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SEP114 Septarian Slab

SEP114 Septarian Slab

$32.00

Sep 114:  Septarian Concretion Slab –   Locality: – Utah.  Selection: Polished and rough.

Appearance: Cavity filled minerals – Yellow Calcite center, Brown Aragonite boarder. UV Fluorescent. Has a slight heart shape.

Approximate Measurements: 6 1/8 x 5/8″ x 4 5/8″

Availability: Single item, exclusive.

In stock

Description

Septarian, also known as a type of Concretion, is a volume of sedimentary rock in which a mineral cement fills the porosity.  Concretions are often ovoid or spherical in shape.  They form within layers of sedimentary strata that has already been deposited.  It is composed of a Carbonate mineral such as Calcite, a Silica such as Chert, Flint or Jasper or an Iron Oxide such as Goethite or Hematite.  It is commonly found in Shale, Siltstones and Sandstones.

 

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