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Neighborite

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LMB660905

Neighborite

Rare Mineral

Description Tabs

Description
Locality: 
Poudrette Quarry, Mont Saint-Hilaire, Québec, Canada
Class: 
Crystals on Matrix
Size Range: 
Thumbnail (1-3cm)
Size: 
2 × 2.5 × 1.2 cm
Description

This specimen features numerous crystals of the rare mineral neighborite. The crystals are very small (<= 0.3 mm), but unusually gemmy and sharply formed. They sit on small, gemmy, dolomite rhombs, and there are also a some very small, sparsely scattered, white plates of beryllonite. The neighborite is quite pretty, but you will need at least 30X to enjoy it – 50X is better.

The first pair of photos (FOV 1.7 x 1.25 mm) shows one of the nicer neighborite clusters. The white platy stuff is the beryllonite. Beryllonite is very rare at MSH, but this is not a significant beryllonite specimen I note it just FYI.

Most of the neighborite crystals are cubes with or without small corner modifications. The next pair of photos (FOV 2.1 x 1.3 mm) shows a crystal that is nearly octahedral. This is a less common habit. The tiny dark gray metallic looking crystals are probably rutile. The two minerals are often associated. But these crystals are too tiny to be sure.

The thie pair of photos (FOV 1.8 x 1.3 mm) shows another group of neighborite crystals to 0.3mm with a bit of beryliionitr on on eof them.

Single item shipping weight (with TN case) is 3.5 oz (99 g). For shipments outside the USA, up to a total weight < 8 oz (225g), this can be combined with items from this or other auctions for the same postage.

Within the USA, postage for total weights up to 13 oz ranges from $4.25 to $6.50 (including packing etc) regardless of destination. Above 13 oz, I will use “own box” Priority Mail. The rate, including packing, varies by destination from $7.25 to $9.50.

See my updated “Shipping Policy” for details.

Mineral Data
What's on the rock

Neighborite

Formula: 
NaMgF3
Strunz: 
3.AA.35
Hardness: 
4.5
Type Locality: 
Sun Haverstrite Well, Uintah Co., Utah, USA
LMB minerals

Seller Information

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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.