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Sailaufite Mineral Data
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General Sailaufite Information
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 Chemical Formula: |
Ca2Mn3O2(AsO4)2(CO3)•3(H2O) |
| Composition: |
Molecular Weight = 650.52 gm |
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Sodium 1.41 % Na 1.91 % Na2O |
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Calcium 8.63 % Ca 12.07 % CaO |
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Manganese 23.65 % Mn 33.98 % Mn2O3 |
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Arsenic 24.19 % As 37.10 % As2O5 |
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Hydrogen 0.93 % H 8.31 % H2O |
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Carbon 1.85 % C 6.77 % CO2 |
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Oxygen 39.35 % O |
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______ ______ |
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100.00 % 100.12 % = TOTAL OXIDE |
| Empirical Formula: |
Ca1.4Na0.4Mn3+2.8As2.1O10(CO3)•3(H2O) |
| Environment: |
Late-stage hydrothermal product in veins of Mn ore in a rhyolite. (Mitridatite type) |
| IMA Status: |
Approved IMA 2003 (Dana # Added) |
| Locality: |
Hartkoppe hill, Ober-Sailauf (Spessart mountains) Germany. Link to MinDat.org Location Data. |
| Name Origin: |
Named for the locality |
| Synonym: |
IMA2000-005 |
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Sailaufite Crystallography
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| Axial Ratios: |
a:b:c =0.5733:1:0.455 |
| Cell Dimensions: |
a = 11.253, b = 19.628, c = 8.932, Z = 6; beta = 100.05° V = 1,942.57 Den(Calc)= 3.34 |
| Crystal System: |
Monoclinic - Domatic H-M Symbol (m) Space Group: Cm |
| X Ray Diffraction: |
By Intensity(I/Io): 8.796(1)(001), 2.9342(0.75)(003), 2.2016(0.55)(004),2.7702(0.36)(400), 5.6524(0.31)(130), 2.816(0.24), 2.886(0.23), |
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Physical Properties of Sailaufite
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| Cleavage: |
{001} Perfect |
| Color: |
Dark red brown, Black. |
| Diaphaneity: |
Translucent |
| Fracture: |
Brittle - Subconchoidal - Brittle frature with subconchoidal fragments |
| Habit: |
Mammillary - Larger "breast-like" rounded forms resembling botryoidal (e.g. malachite). |
| Habit: |
Tabular - Form dimensions are thin in one direction. |
| Hardness: |
3.5 - Copper Penny |
| Luster: |
Vitreous (Glassy) |
| Streak: |
brown |
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Optical Properties of Sailaufite
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| Gladstone-Dale: |
CI calc= -0.006 (Superior) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2352,KC= 0.2339
Ncalc = 1.78 |
| Optical Data: |
Biaxial (-), a=1.757, b=1.8, g=1.8, bire=0.0430 |
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Calculated Properties of Sailaufite
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| Electron Density: |
Bulk Density (Electron Density)=3.20 gm/cc
note: Specific Gravity of Sailaufite =3.34 gm/cc.
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| Fermion Index: |
Fermion Index = 0.0005098275
Boson Index = 0.9994901725 |
| Photoelectric: |
PESailaufite = 23.62 barns/electron
U=PESailaufite x rElectron Density= 75.60 barns/cc.
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| Radioactivity: |
GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Sailaufite is Not Radioactive |
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Sailaufite Classification
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| Dana Class: |
42.08.05.03 (42)Hydrated Phosphates, etc., Containing Hydroxyl or Halogen |
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(42.08)where (AB)7 (XO4)4 Zq � x(H2O) |
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(42.08.05)Kolfanite Group |
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42.08.05.01 Kolfanite Ca2Fe3O2(AsO4)3•2(H2O) A2/a 2/m |
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42.08.05.02 Pararobertsite Ca2Mn3(PO4)3O2•3(H2O) P 21/c 2/m |
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42.08.05.03 Sailaufite! Ca2Mn3O2(AsO4)2(CO3)•3(H2O) Cm m |
| Strunz Class: |
08.DH.30 08 - PHOSPHATES, ARSENATES, VANADATES |
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08.D - Phosphates, etc |
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08.DH -With large and medium-sized cations, (OH, etc.):RO4 < 1:1 |
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08.DH.30 Arseniosiderite Ca2Fe3(AsO4)3O2•3(H2O) A2/a 2/m |
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08.DH.30 Pararobertsite Ca2Mn3(PO4)3O2•3(H2O) P 21/c 2/m |
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08.DH.30 Kolfanite Ca2Fe3O2(AsO4)3•2(H2O) A2/a 2/m |
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08.DH.30 Lunokite (Mn,Ca)(Mg,Fe,Mn)Al(PO4)2(OH)•4(H2O) P bca 2/m 2/m 2/m |
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08.DH.30 Robertsite Ca6Mn9(PO4)9O6(H2O)6•3(H2O) A2/a 2/m |
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08.DH.30 Mitridatite Ca2Fe3(PO4)3O2•3(H2O) A2/a 2/m |
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08.DH.30 Sailaufite! Ca2Mn3O2(AsO4)2(CO3)•3(H2O) Cm m |
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Other Sailaufite Information
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| References: |
NAME( AmMin, v 88, p 250) PHYS. PROP.(AmMin, v 88, p 250) OPTIC PROP.(AmMin, v 88, p 250) |
| See Also: |
Links to other databases for Sailaufite :
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
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Print or Cut-and-Paste your Sailaufite Specimen Label here :
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Sailaufite
Ca2Mn3O2(AsO4)2(CO3)•3(H2O)
Dana No: 42.08.05.03 Strunz No: 08.DH.30
Locality:
Notes:
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