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Margarite

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LMB171096

Margarite

Description Tabs

Description
Locality: 
Franklin, Sussex County, New Jersey, United States of America
Size Range: 
Thumbnail (1-3cm)
Size: 
2.4 × 2.5 × 1.1 cm
Description

A small (easy to mail) sample of blue-green margarite. Margarite is a fairly uncommon mica, perhaps best known from the Chester Emery mines in Massachusetts. The blue-green color typical of margarite from the Franklin (Farber) quarry (not mine!) is apparently unusual, but the color is attested to by Dunn in his “Franklin and Sterling Hill, New Jersey …” monograph.

The margarite is associated with pyrite and dark brown “phlogopite” (likely “fluoro”).

Weight 0.5 oz. This could be sent in a padded envelope for $7 (less in the USA).

Mineral Data
What's on the rock

Margarite

Formula: 
CaAl2(Al2Si2O10)(OH)2
Strunz: 
9.EC.30
Hardness: 
4.0
Type Locality: 
Großer Greiner, Zemmgrund, Zillertal, North Tyrol, Tyrol, Austria
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.