Septarian (Lightning Stone) - Lake Michigan Stone
Septarian concretion is a hard, compact mass of matter formed by the precipitation of mineral cement within the spaces between particles, and is found in sedimentary rock or soil. Concretions are often ovoid or spherical in shape, although irregular shapes also occur. The word 'concretion' is derived from the Latin con meaning 'together' and crescere meaning 'to grow'. Concretions form within layers of sedimentary strata that have already been deposited. They usually form early in the burial history of the sediment, before the rest of the sediment is hardened into rock. This concretionary cement often makes the concretion harder and more resistant to weathering than the host stratum.
There is an important distinction to draw between concretions and nodules. Concretions are formed from mineral precipitation around some kind of nucleus while a nodule is a replacement body.
Descriptions dating from the 18th century attest to the fact that concretions have long been regarded as geological curiosities. Because of the variety of unusual shapes, sizes and compositions, concretions have been interpreted to be dinosaur eggs, animal and plant fossils (called pseudofossils), extraterrestrial debris or human artifacts.
Lake Michigan Septarian is found on the beaches of the lower west side of Michigan. Consists of clay cemented onto an iron mineral called siderite. These concretions form in part through bacterial activity. They become fractured and the fractures fill with calcite brought in by ground water. The result forms lightning like patterns on a dark background.
Septarian is a superb stone to wear or carry with you if you speak in public, as it gives you confidence and allows you to gain an audience’s attention. A grounding stone, Septarian allows for better tolerance and patience, as well as emotional flexibility. It can gauge the underlying cause of an illness when meditated upon, and focuses the body into healing itself. Septarian can absorb your energy when held over a period of time and transmits that energy into strength when needed.