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CONCRETIONS
DESCRIPTION: A Concretion is a compact mass of precipitated minerals which is commonly spherical to discoid in overall shape and is found embedded within a host rock which is common;y of a different composition.
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Figure 1 - Large Concretion growing within fine sediments. These large nodules found in northwest NY State near the Great Lakes shore are commonly Septarian in nature.
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Figure 2 - Large Concretion growing within fine sediments as for Figure 1. In the background is a Tillite
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