You can find those things out. Natural ore means it comes from natural deposits (its not a lab-formulated compound).
Some people prefer natural ingredients. Thats it.
Otherwise its very common with synthetic or refined chemical ingredients in toothpaste, like:
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Sodium fluoride / stannous fluoride (lab-produced, though based on natural elements)
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Artificial abrasives (engineered silica)
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Detergents like sodium lauryl sulfate (SLS)
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Synthetic preservatives, flavors, or colorants
Same reason people want to grow their own food. They know whats in it and what they put in their body.