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Norbergite

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LMB518441

Norbergite

Fluorescent

Description Tabs

Description
Locality: 
Lime Crest Quarry, Sparta Township, Sussex County, New Jersey, United States of America
Class: 
Crystals on Matrix
Size Range: 
Small miniature (3-4.5 cm)
Size: 
2.2 × 3.5 × 1.8 cm
Largest Crystal: 
1.30cm
Weight: 
9.00gr
Description

This quarry is known for exceptional norbergite crystals – but they were never common. This 1.3 cm crystal is not large for the locality, but it is relatively sharp and has almost no damage. It survived because it was exposed partly by etching the calcite matrix with acid. These crystals are very brittle and purely mechanical extraction almost always results in breakage.

The crystals have not been analyzed. The norbergergite ID is based on the bright yellow fluorescence. Over the years, there has been considerable controversy regarding norbergite vs chondrodite in the area quarries. Currently, expert opinion is that fluorescent material is norbergite. Probably there are exceptions.

Single item shipping weight  3.4 oz. If you are planning to hold an "open box" so as to reduce postage costs by combining items from a future auction, please note that USPS postage rates recently changed significantly.

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.

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

Norbergite

Formula: 
Mg3(SiO4)(F,OH)2
Strunz: 
9.AF.40
Crystal System: 
Orthorhombic
Hardness: 
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.