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System:TetragonalColour:vivid blue
Name:For the type locality, Santa Rosa Mine, Iquique, Chile

The natural analogue of copper metaborate.

Classification of Santarosaite

IMA status:Approved 2007
Nickel-Strunz 10th (pending) edition ID:6.BD.05

B : Diborates
D : Tektodiborates with tetrahedra
Dana 8th edition ID:24.5.5.

5 : Miscellaneous
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Type Occurrence of Santarosaite

Type Locality:Santa Rosa Mine, Santa Rosa-Huantajaya District, Iquique Province, Tarapacá Region, Chile
General Appearance of Type Material:globules to 60 microns in size
Place of Conservation of Type Material:Mineralogical Museum of the University of Hamburg, Germany
Year of Discovery:2003
Associated Minerals at type locality:

Physical Properties of Santarosaite

Colour:vivid blue
Streak:pale blue
Density (calculated):3.96 g/cm3

Crystallography of Santarosaite

Crystal System:Tetragonal
Class (H-M):4 2m - Scalenohedral
Space Group:I4 2d
Cell Parameters:a = 11.517(8) Å, c = 5.632(6) Å
Ratio:a:c = 1 : 0.489
Unit Cell Volume:V 747.1 ų
Morphology:globular aggregates of tiny leaf-like crystallites less than 1 micron thick.
X-Ray Powder Diffraction:
3.707 (100)
3.638 (47)
2.876 (17)
2.775 (35)
2.572 (26)
2.501 (26)
1.822 (21)
1.793 (20)

Chemical Properties of Santarosaite

Simplified for copy/paste:CuB2O4
All elements listed in formula:B, Cu, O
Analytical Data:Average of 15 analyses (electron microprobe). The low total is assumed to originate from structural reasons (the very small size of the crystallites) and not "analytical failures".
CuO (43.24)
PbO (4.48)
CaO (0.97)
B203 (45.44)
Total (94.13)
Common Impurities:Pb,Ca

Other Names for Santarosaite

Other Languages:
Simplified Chinese:硼铜石

Other Information

Fluorescence in UV light:not observed
Other Information:not soluble in water, but in HCl
Health Warning:No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.

References for Santarosaite

Reference List:

- +
Schlüter, J., Pohl, D., Golla-Schindler, U. (2008): Santarosaite, CuB2O4, a new mineral with disordered structure from the Santa Rosa mine, Atacama desert, Chile. Neues Jahrbuch für Mineralogie - Abhandlungen, 185, 27-32.

Internet Links for Santarosaite

Search Engines:
  • Look for Santarosaite on Google
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  • External Links:
  • Look for Santarosaite on Webmineral
  • Look for Santarosaite on Athena Mineralogy
  • Look for Santarosaite on Mineralien Atlas
  • Raman and XRD data at RRUFF project
  • American Mineralogist Crystal Structure Database
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  • Santarosaite specimens for sale - minfind.com
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  • Search for Santarosaite on Well-Arranged Molecules
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  • SpiriferMinerals.com - high quality low prices
  • Localities for Santarosaite

    The map shows a selection of localities that have latitude and longitude coordinates recorded. Click on the symbol to view information about a locality. The symbol next to localities in the list can be used to jump to that position on the map.
    (TL) indicates type locality. ? indicates mineral may be doubtful at this locality. All other localities listed without reference should be considered as uncertain and unproven until references can be found.
    • Tarapacá Region
      • Iquique Province
        • Santa Rosa-Huantajaya District
    Schlüter, J., Pohl, D., Golla-Schindler, U. (2008): Santarosaite, CuB2O4, a new mineral with disordered structure from the Santa Rosa mine, Atacama desert, Chile. Neues Jahrbuch für Mineralogie - Abhandlungen, 185, 27-32.
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