Discovering Float Copper: A Treasure Hunter’s Guide

Introduction

Float copper, a naturally occurring form of native copper, has fascinated treasure hunters and geologists alike for centuries. Transported by glacial activity, these copper nuggets can be found scattered across various regions, particularly in Michigan’s Upper Peninsula. In this blog post, we’ll explore what float copper is, its historical significance, and how you can find it using a metal detector.

What is Float Copper?

Float copper refers to pieces of native copper that have been moved from their original location by glacial activity. These chunks of copper, ranging from small nuggets to massive boulders, were carried by glaciers and deposited across different terrains. The term “float” comes from the way these pieces were transported, much like how driftwood floats on water.

Float copper is often identified by its bright green to black alteration crust, which consists of minerals like malachite and cuprite. These minerals form as the copper oxidizes, giving float copper its distinctive appearance ¹.

Historical Significance

The discovery of float copper has played a significant role in the history of mining and metallurgy. Native Americans were among the first to utilize float copper, crafting tools and ornaments from the metal. Later, European settlers and miners recognized the value of these deposits, leading to extensive mining operations in regions like Michigan’s Keweenaw Peninsula ².

The Keweenaw Peninsula is renowned for having the largest known deposit of native copper in the world. The region’s rich copper deposits and historical significance make it a prime location for treasure hunters seeking float copper ².

Why Use a Metal Detector?

Metal detectors are invaluable tools for locating float copper. Copper is a highly conductive metal, making it easily detectable by most metal detectors. Whether you’re a seasoned treasure hunter or a beginner, using a metal detector can significantly increase your chances of finding float copper.

Choosing the Right Metal Detector

When selecting a metal detector for finding float copper, consider the following features:

Sensitivity to Non-Ferrous Metals: Copper is a non-ferrous metal, so a detector with good sensitivity to non-ferrous targets is essential.
Manual Ground Balance: This feature allows you to adjust the detector to compensate for mineralized soils, which are common in areas where float copper is found.
Multi-Frequency Technology: Detectors with multi-frequency capabilities can provide better detection depth and accuracy.
Waterproof Design: Since float copper can be found in various environments, including wet conditions, a waterproof detector is beneficial.

Recommended Metal Detectors

Here are a few metal detectors that are well-suited for finding float copper:

Minelab Equinox 800: Known for its versatility and high sensitivity to non-ferrous metals, the Equinox 800 features Multi-IQ technology and manual ground balance ³.
Nokta Makro Simplex+: This detector is user-friendly and effective in various conditions, with VLF technology and a waterproof design ⁴.
XP Deus II: With Fast Multi-Frequency (FMF) technology and customizable programs, the Deus II is a powerful tool for detecting float copper.
Of course the above detectors are just an example. Most detectors would find this and so would a PI metal detector.

Tips for Finding Float Copper

Research Locations: Focus on areas known for glacial deposits, such as Michigan’s Upper Peninsula. Old mine tailings and glacial drift areas are prime spots.
Adjust Detector Settings: Set your detector to discriminate against iron and other less conductive metals. This will help you focus on copper targets.
Practice: Familiarize yourself with the sound and signal of copper by testing your detector with a piece of copper before heading out.
Be Patient: Finding float copper can take time and persistence. Keep searching and refining your techniques.

The Thrill of Discovery

One of the most exciting aspects of treasure hunting is the thrill of discovery. Finding a piece of float copper can be incredibly rewarding, both for its historical significance and its natural beauty. Each piece of float copper tells a story of geological processes and human history, making it a unique and valuable find.

Conclusion

Float copper hunting is a fascinating and rewarding hobby that combines the thrill of treasure hunting with the beauty of natural history. By understanding what float copper is, choosing the right metal detector, and following some practical tips, you can increase your chances of finding these remarkable pieces of native copper.

Whether you’re exploring the rich copper deposits of Michigan’s Upper Peninsula or searching in other glacial regions, the adventure of finding float copper awaits. Happy hunting!