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Walter R. Kellogg


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Mineral Specimen #2803    Stewartite

Stewart Mine, San Diego Co., California

Type Location

4.1 X 2.6 X 2.3 and 4.0 x 3.2 x 1.7


Ex. Steve Pullman, Ex. California Academy of Sciences


The Stewartite is the yellow material found on both specimens. These specimens were in a box in the Steve Pullman collection with one card for both specimens. There appear to be catalogue numbers on each specimen which have been painted over. Although the other species are not identified on the labels it is likely the blue is Strengite (or possibly Phosphosiderite), the dark material is Sicklerite. A bit of a mystery is the bronze colored fibrous material.

This mineral is also found in the following galleries: Minerals From California and Nevada | Phosphates | Rare Minerals | Minerals Priced Between 50 and 99 Dollars