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Lot # 69 - Peacock Ore ( Bornite)
| Opening Bid : | $ 5.00 |
| Pickup Instructions: | jan 25 10am |
| Start Date/Time: | 02-Mar-2026 7:00:00 AM |
| End Date/Time: | 09-Mar-2026 8:08:00 PM |
| Current bid: |
0 |
| Highest bidder: | -- |
| Bidding starts in: |
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 identifications are based solely on visual examination of the photographs provided. I do my best to describe each specimen accurately, but I am not a certified geologist, and some assessments may be incorrect. Buyers should review the images carefully and verify details independently.
Dimensions : 3 in W x 3.5 in H
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