Sailaufite Mineral Data

General Sailaufite Information

Chemical Formula:

Ca2Mn3O2(AsO4)2(CO3)•3(H2O)

Composition:

Molecular Weight = 650.52 gm

Sodium 1.41 % Na 1.91 % Na₂O

Calcium 8.63 % Ca 12.07 % CaO

Manganese 23.65 % Mn 33.98 % Mn₂O₃

Arsenic 24.19 % As 37.10 % As₂O₅

Hydrogen 0.93 % H 8.31 % H₂O

Carbon 1.85 % C 6.77 % CO₂

Oxygen 39.35 % O

______ ______

100.00 % 100.12 % = TOTAL OXIDE

Empirical Formula:

Ca_1.4Na_0.4Mn³⁺_2.8As_2.1O₁₀(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

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 - DomaticH-M Symbol (m) Space Group: Cm

$Help on X Ray Diffraction:$ X Ray Diffraction:

By Intensity(I/I_o): 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),

Crystal Structure:

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Wildner M , Tillmanns E , Andrut M , Lorenz J , European Journal of Mineralogy , 15 (2003) p.555-564

Physical Properties of Sailaufite

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

Optical Properties of Sailaufite

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

Calculated Properties of Sailaufite

Electron Density:

Bulk Density (Electron Density)=3.20 gm/cc
note: Specific Gravity of Sailaufite =3.34 gm/cc.

Fermion Index:

Fermion Index = 0.0005098275
Boson Index = 0.9994901725

Photoelectric:

PE_Sailaufite= 23.62 barns/electron
U=PE_Sailaufite x rElectron Density= 75.60 barns/cc.

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Sailaufite is Not Radioactive

Sailaufite Classification

Dana Class:

42.08.05.03 (42)Hydrated Phosphates, etc., Containing Hydroxyl or Halogen

(42.08)where (AB)7 (XO4)4 Zq · x(H2O)

(42.08.05)Kolfanite Group

42.08.05.01 Kolfanite Ca2Fe3O2(AsO4)3•2(H2O) A2/a 2/m

42.08.05.02 Pararobertsite Ca2Mn3(PO4)3O2•3(H2O) P 2₁/c 2/m

42.08.05.03 Sailaufite! Ca2Mn3O2(AsO4)2(CO3)•3(H2O) Cm m

Strunz Class:

08.DH.30 08 - PHOSPHATES, ARSENATES, VANADATES

08.D - Phosphates, etc

08.DH -With large and medium-sized cations, (OH, etc.):RO4 < 1:1

08.DH.30 Arseniosiderite Ca2Fe3(AsO4)3O2•3(H2O) A2/a 2/m

08.DH.30 Pararobertsite Ca2Mn3(PO4)3O2•3(H2O) P 2₁/c 2/m

08.DH.30 Kolfanite Ca2Fe3O2(AsO4)3•2(H2O) A2/a 2/m

08.DH.30 Lunokite (Mn,Ca)(Mg,Fe,Mn)Al(PO4)2(OH)•4(H2O) P bca 2/m 2/m 2/m

08.DH.30 Robertsite Ca6Mn9(PO4)9O6(H2O)6•3(H2O) A2/a 2/m

08.DH.30 Mitridatite Ca2Fe3(PO4)3O2•3(H2O) A2/a 2/m

08.DH.30 Sailaufite! Ca2Mn3O2(AsO4)2(CO3)•3(H2O) Cm m

Other Sailaufite Information

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 :

Sailaufite

Ca2Mn3O2(AsO4)2(CO3)•3(H2O)
Dana No: 42.08.05.03 Strunz No: 08.DH.30
Locality:

Notes: