Trattnerite Mineral Data

Trattnerite Mineral Data

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General Trattnerite Information

Chemical Formula:

(Fe,Mg)2(Mg,Fe)3(Si12O30)

Composition:

Molecular Weight = 1,017.34 gm

Potassium 0.27 % K 0.32 % K₂O

Sodium 0.07 % Na 0.09 % Na₂O

Magnesium 5.88 % Mg 9.75 % MgO

Titanium 0.05 % Ti 0.08 % TiO₂

Manganese 0.43 % Mn 0.56 % MnO

Aluminum 0.11 % Al 0.20 % Al₂O₃

Zinc 0.32 % Zn 0.40 % ZnO

Iron 12.57 % Fe 2.12 % FeO / 15.62 % Fe₂O₃

Silicon 33.13 % Si 70.87 % SiO₂

Oxygen 47.18 % O

______ ______

100.00 % 100.01 % = TOTAL OXIDE

Empirical Formula:

K_0.07Na_0.03Mg_2.46Fe³⁺_1.99Fe²⁺_0.3Mn²⁺_0.08Zn_0.05Al_0.04Ti_0.01Si₁₂O₃₀

Environment:

In small cavities of a silica-rich xenolith in a haüyne nephelinite lava flow. Milarite group; structure determined

IMA Status:

Approved IMA 2004 (Dana # Added)

Locality:

In a quarry near the village of Wilhelmsdorf, south-southeast of Bad Gleichenberg, eastern Styria, Austria Link to MinDat.org Location Data.

Name Origin:

Named for Walter Trattner, a mineral collector with excellent knowledge of the mineralogy of the area in which the species was found.

Synonym:

IMA2002-002

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Trattnerite Crystallography

Axial Ratios:

a:c = 1:1.42666

Cell Dimensions:

a = 10.05, c = 14.338, Z = 2; V = 1,254.16 Den(Calc)= 2.69

Crystal System:

Hexagonal - Dihexagonal DipyramidalH-M Symbol (6/m 2/m 2/m) Space Group: P 6/mcc

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

By Intensity(I/I_o): 7.17(1)(002), 8.7(0.97)(100), 5.535(0.96)(102),3.207(0.85)(211), 5.026(0.61)(110), 4.352(0.53)(200), 2.767(0.38)(204), 4.115(0.37)(112),

Crystal Structure:

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Postl W , Walter F , Ettinger K , Hauzenberger C , Bojar H P , European Journal of Mineralogy , 16 (2004) p.375-380, Trattnerite, (Fe,Mg)2(Mg,Fe)3[Si12O30], a new mineral of the milarite group:, mineral data and crystal structure, Sample: tr1, Note: X-coordinate of A site adjusted to match reported bond lengths and Figure 3

View Additional jPOWD Structure files for Trattnerite
[1]

Physical Properties of Trattnerite

Cleavage:

[001] Good, [100] Poor

Color:

Deep blue, Yellowish green.

Diaphaniety:

Translucent

Fracture:

Brittle - Generally displayed by glasses and most non-metallic minerals.

Habit:

Prismatic - Crystals Shaped like Slender Prisms (e.g. tourmaline).

Luster:

Vitreous (Glassy)

Streak:

white

Optical Properties of Trattnerite

Gladstone-Dale:

CI calc= 0.004 (Superior) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2184,KC= 0.2194

Optical Data:

Uniaxial (-), e=1.586, w=1.589, bire=0.0030.

Calculated Properties of Trattnerite

Electron Density:

r_electron=2.66 gm/cc
note: r_Trattnerite=2.69 gm/cc.

Fermion Index

Fermion Index = 0.02443
Boson Index = 0.97557

Photoelectric:

PE_Trattnerite= 5.42 barns/electron
U=PE_Trattnerite x r_electron= 14.40 barns/cc.

Radioactivity:

GRapi = 3.86 (Gamma Ray American Petroleum Institute Units)

Estimated Radioactivity from Trattnerite - barely detectable

Trattnerite Classification

Dana Class:

63.2.1a.17 (63)Cyclosilicate Condensed Rings

(63.2)Milarite - Osumilite type (6x2) Double Rings

(63.2.1a)Milarite - Osumilite group (Milarite - Osumilite subgroup)

