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Borate

Santarosaite

CuB₂O₄
Crystal systemTetragonal
ClassBorate
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Santarosaite specimen

Santarosaite Locality: Santa Rosa Mine, Santa Rosa-Huantajaya District, Iquique Province, Tarapacá Region, Chile Tiny deep blue Santarosaite globules from the TL. Field of view; 3 mm. Specimen and photo Leon Hupperichs — Photo: Leon Hupperichs · CC BY-SA 3.0

Santarosaite

Santarosaite is an IMA-recognized mineral species in the borate class, with the chemical formula CuB₂O₄.

It crystallizes in the tetragonal crystal system (space group I-42d).

Key properties: specific gravity 3.96; Pale blue streak; Vitreous luster.

IMA symbol Srs, IMA status: approved, named in 2007.

Found in the oxidation zone of a hydrothermal polymetallic vein deposit.

It is found associated with Atacamite, malachite, wulfenite, anhydrite.

The name refers to the mine that yielded the first specimens.

Index entry. This entry combines official IMA/RRUFF species data with published physical-property data — a full written entry hasn’t been published yet. Browse more S minerals or help write this entry.