Scorzalite ((Fe2+ ,Mg)Al2 (OH,PO4 )2 ) is a dark blue phosphate mineral containing iron , magnesium , and aluminium phosphate . Scorzalite forms one endmember of a solid solution series with the lighter, more magnesium-rich lazulite .
Scorzalite crystallizes in the monoclinic system in a dipyramidal form. It has a Mohs hardness of 5.5–6 and a specific gravity of 3.4. It is infusible and insoluble in water, and only slightly soluble in warm hydrochloric acid .
Occurrence
It was first described in 1947 for an occurrence in the granite pegmatite in the Córrego Frio mine, Linópolis, Doce valley , Minas Gerais , Brazil . It was named for the Brazilian geologist Everisto Pena Scorza (1899–1969).[ 3]
It occurs as a secondary phase in pegmatites and kyanite (aluminium-rich) quartzites . Associated minerals include souzalite , triphylite , wyllieite , trolleite , apatite , lacroixite , berlinite , tourmaline , muscovite , feldspar and quartz .[ 2]
References
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