63.2.1a.1 Brannockite KSn2Li3Si12O30 P 6/mcc 6/m 2/m 2/m

63.2.1a.2 Chayesite K(Mg,Fe)4Fe(Si12O30) P 6/mcc 6/m 2/m 2/m

63.2.1a.3 Darapiosite KNa2Zr[Li(Mn,Zr)2Si12O30] P 6/mcc 6/m 2/m 2/m

63.2.1a.4 Eifelite KNa3Mg4Si12O30 P 6/mcc 6/m 2/m 2/m

63.2.1a.5 Merrihueite (K,Na)2(Fe,Mg)5Si12O30 P 6/mcc 6/m 2/m 2/m

63.2.1a.6 Osumilite-(Fe) (K,Na)(Fe,Mg)2(Al,Fe)3(Si,Al)12O30 P 6/mcc 6/m 2/m 2/m

63.2.1a.7 Osumilite-(Mg) (K,Na)(Mg,Fe)2(Al,Fe)3(Si,Al)12O30 P 6/mcc 6/m 2/m 2/m

63.2.1a.8 Poudretteite KNa2B3Si12O30 P 6/mcc 6/m 2/m 2/m

63.2.1a.9 Sugilite KNa2(Fe,Mn,Al)2Li3Si12O30 P 6/mcc 6/m 2/m 2/m

63.2.1a.10 Yagiite (Na,K)3Mg4(Al,Mg)6(Si,Al)24O60 P 6/mmc 6/m 2/m 2/m

63.2.1a.11 Dusmatovite K(K,Na,[])(Mn,Y,Zr)2(Zn,Li)3Si12O30 P 6/mcc 6/m 2/m 2/m

63.2.1a.12 Milarite K2Ca4Al2Be4Si24O60·(H2O) P 6/mcc 6/m 2/m 2/m

63.2.1a.13 Sogdianite (K,Na)2(Li,Fe,Al)3ZrSi12O30 P 6/mmm 6/m 2/m 2/m

63.2.1a.14 Roedderite (Na,K)2(Mg,Fe)5Si12O30 P 6₃/mmc 6/m 2/m 2/m

63.2.1a.15 Berezanskite! KLi3Ti2Si12O30 P 6/mcc 6/m 2/m 2/m

63.2.1a.16 Shibkovite! K(Ca,Mn,Na)2(K2-x,[]x)2ZnSi12O30(x~0.8) P 6/mcc 6/m 2/m 2/m

63.2.1a.17 Trattnerite ! (Fe,Mg)2(Mg,Fe)3(Si12O30) P 6/mcc 6/m 2/m 2/m

63.2.1a.18 Almarudite! K([],Na)2(Mn,Fe,Mg)2(Be,Al)3[Si12O30] P 6/mcc 6/m 2/m 2/m

63.2.1a.19 IMA2003-045a! (Sc,Ca)2KBe3Si12O30 P 6/mmc 6/m 2/m 2/m

Strunz Class:

VIII/E.22-25 VIII - Silicates

VIII/E - Cyklosilicates, double six rings [Si12O30]12-

VIII/E.22 - Millarite - Osumilite series

VIII/E.22-10 Poudretteite KNa2B3Si12O30 P 6/mcc 6/m 2/m 2/m

VIII/E.22-20 Milarite K2Ca4Al2Be4Si24O60·(H2O) P 6/mcc 6/m 2/m 2/m

VIII/E.22-22 Almarudite! K([],Na)2(Mn,Fe,Mg)2(Be,Al)3[Si12O30] P 6/mcc 6/m 2/m 2/m

VIII/E.22-25 Trattnerite (Fe,Mg)2(Mg,Fe)3(Si12O30) P 6/mcc 6/m 2/m 2/m

VIII/E.22-30 Eifelite KNa3Mg4Si12O30 P 6/mcc 6/m 2/m 2/m

VIII/E.22-40 Roedderite (Na,K)2(Mg,Fe)5Si12O30 P 6₃/mmc 6/m 2/m 2/m

VIII/E.22-50 Chayesite K(Mg,Fe)4Fe(Si12O30) P 6/mcc 6/m 2/m 2/m

VIII/E.22-60 Merrihueite (K,Na)2(Fe,Mg)5Si12O30 P 6/mcc 6/m 2/m 2/m

VIII/E.22-70 Yagiite (Na,K)3Mg4(Al,Mg)6(Si,Al)24O60 P 6/mmc 6/m 2/m 2/m

VIII/E.22-80 Osumilite-(Mg) (K,Na)(Mg,Fe)2(Al,Fe)3(Si,Al)12O30 P 6/mcc 6/m 2/m 2/m

VIII/E.22-90 Osumilite-(Fe) (K,Na)(Fe,Mg)2(Al,Fe)3(Si,Al)12O30 P 6/mcc 6/m 2/m 2/m

VIII/E.22-100 Emeleusite Na4Li2Fe2Si12O30 Pnna 2/m 2/m 2/m

VIII/E.22-110 Sugilite KNa2(Fe,Mn,Al)2Li3Si12O30 P 6/mcc 6/m 2/m 2/m

VIII/E.22-120 Sogdianite (K,Na)2(Li,Fe,Al)3ZrSi12O30 P 6/mmm 6/m 2/m 2/m

VIII/E.22-125 Berezanskite! KLi3Ti2Si12O30 P 6/mcc 6/m 2/m 2/m

VIII/E.22-130 Darapiosite KNa2Zr[Li(Mn,Zr)2Si12O30] P 6/mcc 6/m 2/m 2/m

VIII/E.22-133 Shibkovite! K(Ca,Mn,Na)2(K2-x,[]x)2ZnSi12O30(x~0.8) P 6/mcc 6/m 2/m 2/m

VIII/E.22-135 Dusmatovite K(K,Na,[])(Mn,Y,Zr)2(Zn,Li)3Si12O30 P 6/mcc 6/m 2/m 2/m

VIII/E.22-140 Brannockite KSn2Li3Si12O30 P 6/mcc 6/m 2/m 2/m

VIII/E.22-150 Armenite BaCa2Al6Si9O30·2(H2O) Pnc2 mm2

Other Trattnerite Information

References:

NAME( CanMin, 42:1926) PHYS. PROP.(CanMin, 42:1926) OPTIC PROP.(CanMin, 42:1926)

See Also:

Links to other databases for Trattnerite :
1 -Am. Min. Crystal Structure Database 2 -Athena 3 -Google Images 4 -Google Scholar 5 -MinDAT 6 -MinMax(Deutsch) 7 -MinMax(English) 8 -Mineralienatlas (Deutsch) 9 -QUT Mineral Atlas

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Trattnerite

(Fe,Mg)2(Mg,Fe)3(Si12O30)
Dana No: 63.2.1a.17 Strunz No: VIII/E.22-25
Locality:

Notes: