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Dolomite (Var: Ferroan Dolomite), Baryte

Dolomite (Var: Ferroan Dolomite) : CaMg(CO3)2, Baryte : BaSO4
minID: NR6-XW5

Photo Copyright © Scott Sadlocha  - This image is copyrighted. Unauthorized reproduction prohibited.
Dimensions: 6 cm x 6 cm x 3 cm

This is a photo of a specimen of ferroan dolomite with baryte, collected on July 5th, 2009 on a my first field trip to an actual locality, the Blue Bridge (also known as the Lameraux Bridge) on the Huron River near Monroeville, Ohio. This specimen measures 6 x 6 x 3 cm, and this field of view is 5cm across.

This is the main body of a piece where I tried to pull off the bottom to expose the baryte within a small pocket, some of which were terminated, but I ended up breaking apart the crystals in the process (see other photos for the other half). This specimen is an example of the minerals common to the nodules that can break loose from the shale cliffs and fall to the riverbed below, where they can be broken up. Some of the multiple generations of dolomite can be seen in the piece.

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Photo added: 28th Mar 2010

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