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Leucosphenite

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LMB185024

Leucosphenite

Rare Mineral

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Description
Locality: 
Poudrette Quarry, Mont Saint-Hilaire, Québec, Canada
Size Range: 
Small miniature (3-4.5 cm)
Size: 
3 × 4 × 1 cm
Description

This is a small specimen, but rich in very good, colorless, leucosphenite xls. You will need 15-20X to view them. In the first close-up, the xls span 2.8 mm top to bottom. The main xl in the second photo is 1.4 mm tall. The brown “crinkly” stuff above it is coated, etched, quartz. The quartz is completely detached from everything else in this cavity (which includes several other leucosphenite xls), and rattles around in it. But it can’t be removed without breaking one of the leucosphenite xls - even though it is not attached to any of them. The third photo attempts to show this entire cavity, but I was not able to illuminate all of the leucosphenite xls properly at once. Two of them are “hiding”. The brown blob in the center is the offending quartz. It is not obvious from the photo, but the reason that it can not be removed is that it has one “arm” wrapped around the leucosphenite on the far left.

Weight 1.4 oz (including case). Single item shipping weight 3.4 oz. Up to 4 oz, one or two small items could be combined for the same postage.

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.

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