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Zakharovite & Villiaumite

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LMB208549

Zakharovite & Villiaumite

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Description
Locality: 
Demix-Varennes Quarry, Varennes & St-Amable, Montérégie, Québec, Canada
Size Range: 
Small cabinet (7-10 cm)
Size: 
5.5 × 7.5 × 3.5 cm
Description

This specimen could use a trim. Easier said than done. The matrix is very tough and breaks unpredictably even with a splitter. Offered “as is” for the fairly nice zakharovite and the association with villiaumite – an uncommon mineral in this quarry. But the villiaumite is not euhedral – I have never seen any from this quarry. Some of it is transparent however – e.g. center of the first photo.)

The EDS scans are for two samples, one of which si from the same exact find as this one, in which the zakharovite is infused with peculiar bronzy flakes (top left in the first photo) that are apparently some sort of Fe mineral (i.e. “rust”). The other scan is for a from a nearby find that did not have any of this “rust”.

Single item shipping weight 7.9 oz. Combining with other items will require additional postage ($0.75 -$2.50, depending on destination – for the next 4 oz).

Mineral Data
What's on the rock

Zakharovite

Formula: 
Na4Mn5Si10O24(OH)6·6H2O
Strunz: 
9.EE.65
Crystal System: 
Trigonal
Hardness: 
2.0
Colour: 
Yellow
Type Locality: 
Karnasurt Mt, Lovozero Massif, Kola Peninsula, Murmanskaja Oblast', Northern Region, Russia...

Villiaumite

Formula: 
NaF
Strunz: 
3.AA.20
Crystal System: 
Isometric
Hardness: 
2.0 - 2.5
Streak: 
White
Type Locality: 
Rouma Island (Roume Island; Roma Island; Ruma Island), Los Archipelago (Los Islands), Guinea
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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