Hibbingite Mineral Data

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Hibbingite Mineral Data

General Hibbingite Information

Chemical Formula:

(Fe,Mg)2(OH)3Cl

Composition:

Molecular Weight = 182.40 gm

Magnesium 6.66 % Mg 11.05 % MgO

Iron 45.93 % Fe 59.08 % FeO

Hydrogen 1.66 % H 14.82 % H₂O

Chlorine 19.44 % Cl 19.44 % Cl

- % Cl -4.39 % -O=Cl₂

Oxygen 26.32 % O

______ ______

100.00 % 100.00 % = TOTAL OXIDE

Empirical Formula:

Fe²⁺_1.5Mg_0.5(OH)₃Cl

Environment:

Serpentinized troctolite and peridotite.

IMA Status:

Approved IMA 1994

Locality:

Drill cores in the Duluth complex, near Hibbing, St. Louis Co., Minnesota, Link to MinDat.org Location Data.

Name Origin:

Named for the locality.

Name Pronunciation:

Hibbingite + Pronunciation

Synonym:

IMA1991-036

Hibbingite Image

Images:

Hibbingite

Comments: Orange crystalline hibbingite grains in rock matrix.
Location: 900' level drill core, Duluth Complex, near Hibbing, Saint Louis County, Minnesota, USA. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Hibbingite Crystallography

Axial Ratios:

a:b:c =0.6858:1:0.7717

Cell Dimensions:

a = 6.31, b = 9.2, c = 7.1, Z = 4; V = 412.17 Den(Calc)= 2.94

Crystal System:

Orthorhombic - DipyramidalH-M Symbol (2/m 2/m 2/m) Space Group: Pnam

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

By Intensity(I/I_o): 2.37(1), 2.93(0.6), 2.14(0.5),

Physical Properties of Hibbingite

Cleavage:

{???} Good

Color:

Colorless, Yellow, Light green, Red.

Density:

3.04

Diaphaneity:

Translucent to Opaque

Hardness:

3.5 - Copper Penny

Streak:

white

Optical Properties of Hibbingite

Gladstone-Dale:

CI meas= 0.127 (Poor) - where the CI = (1-KPDmeas/KC)
CI calc= 0.097 (Poor) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2211,KPDmeas= 0.2138,KC= 0.245
Ncalc = 1.72 - 1.74

Optical Data:

Biaxial (?), b=1.6-1.7

Calculated Properties of Hibbingite

Electron Density:

Bulk Density (Electron Density)=2.87 gm/cc
note: Specific Gravity of Hibbingite =2.94 gm/cc.

Fermion Index:

Fermion Index = 0.01
Boson Index = 0.99

Photoelectric:

PE_Hibbingite= 15.13 barns/electron
U=PE_Hibbingite x rElectron Density= 43.42 barns/cc.

Radioactivity:

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

Hibbingite Classification

Dana Class:

10.01.01.02 (10)Oxyhalides and Hydroxyhalides

(10.01)where (A)2 (O,OH)3 Xq

(10.01.01)Atacamite group

10.01.01.01 Atacamite Cu2Cl(OH)3 Pmcn 2/m 2/m 2/m

10.01.01.02 Hibbingite (Fe,Mg)2(OH)3Cl Pnam 2/m 2/m 2/m

10.01.01.03 Gillardite! Cu3NiCl2(OH)6 R 3m 3

10.01.01.04 Haydeeite! Cu3Mg(OH)6Cl2 R 3m 3

Strunz Class:

03.DA.10a 03 - HALIDES

03.D - Oxyhalides, Hydroxyhalides and Related Double Halides

03.DA -With Cu, etc., without Pb

03.DA.10a Atacamite Cu2Cl(OH)3 Pmcn 2/m 2/m 2/m

03.DA.10a Hibbingite (Fe,Mg)2(OH)3Cl Pnam 2/m 2/m 2/m

03.DA.10a Kempite Mn2Cl(OH)3 Pnam 2/m 2/m 2/m

Other Hibbingite Information

References:

NAME( AntBidBlaNic3) PHYS. PROP.(Am.Min.,Vol.79,p555-561,1994) OPTIC PROP.(Am.Min.,Vol.79,p555-561,1994)

See Also:

Links to other databases for Hibbingite :
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 - MinDAT
10 - Mineralienatlas (Deutsch)
11 - Online Mineral Museum
12 - QUT Mineral Atlas
13 - Ruff.Info
14 - WWW-MINCRYST

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Ask about Hibbingite here :
Ask-A-Mineralogist from the Mineralogical Society of America
Mindat.org's Discussion Groups
Original Rockhounds Discussion Group
Rockhounds Discussion Group on Yahoo Groups
Mineral Discussion Forum from Fabre Minerals - also available in Español

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

Hibbingite

(Fe,Mg)2(OH)3Cl
Dana No: 10.01.01.02 Strunz No: 03.DA.10a
Locality:

Notes: