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Pectolite Pyrophanite & Fluorapophyllite-(K)

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LMB548687

Pectolite Pyrophanite & Fluorapophyllite-(K)

Classic Locality

Description Tabs

Description
Locality: 
Poudrette Quarry, Mont Saint-Hilaire, Québec, Canada
Class: 
Crystals on Matrix
Size Range: 
Small miniature (3-4.5 cm)
Size: 
1.5 × 3 × 1.5 cm
Largest Crystal: 
2.30cm
Weight: 
6.00gr
Description

This specimen is mostly about the pectolite crystals, which are fairly large and well formed. As shown in the first photo (the “back”) , the pectolite is somewhat encrusted, especially near the base, and one may be tempted to power clean it. Probably that would enhance the pectolite. But it would also blast away not only the light brown coatings, which are either manganese oxides or amorphous “bitumen”, but also the darker areas which are actually small pyrophanite crystals.

The best of the pyrophanite crystals are shown in the next pair of photos (FOV 3,1 x 2.3 mm). The crystals are <= 0.4 mm on edge, and you will need 30X to view them. But IMHO, blasting them away would be a mistake. Cleanliness isn’t always next to godliness. These particular pyrophanite crystals are on one of the pectolite termimations. As may or may not be clear from the photos, these terminations show interesting growth hillocks.

In addition to the pyrophanite, there also numerous apophyllite (probably fluorapophyllite-(K)) crystals on the pectoltite. The largest ones, slightly yellow in color, can be seen at the bottom of the next photo, which shows the “front” side of the specimen. These crystals span about 7mm. Much smaller, water clear, apophyllite crystals also encrust some of the pectolite terminations. In a way, they are another nuisance, but, again, this nuisance is quite attractive under a scope.

The last pair of photos is another view of both the pectolite and the apophyllite (left side and top).

Single item shipping weight 2.5 oz. For shipments outside the USA, up to a total weight of 8 oz (225 g), this could be combined with other items from this or future auctions for the same postage. If you wish to keep an “open box”, let me know.

For shipments within the USA, there is a nominal increase of about $0.20 for each additional ounce. Above 13 oz I will use “own box” Priority Mail ($8.75).

 

Mineral Data
What's on the rock

Pectolite

Formula: 
NaCa2(HSi3O9)
Strunz: 
9.DG.05
Hardness: 
4.5 - 5.0
Streak: 
White
Type Locality: 
Sano, Mori, Mt. Baldo, Lagarina Valley, Trento Province, Trentino-Alto Adige (Trentino-Südtirol), Italy

Pyrophanite

Formula: 
Mn2+TiO3
Strunz: 
4.CB.05
Hardness: 
5.0 - 6.0
Type Locality: 
Harstigen Mine, Pajsberg, Persberg district, Filipstad, Värmland, Sweden

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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