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Calcioburbankite On Petersenite-(Ce)

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LMB208397

Calcioburbankite On Petersenite-(Ce)

Type Locality

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Description
Locality: 
Poudrette Quarry, Mont Saint-Hilaire, Québec, Canada
Size Range: 
Thumbnail (1-3cm)
Size: 
0.9 × 2 × 1.1 cm
Largest Crystal: 
0.05cm
Description

Numerous pinacoidally terminated prisms of petersenite-(Ce) encrusted by cream/tan calcioburbankite. MSH is the TL for both of these rare species. Very rarely, calcioburbankite has been found as distinct, colorless to pale pink, crystals in marble xenoliths. This pegmatite occurrence, with siderite, albite, aegirine and microcline is far more typical. This is a micro. FOV in the first two photos is 2.8 x 1.9 mm. In the third photo it is 1.9 x 1.3 mm. The largest crystals are a bit less than ½ mm, but they are still visible in the macro photo (bottom center). This specimen is ex Cynthia Peat (Peatite-(Y)). Weight 0.3 oz (including case). Single item shipping weight 2.9 oz. Up to 4 oz, this can be combined with one or two other small items for the same postage. Not suitable for sending via padded envelope.

Mineral Data
What's on the rock

Calcioburbankite

Formula: 
Na3(Ca,REE,Sr)3(CO3)5
Strunz: 
5.AC.30
Crystal System: 
Hexagonal
Hardness: 
3.0 - 4.0
Streak: 
White
Type Locality: 
Poudrette quarry (Demix quarry; Uni-Mix quarry; Desourdy quarry; Carrière Mont Saint-Hilaire), Mont Saint-Hilaire, La Vallée-du-Richelieu RCM, Montérégie, Québec, Canada

Petersenite-(Ce)

Formula: 
Na4(Ce,La,Nd)2(CO3)5
Strunz: 
5.AD.15
Crystal System: 
Monoclinic
Hardness: 
3.0
Type Locality: 
Poudrette quarry (Demix quarry; Uni-Mix quarry; Desourdy quarry; Carrière Mont Saint-Hilaire), Mont Saint-Hilaire, La Vallée-du-Richelieu RCM, Montérégie, Québec, Canada
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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