Tremolite (var: Hexagonite) (ex Shields Flynn Collection)

Gouverneur Mine, Fowler, St. Lawrence County, New York, USA
Toenail, 3.0 x 2.3 x 1.2 cm
Start Time: 07/29/2022 6:30:00 pm (CDT)
End Time: 08/06/2022 6:30:00 pm (CDT)
Auction Closed

Item Description

Here we have a lovely large thumbnail/toenail sized piece of Tremolite (var: Hexagonite) from one of the most well-known localities for the material. I think it's Interesting that this variety named "Hexagonite" is actually monoclinic, but the name stuck over the years. Originally this material was first reported from the Balmat-Edwards Zinc District in New York, but since "Hexagonite" is not a species, you can't really refer to this area as the type locality, since that designation is only for approved species. This particular piece features an 8 mm, prismatic, semi-translucent, pruplish colored crystals of Tremolite / "Hexagonite" on massive lilac colored Tremolite matrix. I'm told that this particular color is due the presence of manganese, which means it's a manganoan variety of a variety of Tremolite. The piece came labeled as coming from Balmat, not Fowler. From the collection of Shields Flynn.