The Olivine River is a river in northern Fiordland, New Zealand. It rises north of the Cow Saddle and flows north, then north-west over Olivine Falls to become a tributary of the

Pyke River The Pyke River is a river in the south west of New Zealand's South Island. It flows generally south into Lake Wilmot then Lake Alabaster, before becoming a tributary of the Hollyford River. See also *List of rivers of New Zealand This is a li ...

near Olivine Hut. The Five Passes hiking (

tramping Tramping may refer to: Travel *Hiking *Trekking *Tramping in New Zealand, a style of backpacking or hiking * Czech tramping, a Czech outdoors pastime Places * Rural Municipality of Tramping Lake No. 380, Saskatchewan, Canada ** Tramping Lake, Sas ...

) trail passes through the upper river near Cow Saddle. The

Dun Mountain Ophiolite Belt The Dun Mountain-Maitai Terrane comprises the Dun Mountain Ophiolite Belt (also called the Mineral Belt), Maitai Group and Patuki Mélange. The Dun Mountain Ophiolite is an ophiolite of Permian age located in New Zealand's South Island. Prehistori ...

which is rich in the mineral

olivine The mineral olivine () is a magnesium iron silicate with the chemical formula . It is a type of nesosilicate or orthosilicate. The primary component of the Earth's upper mantle, it is a common mineral in Earth's subsurface, but weathers quickl ...

outcrops extensively in the Olivine River and its tributaries.

References

Rivers of Fiordland {{Fiordland-river-stub