Crystal Healing: Star Hollandite
Star Hollandite crystals are Quartz (silica dioxide) crystals that contain Hollandite, a mineral oxide of manganese and barium, with possible potassium, iron and aluminium impurities. The chemical composition of Hollandite in Quartz is represented as: SiO2 + Ba(Mn4+ Mn2+)8O16. The hardness of the structure of these crystals varies, with Hollandite having a hardness of 4.0- […]
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