Garnierite Riddle Mine, Riddle, Riddle Mining District, Douglas County, Oregon, USA Dimensions: 4.1 × 2.5 × 1.4 cm Collector's Note: Garnierite isn't a single IMA-approved mineral species; at Riddle it's a nickel-rich silicate mixture, and published work found the material to be largely poorly crystalline serpentine-group material with quartz.
A classic Oregon Garnierite specimen featuring a broad surface of soft mint to pale apple-green nickel-rich silicate material covered by striking black dendritic growths. The finely branching dendrites create excellent contrast against the green groundmass, while areas of tan-brown host rock remain around the margins. An especially attractive example of this historic nickel-ore material from the Riddle Mining District.
✔ $6.95 Flat Rate Standard Shipping to USA- Expedited available for additional fee
✔ Free USA Shipping Over $100
✔ Insurance Included
Returns
✔ Online sales: 14-Day Easy Returns for online purchases (prepaid US label, International returns customer paid label)
✔ In Store sales: We allow exchanges within 14 days of purchase; specimens are final sale and cannot be exchanged
Need to start a return?
We are happy to partner with Aftership Returns to provide a worry-free return experience for online purchases. If you need to return a product, please visit here to begin a return.
Choosing a selection results in a full page refresh.
