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Mn2+3Al2(SiO4)3
Amethyst grading is based on colour saturation
Peru (Stand Included) Collector Piece
nicely demarcated crystals reaching a size of up to 9 mm
Well crystallized Pyrrhotite specimens are important collectors minerals
Stunning Green Augelite With Quartz From Peru (Stand Included) Collectors Piece lavender Mn2+3Al2(SiO4)3Stunning Green Augelite With Quartz From Peru (Stand Included) Collectors Piece Weight 25g Size 3. 5cm by 3cm Thickness 1. 5cm Augelite is an aluminium phosphate mineral with formula: Al2(PO4)(OH). It is a rare mineral that forms as a result of hydrogen metamorphism of phosphate rocks in peraluminous sediment and in high temperature hydrothermal ores. The shade varies from colourless to white, yellow or rose. Its crystal system is monoclinic. It is