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![Mineralogy Database Mineralogy Database](/images/Hedyphane_Crystal.gif) |
Santarosaite Mineral Data
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General Santarosaite Information
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Chemical Formula: |
CuB2O4 |
Composition: |
Molecular Weight = 149.03 gm |
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Calcium 1.34 % Ca 1.88 % CaO |
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Copper 36.67 % Cu 45.90 % CuO |
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Boron 14.87 % B 47.88 % B2O3 |
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Lead 4.17 % Pb 4.49 % PbO |
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Oxygen 42.94 % O |
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______ ______ |
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100.00 % 100.16 % = TOTAL OXIDE |
Empirical Formula: |
Cu0.86Pb0.03Ca0.05B2.05O4 |
Environment: |
From the oxidation zone of a polymetallic (silver, copper, lead) ore deposit. Natural analogue of copper metaborate. |
IMA Status: |
Approved IMA 2007 (Dana # Added) |
Locality: |
Mina Santa Rosa, Iquique, Northern Chile. Link to MinDat.org Location Data. |
Name Origin: |
Named for the mine which was named after St. Rose of Lima (1586-1617), first Catholic American saint. |
Synonym: |
IMA2007-013 |
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Santarosaite Image |
Images:
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Images:
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Santarosaite Atacamite
Comments: Encrustations of santarosaite (Cotype Specimen, MD212; blue) with atacamite (green) and anhydrite (white) on matrix. Discovered by Arturo Molina, Iquique, Chile in 2003. Holotype, sample MD 87, largely used up for the examinations.
Location: Santa Rosa Mine, Iquique, Chile.
Scale: Sample Width 3 cm.
© K.C. Lyncker, Hamburg / German Type Specimen Catalogue |
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Santarosaite Crystallography
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Axial Ratios: |
a:c = 1:0.48901 |
Cell Dimensions: |
a = 11.517, c = 5.632, Z = 12; V = 747.04 Den(Calc)= 3.97 |
Crystal System: |
Tetragonal - Scalenohedral H-M Symbol (4 2m) Space Group: I 42d; |
X Ray Diffraction: |
By Intensity(I/Io): 3.797(1), 3.638(0.47), 2.775(0.35),2.501(0.26), 2.572(0.26), 1.822(0.21), 1.793(0.2), 2.876(0.17), |
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Physical Properties of Santarosaite
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Color: |
Vivid blue. |
Diaphaneity: |
Translucent |
Habit: |
Globular - Spherical, or nearly so, rounded forms (e.g. wavellite). |
Streak: |
pale blue |
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Optical Properties of Santarosaite
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Optical Data: |
Uniaxial (?). |
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NCalc= 1.76 - from Gladstone-Dale relationship (KC = 0.1909) where Ncalc=Dcalc*KC+1 |
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Calculated Properties of Santarosaite
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Electron Density: |
Bulk Density (Electron Density)=3.76 gm/cc note: Specific Gravity of Santarosaite =3.97 gm/cc. |
Fermion Index: |
Fermion Index = 0.03 Boson Index = 0.97 |
Photoelectric: |
PESantarosaite = 84.15 barns/electron U=PESantarosaite x rElectron Density= 316.74 barns/cc. |
Radioactivity: |
GRapi = 0 (Gamma Ray American Petroleum Institute Units) Santarosaite is Not Radioactive |
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Santarosaite Classification
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Dana Class: |
24.05.02.02 (24)Borates - Anhydrous |
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(24.05)with miscellaneous formulae |
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(24.05.02)Dana Group |
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24.05.02.01 Calciborite CaB2O4 Pccn 2/m 2/m 2/m |
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24.05.02.02 Santarosaite! CuB2O4 I 42d; 4 2m |
Strunz Class: |
06.BD.05 06 - BORATES |
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06.B - Diborates |
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06.BD -Tektodiborates with tetrahedra |
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06.BD.05 Santarosaite! CuB2O4 I 42d; 4 2m |
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Other Santarosaite Information
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References: |
NAME( AmMin, v93:402) PHYS. PROP.(AmMin, v93:402) OPTIC PROP.(AmMin, v93:402) |
See Also: |
Links to other databases for Santarosaite :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - GeoScienceWorld
4 - Google Images
5 - Google Scholar
6 - MinDAT
7 - Mineralienatlas (Deutsch)
8 - Online Mineral Museum
9 - QUT Mineral Atlas
10 - Ruff.Info
Search for Santarosaite using:
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Mineral Discussion Forum from Fabre Minerals - also available in
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Print or Cut-and-Paste your Santarosaite Specimen Label here :
Santarosaite
CuB2O4
Dana No: 24.05.02.02 Strunz No: 06.BD.05
Locality:
Notes:
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