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(DSM #SD11 and #SD12) Concretions come in all sizes and are very often mistaken for fossils because of their intricate and strange shapes. They form when a grain of sediment or organism acts as a nucleus for minerals to precipitate and grow. Some…

(DSM #SD7) Dendrites are iron or manganese oxide mineral growths that occur in a rock after deposition.

(DSM #SD8) Geodes are crystals that form to fill a void. The outer portion of the stone is usually non-descript and plain but the crystals show themselves when the rock is hit with a hammer.

(DSM #SD13) Septarian concretions form in cavities where the outer rock is cracked and angular. Minerals fill the cracks and preserve their shape.

Photo of Public Lunch, a performance by artist Bonnie Ora Sherk

Image of Mary Mattingly during her performance piece Pull

Wood and Brass Pump Drill

Milton Coates listed as a school pupil in Vicksburg.

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