Specimen data for Rosasite

Tom Mortimer catalog number: U450

Identification method: Field collected and identification by Bob Janules. An article by Bob Janules in the Micromounters of New England Newsletter, October, 2003, "Mascot Musings", stated: "Rosasite(?) .... A mineral that forms as blue to blue-green botryoidal crystals with a very smooth outer surface was thought to be smithsonite. Analysis showed it to be a carbonate of both copper and zinc. Because of the crystal shape rosasite is the most likely mineral that this could be. It is uncommon at this locality."
The EDS plot below is of a similar specimen from the Mascot Mine. Although this plot is from a qualitative analysis, it is the best reproducible data known to the author. The plot may be useful as a comparative reference for future analysis of specimens from this locality. Elements sodium and lighter do not give a response the instrument used. The analysis was performed by the SEM lab at the University of New Orleans on a specimen provided by Bob Janules.

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