Dorallcharite Mineral Data

Dorallcharite Mineral Data +

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General Dorallcharite Information

Chemical Formula:

(Tl,K)Fe+++3(SO4)2(OH)6

Composition:

Molecular Weight = 616.51 gm

Potassium 1.90 % K 2.29 % K₂O

Thallium 23.21 % Tl 25.02 % TlO

Iron 27.18 % Fe 38.85 % Fe₂O₃

Hydrogen 0.98 % H 8.77 % H₂O

Sulfur 10.40 % S 25.97 % SO₃

Oxygen 36.33 % O

______ ______

100.00 % 100.91 % = TOTAL OXIDE

Empirical Formula:

Tl_0.7K_0.3Fe³⁺₃(SO₄)₂(OH)₆

IMA Status:

Approved IMA 1994

Locality:

Link to MinDat.org Location Data.

Synonym:

ICSD 74610

IMA1992-041

PDF 47-1768

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Dorallcharite Crystallography

Axial Ratios:

a:c = 1:2.40966

Cell Dimensions:

a = 7.3301, c = 17.6631, Z = 3; V = 821.90 Den(Calc)= 3.74

Crystal System:

Trigonal - Hexagonal ScalenohedralH-M Symbol (3 2/m) Space Group: R 3m

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

By Intensity(I/I_o): 3.112(1), 5.947(0.87), 3.666(0.34),

Crystal Structure:

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Balic-Zunic T , Moelo Y , Loncar Z , Micheelsen H , European Journal of Mineralogy , 6 (1994) p.255-263, Dorallcharite, Tl0.8K0.2Fe3(SO4)2(OH)6, a new, member of the jarosite-alunite family

Physical Properties of Dorallcharite

Cleavage:

[0001] Good

Color:

Golden yellow.

Density:

3.85

Diaphaniety:

Transparent

Hardness:

3-4 - Calcite-Fluorite

Luster:

Earthy (Dull)

Streak:

yellow

Optical Properties of Dorallcharite

Gladstone-Dale:

CI meas= -0.019 (Superior) - where the CI = (1-KPDmeas/KC)
CI calc= -0.049 (Good) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2126,KPDmeas= 0.2065,KC= 0.2027

Optical Data:

Uniaxial (-), e=1.768, w=1.822, bire=0.0540.

Calculated Properties of Dorallcharite

Electron Density:

r_electron=3.63 gm/cc
note: r_{Dorallcharite}=3.85 gm/cc.

Fermion Index

Fermion Index = 0.00671
Boson Index = 0.99329

Photoelectric:

PE_{Dorallcharite}= 371.60 barns/electron
U=PE_{Dorallcharite} x r_electron=1,347.81 barns/cc.

Radioactivity:

GRapi = 25.84 (Gamma Ray American Petroleum Institute Units)

Estimated Radioactivity from Dorallcharite - barely detectable

Dorallcharite Classification

Dana Class:

30.2.5.8 (30)Anhydrous Sulfates Containing Hydroxyl or Halogen

(30.2)where (A B)2 XO4 Zq

(30.2.5)Alunite Group (Jarosite Subgroup)

30.2.5.1 Jarosite KFe3(SO4)2(OH)6 R 3 3

30.2.5.2 Natrojarosite NaFe3(SO4)2(OH)6 R 3m 3m

30.2.5.3 Hydronium-jarosite (H3O)Fe3(SO4)2(OH)6 R 3m 3m

30.2.5.4 Ammoniojarosite (NH4)Fe3(SO4)2(OH)6 R 3m 3m

30.2.5.5 Argentojarosite AgFe3(SO4)2(OH)6 R 3m 3m

30.2.5.6 Plumbojarosite PbFe6(SO4)4(OH)12 R 3m 3 2/m

30.2.5.7 Beaverite PbCu(Fe,Al)2(SO4)2(OH)6 R 3m 3m

30.2.5.8 Dorallcharite (Tl,K)Fe3(SO4)2(OH)6 R 3m 3 2/m

Strunz Class:

VI/B.11-65 VI - Sulfates,Chromates,Molybdates and Tungstates

VI/B - Waterfree sulfates [SO4]2- with unfamiliar anions. mostly big cations

VI/B.11 - Alunite group, Natroalunite - Jarosite - Beaverite

VI/B.11-10 Natroalunite NaAl3(SO4)2(OH)6 R 3m 3 2/m

VI/B.11-20 Alunite KAl3(SO4)2(OH)6 R 3m, R 3m Trig

VI/B.11-30 Ammonioalunite (NH4)Al3(SO4)2(OH)6 R 3m 3 2/m

VI/B.11-40 Minamiite (Na,Ca,K)Al3(SO4)2(OH)6 R 3m 3 2/m

VI/B.11-43 Huangite Ca0.5Al3(SO4)2(OH)6 R 3m 3 2/m

VI/B.11-45 Walthierite Ba0.5Al3(SO4)2(OH)6 R 3m 3 2/m

VI/B.11-50 Natrojarosite NaFe3(SO4)2(OH)6 R 3m 3m

VI/B.11-60 Jarosite KFe3(SO4)2(OH)6 R 3 3

VI/B.11-65 Dorallcharite (Tl,K)Fe3(SO4)2(OH)6 R 3m 3 2/m

VI/B.11-70 Ammoniojarosite (NH4)Fe3(SO4)2(OH)6 R 3m 3m

VI/B.11-80 Hydronium-jarosite (H3O)Fe3(SO4)2(OH)6 R 3m 3m

VI/B.11-90 Argentojarosite AgFe3(SO4)2(OH)6 R 3m 3m

VI/B.11-100 Plumbojarosite PbFe6(SO4)4(OH)12 R 3m 3 2/m

VI/B.11-110 Osarizawaite PbCuAl2(SO4)2(OH)6 R 3m 3m

VI/B.11-120 Beaverite PbCu(Fe,Al)2(SO4)2(OH)6 R 3m 3m

Other Dorallcharite Information

References:

PHYS. PROP.(37th List of New Min.,Min. Mag.,1996) OPTIC PROP.(37th List of New Min.,Min. Mag.,19)

See Also:

Links to other databases for Dorallcharite :
1 -Am. Min. Crystal Structure Database 2 -Athena 3 - EUROmin Project 4 -Google Images 5 -Google Scholar 6 -Handbook of Mineralogy (UofA) 7 -MinDAT 8 -MinMax(Deutsch) 9 -MinMax(English) 10 -Mineralienatlas (Deutsch) 11 -QUT Mineral Atlas 12 - WWW-MINCRYST 13 -École des Mines de Paris

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Dorallcharite

(Tl,K)Fe+++3(SO4)2(OH)6
Dana No: 30.2.5.8 Strunz No: VI/B.11-65
Locality:

Notes: