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Walter R. Kellogg


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Mineral Specimen #3377    Hexagonite (variety of Tremolite)

Balmat-Edwards Zinc District, St Lawrence County, New York, USA

This specimen is composed of a mass of purple colored Tremolite crystals. The largest crystals are gemmy and have the best color. Hexagonite was originally considered a distinct mineral and afterwards considered a hexagonal form of Tremolite. It has been shown to be pseudo-hexagonal and is actually monoclinic. The color is due to manganese. This is an older specimen from a collection from suburban Detroit and appears to have been self collected by the collector in the 1960s (there were a number of specimens of varying sizes wrapped in newspapers from 1962). The specimen is in good condition although the vast majority of the crystals are not terminated.

14 x 7.6 x 6.1 cm


This mineral is also found in the following galleries: Minerals From New York, New Jersey and New England | Inosilicates | Minerals Priced Between 50 and 99 Dollars