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Labuntsovite-Mn

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LMB166175

Labuntsovite-Mn

Description Tabs

Description
Locality: 
Poudrette Quarry, Mont Saint-Hilaire, Québec, Canada
Size Range: 
Small miniature (3-4.5 cm)
Size: 
2 × 3 × 1.5 cm
Largest Crystal: 
0.10cm
Description

Very nice xl, slightly < 1 mm. But never mind the size - this is a micro. You will need 20-30X to view it. The white spheroids and sprays are natrolite. (Analyzed because thomsonite was suspected.) I resisted the temptation to crop the photo at the top, because it shows that some of the natrolite spheroids hide labunsovite. (A fact that, however, does us little good.) Weight 0.3 oz.

Mineral Data
What's on the rock

Labuntsovite-Mn

Formula: 
Na4K4(Ba,K)2Mn2+(Ti,Nb)8(Si4O12)4(O,OH)8·10-12H2O
Strunz: 
9.CE.30e
Hardness: 
6.0
Type Locality: 
Pegmatite No. 19, Kuftn'yun 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.