Souzalite

minerals

scorzalite

gormanite

tapiolite

Formula: Mg3Al4(PO4)4(OH)6.2H2O
Hydrated phosphate containing hydroxyl, forms a series with gormanite
Specific gravity: 3.087
Hardness: 5½ to 6
Streak: Pale green
Colour: Blue-green, dark grey-green
Solubility: Soluble with difficulty in hydrochloric acid
Environments

Pegmatites
Sedimentary environments
Metamorphic environments
Hydrothermal environments

Souzalite occurs as a rare hydrothermal alteration product of scorzalite in complex zoned granite pegmatites, in sedimentary phosphate nodules, and in high-pressure kyanite deposits. Souzalite is associated with scorzalite (HOM).

Localities

At the type locality, the Córrego Frio mine, Linópolis, Divino das Laranjeiras, Minas Gerais, Brazil, souzalite is a hydrothermal alteration product of, and more abundant than, scorzalite in the pegmatite. The mineral assemblage includes albite, muscovite, quartz, apatite, zircon and tapiolite (AM 33.205).

At Rapid Creek, Dawson mining district, Richardson Mountains, Canada, souzalite occurs with gormanite (Dana).

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