concretionary |
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| navigate by keyword : brown design gemstone concretionary growth masses circular rings voids mineral rhodochrosite malachite form aggregates stalactitic crosssection minerals specimen stone rock circles red group grouping teamwork geology crystalline stalactite brainstorm creation create amass accumulate |
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| Concretionary mineral growth usually have circular rings like the rings of a tree when seen in cross-section. These are often formed in caves or other rock voids from the precipitation of minerals out of an evaporating fluid. Rhodochrosite and malachite are examples of this type of growth. |
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