What beam distance is sufficient for UV flashlights in rock hunting?

Based on the information available, UV flashlights for rock hunting typically have beam distances ranging from about 10 feet (3 meters) to 70 feet (21 meters). The sufficient beam distance depends on your specific needs:

- For close-range examination of rocks and minerals, a shorter beam distance (10-15 feet) might be sufficient. This is suitable for detailed inspection of specific areas or samples.

- For covering larger areas or examining rock formations from a distance, a longer beam distance (30-70 feet) would be more useful. This allows you to survey broader areas and identify fluorescent minerals from farther away.

Some specific examples include:
- I0D0 60W UV Torch with a beam distance of 70 feet in the dark.
- 20W I0D0 UV Flashlight with a beam distance of 15 meters (about 49 feet).
- I0D0 10W UV flashlight** with a maximum hunting distance of 10 to 15 feet in the dark.

The choice ultimately depends on whether you need to examine specific areas up close or survey larger areas for potential fluorescent minerals.

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