Garnierite pebble; Madagascar
£6.00 – £12.00
Garnierite is the generic name for a green nickel ore which has formed as a result of lateritic weathering of the ultramafic rocks serpentinite, dunite and peridotite. It mostly consists of a mixture of various nickel and nickel-bearing magnesium layer silicates. Most appear to be in feldspar. The price has recently come down considerably.
I have yet to work with this one, but you need only look at it to see it lifts the spirits.
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