Several blue colored sub-mmi spheres of Santarosaite are arranged on the surface of this sample.
The santarosaite is a very rare copper borate, found for now only in this locality, which is therefore the type locality.
Formula :
CuB2O4
System: tetragonal Hardness:3.96 Rarity:very rare
Strunz id:VI -
SULFATES, CHROMATES, MOLYBDATES and TUNGSTATES
Name origin: For the type locality, Santa Rosa Mine, Iquique, Chile.
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 Specimen weight:15 gr.
 Crystal size:sub-mm
 Overall size: 35mm x 30 mm x 11 mm
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