Hubeite Mineral Data (original) (raw)
General Hubeite Information
Chemical Formula:
Ca2Mn++Fe+++Si4O12(OH)(H2O)2
Composition:
Molecular Weight = 544.27 gm
Calcium 15.61 % Ca 21.84 % CaO
Manganese 8.78 % Mn 11.34 % MnO
Aluminum 0.20 % Al 0.37 % Al2O3
Iron 9.75 % Fe 13.94 % Fe2O3
Silicon 20.64 % Si 44.16 % SiO2
Hydrogen 0.93 % H 8.28 % H2O
Oxygen 44.09 % O
______ ______
100.00 % 99.93 % = TOTAL OXIDE
Empirical Formula:
Ca2Mn2+0.87Ca0.12Fe3+0.95Al0.04Si4O12(OH)�2(H2O)
Environment:
Mildly oxidizing conditions in a calc-manganese silicate skarn. 4-membered silicate rings; structure
IMA Status:
Approved IMA 2002 (Dana # Added)
Locality:
Dayan mine near Huangshi, Hubei Province, China. Link to MinDat.org Location Data.
Name Origin:
Named after the locality.
Synonym:
IMA2000-022
Hubeite Image
Images:
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Hubeite Inesite Comments: Brown hubeite aggregates accompanied by prismatic pinkish inesite crystals. Location: Fengjiashan Mine, Daye, Hubei China.Scale: 5.3 x 3.7 x 1.1 cm. © Fabre Minerals |
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Images:
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Hubeite Inesite Comments: Translucent, deep root beer brown, platy hueite crystals in fan-like groups to 1mm with delicate pink laths of inesite. Location: Fengjiashan Mine, Daye Co., Huangshi Prefecture, Hubei Province, China.Scale: Picture Size 5 mm. © Tom Loomis / Dakota Matrix |
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Hubeite Crystallography
Axial Ratios:
a:b:c =0.7178:1:0.4729
Cell Dimensions:
a = 9.96, b = 13.875, c = 6.562, Z = 2; alpha = 133.19°, beta = 101.5°, gamma = 66.27° V = 593.11 Den(Calc)= 3.05
Crystal System:
Triclinic - PinacoidalH-M Symbol ( 1) Space Group: P1
X Ray Diffraction:
By Intensity(I/Io): 9.072(1)(100), 8.238(0.9)(110), 3.095(0.7)(142),3.126(0.7)(320), 2.781(0.6)(220), 1.627(0.3)(154,173),
Forms:
Mouse
Dbl Clk - Start-Stop Rotation
RMB - Cycle Display Modes
Drag1 - Manipulate Crystal
Drag2 - Resize
Keyboard
S - Stereo
I - Indicies
- Start-Stop Rotation
F - Fit to Screen
M - Menu
Help on Above
| | Forms:( 3 5 2) ( 0 1 1) ( 1 0 1) ( 1 0 0) ( 0 0 1) Warning: this large pop-up is very compute intensive and may not work well with some computers. | | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
Physical Properties of Hubeite
Cleavage:
{001} Good
Color:
Dark brown, Light brown.
Density:
3.02
Diaphaneity:
Transparent
Fracture:
Brittle - Conchoidal - Very brittle fracture producing small, conchoidal fragments.
Habit:
Aggregates - Made of numerous individual crystals or clusters.
Habit:
Radial - Crystals radiate from a center without producing stellar forms (e.g. stibnite)
Habit:
Rosette - Bundled tabular aggregates resembling rose flower petals.
Hardness:
5.5 - Knife Blade
Luster:
Vitreous (Glassy)
Streak:
pale orange brown
Optical Properties of Hubeite
Gladstone-Dale:
CI meas= 0.035 (Excellent) - where the CI = (1-KPDmeas/KC)
CI calc= 0.032 (Excellent) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2255,KPDmeas= 0.2247,KC= 0.2329
Ncalc = 1.7
Optical Data:
Biaxial (-), a=1.667, b=1.679, g=1.69, bire=0.0230
Calculated Properties of Hubeite
Electron Density:
Bulk Density (Electron Density)=2.99 gm/cc
note: Specific Gravity of Hubeite =3.01 gm/cc.
Fermion Index:
Fermion Index = 0.01
Boson Index = 0.99
Photoelectric:
PEHubeite = 7.79 barns/electron
U=PEHubeite x rElectron Density= 23.30 barns/cc.
Radioactivity:
GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Hubeite is Not Radioactive
Hubeite Classification
Dana Class:
57.02.03.02 (57)Sorosilicate Insular Si3O10 and Larger Noncyclic Groups
(57.02)with [Si4O13] groups
(57.02.03)Akatoreite Group
57.02.03.01 Akatoreite (Mn,Fe)9Al2Si8O24(OH)8 P1 1
57.02.03.02 Hubeite! Ca2MnFeSi4O12(OH)(H2O)2 P1 1
57.02.03.03 Cassagnaite! (Ca,Mn)4(Fe,Mn,Al)4(OH)4(V,Mg,Al)2(O,OH)4(Si3O10)(SiO4)2 C mcm 2/m 2/m 2/m
Strunz Class:
09.BJ.60 09 - SILICATES (Germanates)
09.B - Sorosilicates
09.BJ -Sorosilicates with Si3O10, Si4O11, etc
09.BJ.60 Hubeite! Ca2MnFeSi4O12(OH)(H2O)2 P1 1
Other Hubeite Information
References:
NAME( MinRec, Vol 33, p 465) PHYS. PROP.(MinRec, Vol 33, p 465) OPTIC PROP.(MinRec, Vol 33, p 465)
See Also:
Links to other databases for Hubeite :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - GeoScienceWorld
4 - Google Images
5 - Google Scholar
6 - MinDAT
7 - Mineralienatlas (Deutsch)
8 - Online Mineral Museum
9 - QUT Mineral Atlas
10 - Ruff.Info
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Ask about Hubeite here :
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Print or Cut-and-Paste your Hubeite Specimen Label here :
Hubeite
Ca2Mn++Fe+++Si4O12(OH)(H2O)2
Dana No: 57.02.03.02 Strunz No: 09.BJ.60
Locality:
Notes: