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Lot # 69 - Peacock Ore ( Bornite)
| Opening Bid : | $ 5.00 |
| Pickup Instructions: | |
| Start Date/Time: | 02-Mar-2026 7:00:00 AM |
| End Date/Time: | 09-Mar-2026 8:10:00 PM |
| Current bid: |
$8.00 |
| Highest bidder: | Wisewillow |
Auction has ended |
|
Description :
Bornite is a copper iron sulfide mineral and an important copper ore. Freshly broken material is usually a dark, bronzy brown, but it quickly tarnishes into those brilliant metallic colors. The rainbow effect comes from thin‑film oxidation on the surface. As the mineral reacts with oxygen, microscopic layers form that reflect light in different wavelengths, producing: Purples Blues Golds Sometimes greens and pinks This tarnish is natural and part of its charm. Metallic luster Iridescent tarnish (its signature look) Relatively soft for a metallic mineral (Mohs ~3) Often massive or chunky rather than well‑formed crystals Bornite occurs in many copper‑rich deposits around the world, including: Arizona and Montana (USA) Mexico Peru Namibia Australia The colors are eye‑catching and unique It’s a great teaching specimen for sulfide minerals It’s historically important as a copper ore Each piece develops its own pattern of iridescence over timeWhat Bornite Is
Why It Looks So Colorful
Key Traits
Where It’s Found
Why People Collect It
Disclaimer: All gemstone and mineral descriptions are provided to the best of our ability based on visual assessment and available information. None of the stones in this auction have been GIA‑certified or professionally graded. The winning bidder is welcome to have any stone independently certified, graded, or appraised at their own expense. All items are sold as‑is.
Dimensions : 3 in W x 3.5 in H
Auction History
Highest bidder is Wisewillow
| Date | Bid | User |
|---|---|---|
| 09-Mar-2026 8:06:11 PM | $8.00 | Wisewillow |
| 09-Mar-2026 8:06:11 PM | $7.00 | GSSpence |
| 09-Mar-2026 11:54:27 AM | $5.00 | Wisewillow |
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