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Walter R. Kellogg


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Mineral Specimen #4658    Polished Light Green Datolite Nodule

Keweenaw Peninsual, Upper Peninsula, Michigan

7.2 x 6 x 1.3 cm


Ex. Claude S. Bullen, Pre 1950, Ex. Edward Coleman

A fairly large polished Datolite nodule with a subtle yellow/green coloration. Around the edges, there are small green dots. Near one edge, there is an area with a orange tinted area. The polish is very good and thereare no cracks. Although no location is given, it resembles specimens found in the waters off Isle Royale - although it may have actually come from Isle Royale from before the establishment of the park in 1940. This is from a very old collection. Claude Selwyn Bullen was born in 1893 in Cornwall and died in Ypsilanti, Michigan in 1977. As a young man, he migrated to Michigan's Copper Country in the Keweenaw Peninsula to work as a mining engineer. He retired in 1950 and moved to Ypsilanti which is about an hour East of Detroit. His collection was sold by his daughter in an open house in 2008. Amazingly, the flyer is still on line at link to flyer I and my friend, Chris Stefano, attended the sale, arriving an hour early and waited outside in the cold with falling snow - and we were not the first in line. This particular specimen was purchased by a mineral club from suburban Detroit and later won at bid by Ed Coleman the following spring at the club's annual auction.

Condition: Very Good

Flaws: Some of the nodule is not complete on one side of the specimen.

This mineral is also found in the following galleries: Minerals From Michigan | Nesosilicates | Minerals Priced Between 200 and 299 Dollars