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Tschernichite

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LMB589567

Tschernichite

Ex Tschernich
Type Locality

Description Tabs

Description
Locality: 
Neer Road, Goble, Columbia County, Oregon, United States of America
Class: 
Crystals on Matrix
Size Range: 
Thumbnail (1-3cm)
Size: 
2.5 × 2 × 2.5 cm
Largest Crystal: 
0.13cm
Weight: 
9.00gr
Description

This is a very good example of rare tschernichite from the TL. The specimen is ex Tschernich.

Tschernichite is not an easy mineral to photograph – it is very reflective and often twinned. The first pair of photos (FOV 1.8 x 3.3 mm) shows some of the more isolated crystals on the specimen.

The crystals in the center are twinned in a somewhat bizarre way, as I attempted to show in the next three photos. The first two of these avoided reflections as much as possible in order to show the glassy nature of the crystals. FOV in these photos is 1.4 x 1.6 mm. The third of these photos (FOV 1.4 x 1.2 mm) uses reflections to bring out the strange morphology.

The next pair of photos shows a doubly terminated crystal 1.35 mm long. The entire cavity, shown in the last two photos, is about 9 mm long.

Note that the specimen was glued to a piece of “blackened” (more like “purpled”) Styrofoam, and comes in a TN case. with the original Tschernich label. 

Single item shipping weight is 3.2 oz (94 g). For shipments outside the USA, up to a total weight < 8 oz (225g), this can be combined with items from this or other auctions for the same postage.

Within the USA, postage increases by about $0.20 per ounce. Above 13 oz, I will use Priority Mail ($9.25 including packing).

 

Mineral Data
What's on the rock

Tschernichite

Formula: 
(Ca,Na2)[Al2Si4O12]·4-8H2O
Strunz: 
9.GF.30
Crystal System: 
Tetragonal
Hardness: 
4.5
Streak: 
white
Type Locality: 
Neer Road, Goble, Columbia Co., Oregon, USA
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.