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Kotoite is a mineral composed of magnesium borate, with the chemical formula Mg3(BO3)2. It belongs to the broader category of borate minerals, which are naturally occurring compounds of boron and oxygen. Kotoite is typically found in metamorphic carbonate-rich environments, formed by the alteration of surrounding rocks due to heat and pressure. These types of borates often contain BO3 triangular units bonded with small metal ions like magnesium.12

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  1. kotoite
  2. borate mineral

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