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Shomiokite-(Y)

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LMB163313

Shomiokite-(Y)

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Description
Locality: 
Poudrette Quarry, Mont Saint-Hilaire, Québec, Canada
Size Range: 
Thumbnail (1-3cm)
Size: 
1.4 × 2.5 × 1.7 cm
Largest Crystal: 
0.17cm
Description

This small specimen has several pale greenish shomiokite prisms. The prisms have sharp edges but I do not see any terminations. The largest is about 1.7 mm. FOV in the main photo is 6.1 x 4.1 mm. This area has nearly all of the shomiokite. The prisms are actually glassy but are embedded in flaky white stuff, probably adamsite-(Y) – not analyzed. You need 10-20X to view the xls. Weight 0.2 oz.

Mineral Data
What's on the rock

Shomiokite-(Y)

Formula: 
Na3Y[CO3]3·3H2O
Strunz: 
5.CC.20
Hardness: 
2.0 - 3.0
Streak: 
white
Type Locality: 
Shomiokitovoe pegmatite, Umbozero mine (Umbozerskii mine; Umba Mine), Alluaiv Mt, Lovozero Massif, Kola Peninsula, Murmanskaja Oblast', Northern Region, Russia...
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.

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