"kentrolite" meaning in English

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  "etymology_text": "From Ancient Greek κέντρον (kéntron, “sting, spike”) (etymon of κέντρο (kéntro, “center”))+ λίθος (líthos, “stone”), because of its crystal habit.",
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        "An orthorhombic-dipyramidal mineral containing aluminum, iron, lead, magnesium, manganese, oxygen, silicon, and titanium."
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          "manganese"
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          "silicon",
          "silicon"
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          "titanium",
          "titanium"
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  "word": "kentrolite"
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