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Sanjuanite Mineral Data |
General Sanjuanite Information |
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Al2(PO4)(SO4)(OH)•9(H2O) | ||
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Molecular Weight = 424.14 gm | ||
Aluminum 12.72 % Al 24.04 % Al2O3 | |||
Phosphorus 7.30 % P 16.73 % P2O5 | |||
Hydrogen 4.52 % H 40.35 % H2O | |||
Sulfur 7.56 % S 18.88 % SO3 | |||
Oxygen 67.90 % O | |||
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100.00 % 100.00 % = TOTAL OXIDE | |||
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Al2(PO4)(SO4)(OH)•9(H2O) | ||
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Approved IMA 1968 | ||
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Sierra Chica de Zonda, San Juan Province, Argentina. Link to MinDat.org Location Data. | ||
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Named for the locality. | ||
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Sanjuanite + Pronunciation ![]() |
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Sanjuanite Image | |||
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Sanjuanite Crystallography |
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a:b:c =1.2546:1:0.8179 | ||
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a = 11.314, b = 9.018, c = 7.376, Z = 2; alpha = 93.07°, beta = 95.78°, gamma = 105.32° V = 721.10 Den(Calc)= 1.95 | ||
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Triclinic Space Group: P1 or P1 | ||
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By Intensity(I/Io): 10.77(1), 4.13(0.55), 5.28(0.38), | ||
Physical Properties of Sanjuanite |
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None | ||
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White. | ||
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1.94 | ||
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Earthy - Dull, clay-like fractures with no visible crystalline affinities, (e.g. howlite). | ||
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Massive - Uniformly indistinguishable crystals forming large masses. | ||
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3 - Calcite | ||
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Silky | ||
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white | ||
Optical Properties of Sanjuanite |
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CI meas= -0.009 (Superior) - where the CI = (1-KPDmeas/KC) CI calc= 0.001 (Superior) - where the CI = (1-KPDcalc/KC) KPDcalc= 0.2508,KPDmeas= 0.2534,KC= 0.251 Ncalc = 1.49 |
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Biaxial (?), a=1.484, g=1.499, bire=0.0150 | ||
Calculated Properties of Sanjuanite |
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Bulk Density (Electron Density)=2.03 gm/cc note: Specific Gravity of Sanjuanite =1.96 gm/cc. |
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Fermion Index = 0.0008997025 Boson Index = 0.9991002975 |
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PESanjuanite = 1.28 barns/electron U=PESanjuanite x rElectron Density= 2.60 barns/cc. |
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GRapi = 0 (Gamma Ray American Petroleum Institute Units) Sanjuanite is Not Radioactive |
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Sanjuanite Classification |
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43.05.01.03 (43)Compound Phosphates, etc. | ||
(43.05)(Hydrated Compound Anions With Hydroxyl or Halogen) | |||
(43.05.01)Sarmientite Group | |||
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08.DB.30 08 - PHOSPHATES, ARSENATES, VANADATES | ||
08.D - Phosphates, etc | |||
08.DB -With only medium-sized cations, (OH, etc.):RO4 < 1:1 | |||
Other Sanjuanite Information |
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NAME( Dana8) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Enc. of Minerals,2nd ed.,1990) | ||
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Links to other databases for Sanjuanite : 1 - Am. Min. Crystal Structure Database 2 - Athena 3 - EUROmin Project 4 - Ecole des Mines de Paris 5 - GeoScienceWorld 6 - Google Images 7 - Google Scholar 8 - Handbook of Mineralogy (MinSocAm) 9 - Handbook of Mineralogy (UofA) 10 - MinDAT 11 - Mineralienatlas (Deutsch) 12 - Online Mineral Museum 13 - QUT Mineral Atlas 14 - Ruff.Info Search for Sanjuanite using: Visit our Advertisers for Sanjuanite : Ask about Sanjuanite here : Print or Cut-and-Paste your Sanjuanite Specimen Label here :
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