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Leucosphenite

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LMB177615

Leucosphenite

Rare Mineral

Description Tabs

Description
Locality: 
Poudrette Quarry, Mont Saint-Hilaire, Québec, Canada
Size Range: 
Thumbnail (1-3cm)
Size: 
0.8 × 1.8 × 1.1 cm
Largest Crystal: 
0.11cm
Description

The first close-up photo (FOV 2.1 x 2.6 mm) is a side view of a perfect, pale blue, leucosphenite xl 1.1 x 0.8 mm. The second close-up (FOV 2.2 x 3.2 mm) is a top/side view. Below the xl are some small pectolite xls with fibrous terminations and very sharp glassy feldspar xls (probably albite). You need 10-20X to view the xl clearly. But the xl is clearly visible (top center) in the macro photo.

The specimen is from an igneous breccia.

Weight (including micro box) 0.2 oz. Single item (small box) shipping weight 2.2 oz. Up to a total weight < 4 oz, this can be combined with other items for the same postage. Alternatively, otuside the USA, this could be sent in a padded envelope for $7.

Mineral Data
What's on the rock

Leucosphenite

Formula: 
BaNa4Ti2B2Si10O30
Strunz: 
9.DP.15
Hardness: 
6.0 - 6.5
Type Locality: 
Narsaarsuk pegmatite (Narssârssuk pegmatite), Narsaarsuk Plateau, Igaliku (Igaliko), Narsaq, Kujalleq, Greenland
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.