17.5 Riebeckite (blue) with pyrite and quartz. Laytonville Quarry, California.

Image 49 of 149

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17.5 Riebeckite (blue) with pyrite and quartz. Laytonville Quarry, California.

17.5 Riebeckite (blue) with pyrite and quartz. Laytonville Quarry, California.

Image 49 of 149

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