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Crystal Information - Products Below
these minerals has the same chemical composition but differing crystal structure. These three minerals form in aluminous metamorphic rocks. The temperature and pressure are what determines which of these polymorphs will crystallize. Knowing the pressure and temperature stability field for each of these three minerals can be of significant value in understanding metamorphic terrains. Under conditions of high temperature regional metamorphism, sillimanite tends to occur from rocks of appropriate composition. Kyanite is typically found in rocks that formed under conditions of high pressure regional metamorphism. Andalusite is indicative of relatively low pressure conditions of formation, often occurring in contact metamorphic deposits. Group SILICATES, Composition Al2SiO5, Hardness 5.5-7, Crystal structure TRICLINIC
Ferroan Kyanite CrystalsRRP: £2.50
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Natural Ferroan Kyanite Crystals, Sold Singly
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Green Kyanite CrystalsRRP: £2.50
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Natural Green Kyanite Crystals, Sold Singly.
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Blue Kyanite BladesRRP: £2.50
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Natural Blue Kyanite Crystal blades Sold Singly.
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Kyanite Tumble ChipsRRP: £1.75
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Kyanite Tumbled Chips - Size: 2cm x 1.5cm x 0.3cm. Sold as Single Crystals, or Packs of 7.
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Kyanite Oval PendantRRP: £16.99
Saving: £2 (12%)
Kyanite Oval Crystal Pendant Silver Mounted. Crystal Size 1.4cm x 0.8cm. Sold Singly
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