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Cookeite

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LMB175552

Cookeite

Description Tabs

Description
Locality: 
Bennett Quarry, Buckfield, Oxford County, Maine, United States of America
Size Range: 
Small miniature (3-4.5 cm)
Size: 
2.1 × 3.2 × 1.7 cm
Description

Foliated orange cookeite aggregates spanning 4.8 x 2.7 mm. The aggregates have a characteristic appearance that reminds me of an old fashioned Rolodex. The top of this aggregate is a smooth contact with former cleavelandite. The cavity also has minor lepidolite, quartz and (possibly) manganotantalite (bottom of second close-up) and etched apatite. The second close-up is a (sort of) top view of the aggregates.

This quarry is well known for cookeite.

Weight 0.5 oz. Single item shipping weight 2.8 oz. Up to 4 oz, this can be combined with other items for the same postage.

Mineral Data
What's on the rock

Cookeite

Formula: 
(Al2Li)Al2(AlSi3O10)(OH)8
Strunz: 
9.EC.55
Hardness: 
2.5 - 3.5
Streak: 
White
Type Locality: 
Mount Mica Quarry (Mount Mica Mine), Paris, Oxford Co., Maine, USA
LMB minerals

Seller Information

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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.