost all IDs are visual. While in most cases the ID is obvious, there may be cases where it is not. If you are doubtful about a particular ID, please ask for more information. Or do not bid! Similarly, if you are not sure that the specimen meets your criteria, do not bid. I have tdone the best I can with the photos. Nevertheless, if you are not happy with a specimen for any reason, I will refund the bid price – but not the shipping costs (unless the fault is clearly mine) – if the specimen is returned. This policy applies even if analysis of the specimen shows that my ID was incorrect. When in doubt, ask - or don’t bid. Note that most crystals at MSH and Varennes are micros - even if on large specimens. Please pay attention to the stated sizes. Any customs duties, fees etc. are the responsibility of the buyer.