Dietrichite Mineral Data

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General Dietrichite Information

Chemical Formula:

(Zn,Fe++,Mn)Al2(SO4)4•22(H2O)

Composition:

Molecular Weight = 896.04 gm

Manganese 0.61 % Mn 0.79 % MnO

Aluminum 6.02 % Al 11.38 % Al₂O₃

Zinc 4.38 % Zn 5.45 % ZnO

Iron 1.87 % Fe 2.41 % FeO

Hydrogen 4.95 % H 44.23 % H₂O

Sulfur 14.31 % S 35.74 % SO₃

Oxygen 67.85 % O

______ ______

100.00 % 100.00 % = TOTAL OXIDE

Empirical Formula:

Zn_0.6Fe²⁺_0.3Mn²⁺_0.1Al₂(SO₄)₄•22(H₂O)

Environment:

Post-mining efflorescences in abandoned mine workings.

IMA Status:

Valid Species (Pre-IMA) 1878

Locality:

Baia Sprie (Felsobanya), Romania. Link to MinDat.org Location Data.

Name Origin:

Named for Gustav Heinrich Dietrich, from Pribram, Czech Republic, who analyzed the first specimens.

Name Pronunciation:

Dietrichite + Pronunciation

Dietrichite Image

Images:

Dietrichite

Comments: Pale beige fibrous dietrichite.
Location: Baia Sprie, Transylvania, Maramures, Romania. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Dietrichite Crystallography

Axial Ratios:

a:b:c =0.2553:1:0.8749

Cell Dimensions:

a = 6.24, b = 24.434, c = 21.379, Z = 4; beta = 100.1° V = 3,209.10 Den(Calc)= 1.85

Crystal System:

Monoclinic - PrismaticH-M Symbol (2/m) Space Group: P 2₁/c

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

By Intensity(I/I_o): 3.52(1), 4.33(1), 4.84(0.4),

Crystal Structure:

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drag2 - RMB Resize/Rotate
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Ballirano P , Bellatreccia F , Grubessi O , European Journal of Mineralogy , 15 (2003) p.1043-1049, New crystal-chemical and structural data of dietrichite,, ideally ZnAl2(SO4)4*22H2O, a member of the halotrichite group

Physical Properties of Dietrichite

Color:

Brownish yellow, Gray white.

Density:

1.8

Diaphaneity:

Transparent

Habit:

Fibrous - Crystals made up of fibers.

Hardness:

2 - Gypsum

Luster:

Vitreous (Glassy)

Streak:

white

Optical Properties of Dietrichite

Gladstone-Dale:

CI meas= -0.061 (Fair) - where the CI = (1-KPDmeas/KC)
CI calc= -0.032 (Excellent) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.26,KPDmeas= 0.2672,KC= 0.2519
Ncalc = 1.45 - 1.47

Optical Data:

Biaxial (+), a=1.475, b=1.48, g=1.488, bire=0.0130, 2V(Calc)=78, 2V(Meas)=70.

Calculated Properties of Dietrichite

Electron Density:

Bulk Density (Electron Density)=1.93 gm/cc
note: Specific Gravity of Dietrichite =1.85 gm/cc.

Fermion Index:

Fermion Index = 0.0035983421
Boson Index = 0.9964016579

Photoelectric:

PE_Dietrichite= 3.84 barns/electron
U=PE_Dietrichite x rElectron Density= 7.40 barns/cc.

Radioactivity:

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

Dietrichite Classification

Dana Class:

29.07.03.04 (29)Hydrated Acid and Sulfates

(29.07)where A (B)2 (XO4)4 · x(H2O)

(29.07.03)Halotrichite Group (Monoclinic with 22 H2O)

29.07.03.01 Pickeringite MgAl2(SO4)4•22(H2O) P 2 2

29.07.03.02 Halotrichite FeAl2(SO4)4•22(H2O) P 2 2

29.07.03.03 Apjohnite MnAl2(SO4)4•22(H2O) P 2₁/c 2/m

29.07.03.04 Dietrichite (Zn,Fe,Mn)Al2(SO4)4•22(H2O) P 2₁/c 2/m

29.07.03.05 Bilinite FeFe2(SO4)4•22(H2O) P 2₁/c 2/m

29.07.03.06 Redingtonite (Fe,Mg,Ni)(Cr,Al)2(SO4)4•22(H2O) Mono

29.07.03.07 Wupatkiite (Co,Mg,Ni)Al2(SO4)4•22(H2O) P 2₁/c 2/m

Strunz Class:

07.CB.85 07 - SULFATES (SELENATES, TELLURATES)

07.C - Sulfates (selenates, etc.) without Additional Anions, with H2O

07.CB -With only medium-sized cations

07.CB.85 Bilinite FeFe2(SO4)4•22(H2O) P 2₁/c 2/m

07.CB.85 Apjohnite MnAl2(SO4)4•22(H2O) P 2₁/c 2/m

07.CB.85 Dietrichite (Zn,Fe,Mn)Al2(SO4)4•22(H2O) P 2₁/c 2/m

07.CB.85 Halotrichite FeAl2(SO4)4•22(H2O) P 2 2

07.CB.85 Pickeringite MgAl2(SO4)4•22(H2O) P 2 2

07.CB.85 Redingtonite (Fe,Mg,Ni)(Cr,Al)2(SO4)4•22(H2O) Mono

07.CB.85 Wupatkiite (Co,Mg,Ni)Al2(SO4)4•22(H2O) P 2₁/c 2/m

Other Dietrichite Information

References:

NAME( AntBidBlaNic5) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Ford32)

See Also:

Links to other databases for Dietrichite :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - EUROmin Project
4 - Ecole des Mines de Paris
5 - GeoScienceWorld
6 - Google Images
7 - Google Scholar
8 - Handbook of Mineralogy (MinSocAm)
9 - Handbook of Mineralogy (UofA)
10 - MinDAT
11 - Mineralienatlas (Deutsch)
12 - Online Mineral Museum
13 - QUT Mineral Atlas
14 - Ruff.Info

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Print or Cut-and-Paste your Dietrichite Specimen Label here :

Dietrichite

(Zn,Fe++,Mn)Al2(SO4)4•22(H2O)
Dana No: 29.07.03.04 Strunz No: 07.CB.85
Locality:

Notes: