Polished Dendritic Agate - Madagascar Wand point these durable fossil specimens are

these durable fossil specimens are perfect for educational geology sets

is found on a soapstone/serpentine type  matrix

Weight: 2184g

They are excellent educational pieces for demonstrating how hydrothermal activity alters volcanic rock chemistry

Polished Dendritic Agate - Madagascar Wand point these durable fossil specimens areThis Polished Dendritic Agate is a striking mineral specimen sourced from the rich, diverse geological deposits of Madagascar. As a semi translucent variety of chalcedony quartz, this material is defined by its complex, tree like or fern like inclusions trapped inside a clear to milky silica body. These delicate structures are formed by a process known as dendritic branching, which occurs when iron and manganese rich mineral fluids seep into micro