Septarian

The term septarian comes from the Latin "separare = to separate, to separate". It has been used since the 18th century for roundish concretions in sedimentary rocks when these are internally fissured. There are no synonyms for septarian.

Important occurrences are found in Utah/USA and Madagascar.

The colour of the concretion itself is grey, calcite inside is mostly yellow.


Mineral class of the phyllosilicates
Formula: general formula of the phyllosilicates + calcite

Mohs hardness: 3
Density: 2.6 - 2.7
Cleavability: none, uneven fracture
Stroke colour: white, grey, yellowish, brownish
Transparency: opaque, translucent

Healing properties
Accessibility, dissolves repressive mechanisms, helps to remain steadfast in difficult situations.