3pc Michigan Jacobsville Sandstone Keweenaw Peninsula Soothing Art Display 5.8LB

Description

3pc Michigan Jacobsville Sandstone
You will receive the beautiful sandstone rocks pictured above.
Handpicked specimens have a beautiful pattern.
Perfect for décor, art, and craft.
Unpolished and Natural, shaped by the Michigan Great Lakes.
Wet & Dry pictures of both sides are shown.
Size:  see photos
Total Weight:  5.8 lbs.
Dotted Sandstone Rocks:
The white spots in the red sandstone are reduction spots, which are a result of the chemistry of the sandstone and groundwater when the rock was formed. Red sandstones, like the Jacobsville, get their color from a little bit of iron in the cement that was precipitated by groundwater and holds the sand grains together into solid rock. Because of the oxygen in the atmosphere and water, most of the iron is oxidized, making it red. In a few places the iron is reduced, leaving the sandstone the white color. The iron does not get oxidized in those small zones because something in the rock used up all the oxygen before the iron could get it. Usually that something is a small bit of organic matter that was decomposing in the sand or a mineral that is more easily oxidized than iron. The area around that little bit of organic matter or mineral becomes oxygen poor, making the white reduction spots you see in those rocks.
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