Natural Garnierite with Serpentine Druzy Quartz GN36

Garnierite is a green mineral that is rich in nickel and belongs to the serpentine group. Our garnierite specimens come from a nickel mine near Kendari, Southeast Sulawesi, Indonesia, where they have formed in ultramafic rocks that are rich in magnesium and iron. These rocks are thought to have formed from the mantle of the Earth and are associated with mineral deposits, including nickel laterites, which are a major source of nickel.

The ultramafic rocks in Southeast Sulawesi are estimated to be around 80-90 million years old and are part of the obducted ophiolite complex that is present in the region. Ophiolites are sequences of oceanic lithosphere that have been thrust onto continental margins, and they provide a window into the Earth's mantle and oceanic crust.

The formation of garnierite in these ultramafic rocks is a complex process that involves the interaction of various elements and fluids over a long period of time. Nickel-rich fluids are thought to have migrated through the ultramafic rocks, dissolving nickel and other elements along the way. As these fluids reached the surface, they interacted with the atmosphere and other fluids, resulting in the precipitation of nickel minerals, including garnierite.

The mineralogical analysis of many garnierite specimens has revealed that they consist mainly of serpentine minerals, such as lizardite and chrysotile, with minor amounts of other nickel-bearing minerals, including goethite, hematite, and maghemite. These minerals form intricate and fascinating patterns that make each specimen unique.

In conclusion, our garnierite specimens are not only scientifically fascinating but also tell a story about the history and geology of Southeast Sulawesi. By owning a piece of this history, you can not only enjoy the beauty and scientific intrigue of garnierite but also appreciate the geological processes that have shaped our planet over millions of years.

119 grams, 8 x 6 x 2.5 cm