Lausenite Mineral Data

Lausenite Mineral Data +

General Lausenite Information

Chemical Formula:

Fe+++2(SO4)3·6(H2O)

Composition:

Molecular Weight = 507.98 gm

Iron 21.99 % Fe 31.44 % Fe₂O₃

Hydrogen 2.38 % H 21.28 % H₂O

Sulfur 18.94 % S 47.28 % SO₃

Oxygen 56.69 % O

______ ______

100.00 % 100.00 % = TOTAL OXIDE

Empirical Formula:

Fe³⁺₂(SO₄)₃·6(H₂O)

Environment:

Formed as the result of a mine fire.

IMA Status:

Valid Species (Pre-IMA) 1928

Locality:

United Verde mine, Jerome, Arizona, USA. Link to MinDat.org Location Data.

Name Origin:

Named for Carl Lausen, U. S. Mining engineer, who first described the species.

Lausenite Image

Images:

Lausenite

Comments: Pale tan crystalline powdery aggregate of lausenite.
Location: United Verde Mine, Jerome, Yavapai County, Arizona, USA. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Lausenite Crystallography

Crystal System:

MonoclinicSpace Group: Unk.

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

By Intensity(I/I_o): 3.38(1), 3.52(1), 2.07(0.6),2.85(0.5), 3.03(0.5), 2.28(0.4), 2.52(0.4), 5.55(0.4),

Crystal Structure:

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Majzlan J , Botez C , Stephens P W , American Mineralogist , 90 (2005) p.411-416, The crystal structures of synthetics Fe2(SO4)3(H2O)5 and the type specimen of lausenite

Physical Properties of Lausenite

Color:

White.

Habit:

Fibrous - Crystals made up of fibers.

Luminescence:

Non-fluorescent.

Luster:

Silky

Streak:

white

Optical Properties of Lausenite

Optical Data:

Biaxial (-), a=1.598, b=1.628, g=1.654, bire=0.0560

Calculated Properties of Lausenite

Fermion Index

Fermion Index = 0.00635
Boson Index = 0.99365

Photoelectric:

PE_Lausenite= 7.57 barns/electron
U=PE_Lausenite x r_electron= . barns/cc.

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)

Lausenite is Not Radioactive

Lausenite Classification

Dana Class:

29.8.1.1 (29)Hydrated Acid and Sulfates

(29.8)where (A)2 (XO4)3 · x(H2O)

(29.8.1)Dana Group

29.8.1.1 Lausenite Fe2(SO4)3·6(H2O) Unk. Mono

Strunz Class:

VI/C.08-20 VI - Sulfates,Chromates,Molybdates and Tungstates

VI/C - Water-bearing sulfates without unfamiliar anions. cations of medium size

VI/C.08 - Rhomboclase - Meta-alunogen series

VI/C.08-10 Rhomboclase (H5O2)Fe(SO4)2·2(H2O) P nma 2/m 2/m 2/m

VI/C.08-20 Lausenite Fe2(SO4)3·6(H2O) Unk. Mono

VI/C.08-30 Kornelite Fe2(SO4)3·7(H2O) P 2₁/c 2/m

VI/C.08-40 Coquimbite Fe2(SO4)3·9(H2O) P 3c 3 2/m

VI/C.08-50 Paracoquimbite Fe2(SO4)3·9(H2O) R 3 3

VI/C.08-60 Quenstedtite Fe2(SO4)3·10(H2O) P1 1

VI/C.08-70 Alunogen Al2(SO4)3·17(H2O) P1 1

VI/C.08-80 Meta-alunogen Al4(SO4)6·27(H2O) Mono

Other Lausenite Information

References:

NAME( Dana8) PHYS. PROP.(Dana8) OPTIC PROP.(Enc. of Minerals,2nd ed.,1990)

See Also:

Links to other databases for Lausenite :
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 -École des Mines de Paris

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Lausenite

Fe+++2(SO4)3·6(H2O)
Dana No: 29.8.1.1 Strunz No: VI/C.08-20
Locality:

Notes: