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Weloganite & Quartz

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LMB177077

Weloganite & Quartz

Type Locality
Rare Mineral

Description Tabs

Description
Locality: 
Francon Quarry, Québec, Canada
Class: 
Crystals on Matrix
Size Range: 
Small miniature (3-4.5 cm)
Size: 
3.5 × 2.9 × 2.2 cm
Largest Crystal: 
0.60cm
Description

The Francon quarry is the type locality for weloganite. Weloganite has been reported from three – possibly four – other localities, but none of these has produced significant specimens. This is just a small example of Francon weloganite, but with good, fairly deep, yellow color.

The crystal is about 6 mm in greatest dimension. The crystal is bumpy on one edge/side due to a previous contact, probably with quartz crystals. (There are several small smoky quartz crystals on the specimen.) This is show in the first pair of close-up photos (FOV 4.4 x 6.5 mm) - but the crystal  is to large to fit completely on the camera sensor even at my lowest magnification.

The third photo (FOV 4.6 x 6.3 mm) attempts to show both the “good” side of the crystal (front) and the “bad” side (upper left). (The color came out too lemony here.)

Single item shipping weight 3.6 oz. Outside the USA, the stated postage and packing rate applies up to a total weight of 8 oz (225 g).

Within the USA, postage now varies by destination. For total weights up to 13 oz, it ranges from $4.50 to $7.00 (including packing etc). Above 13 oz (up to 16 oz), I will use “own box” Priority Mail. The rate, including packing, varies from $8 to $10.

Mineral Data
What's on the rock

Weloganite

Formula: 
Na2Sr3Zr(CO3)6·3H2O
Strunz: 
5.CC.05
Hardness: 
3.5
Streak: 
white
Type Locality: 
Francon quarry, Montréal, Québec, Canada

Quartz

Formula: 
SiO2
Strunz: 
4.DA.05
Crystal System: 
Trigonal
Hardness: 
7.0
Streak: 
White

Current price

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Starting price

$5
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Shipping Information

Postage Area Price
United States
$4.50
Canada
$11
Europe
$15.25
Rest of World
$15.50

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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