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Hydroxylclinohumite Mineral Data

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General Hydroxylclinohumite Information

Help on Chemical  Formula: Chemical Formula: Mg9(SiO4)4(OH,F)2
Help on Composition: Composition: Molecular Weight = 621.49 gm
   Magnesium  35.20 %  Mg   58.37 % MgO
   Silicon    18.08 %  Si   38.67 % SiO2
   Hydrogen    0.29 %  H     2.61 % H2O
   Oxygen     45.82 %  O
   Fluorine    0.61 %  F     0.61 % F
                -   %   F    -0.26 % -O=F2    
             ______        ______ 
             100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Mg9(SiO4)4(OH)1.8F0.2
Help on Environment: Environment: Occurs in Mg-skarn (chaliphyric) rims around dolomitic marble xenoliths in gabbroic rocks and associated Fe-Ti ores. A member of the humite group
Help on IMA Status: IMA Status: Approved IMA 1998 (Dana # Added)
Help on Locality: Locality: Zelentsovskaya mine on the southern slopes of the western Urals, Russia. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for its composition and the mineral clinohumite.
Help on Name Pronunciation: Name Pronunciation: Hydroxylclinohumite + Pronunciation Say HYDROXYLCLINOHUMITE
Help on Synonym: Synonym: IMA1998-065

Hydroxylclinohumite Image

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Comments: Deep red tabular hydroxylclinohumite crystal.
Location: Koksha Valley, Badakshan Province, Afghanistan. Scale: See Image.
© Rruff Database

Hydroxylclinohumite Crystallography

Help on Axial Ratios: Axial Ratios: a:b:c =2.8831:1:2.1636
Help on Cell Dimensions: Cell Dimensions: a = 13.6894, b = 4.748, c = 10.273, Z = 3; beta = 100.72° V = 656.06 Den(Calc)= 4.72
Help on Crystal System: Crystal System: Monoclinic - Prismatic H-M Symbol (2/m) Space Group: P 21/c
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 2.269(1)(512), 3.72(0.95)(202), 2.259(0.95)(114), 2.516(0.93)(313), 2.772(0.91)(113), 2.551(0.8)(411), 1.747(0.79)(422,522,124)

Physical Properties of Hydroxylclinohumite

Help on Cleavage: Cleavage: None
Help on Color: Color: Yellow orange, Pale yellow.
Help on Density: Density: 3.13
Help on Diaphaneity: Diaphaneity: Transparent to Translucent
Help on Fracture: Fracture: Conchoidal - Uneven - Uneven fracture producing small, conchoidal fragments.
Help on Habit: Habit: Granular - Generally occurs as anhedral to subhedral crystals in matrix.
Help on Hardness: Hardness: 6.5 - Pyrite
Help on Luster: Luster: Vitreous - Dull
Help on Streak: Streak: white

Optical Properties of Hydroxylclinohumite

Help on Gladstone-Dale: Gladstone-Dale: CI meas= 0.001 (Superior) - where the CI = (1-KPDmeas/KC)
CI calc= 0.337 (Poor) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.1367,KPDmeas= 0.2062,KC= 0.2063
Ncalc = 1.65 - 1.97
Help on Optical Data: Optical Data: Biaxial (+), a=1.631, b=1.641, g=1.664, bire=0.0330, 2V(Calc)=68, 2V(Meas)=70. Dispersion weak.

Calculated Properties of Hydroxylclinohumite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=3.12 gm/cc
note: Specific Gravity of Hydroxylclinohumite =3.13 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.04
Boson Index = 0.96
Help on Photoelectric: Photoelectric: PEHydroxylclinohumite = 1.48 barns/electron
U=PEHydroxylclinohumite x rElectron Density= 4.62 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Hydroxylclinohumite is Not Radioactive

Hydroxylclinohumite Classification

Help on  Dana Class: Dana Class: 52.03.02d.04 (52)Nesosilicate Insular SiO4 Groups and O, OH, F, and H2O
  (52.03)with cations in [6] coordination only
  (52.03.02d)Humite group (Clinohumite series)
52.03.02d.01 Clinohumite (Mg,Fe)9(SiO4)4(F,OH)2 P 21/c 2/m
52.03.02d.02 Jerrygibbsite (Mn,Zn)9(SiO4)4(OH)2 Pbn21 mm2
52.03.02d.03 Sonolite Mn9(SiO4)4(OH,F)2 P 21/a 2/m
52.03.02d.04 Hydroxylclinohumite! Mg9(SiO4)4(OH,F)2 P 21/c 2/m
Help on  Strunz Class: Strunz Class: 09.AF.55 09 - SILICATES (Germanates)
  09.A - Nesosilicates
  09.AF -Nesosilicates with additional anions;
09.AF.55 Clinohumite (Mg,Fe)9(SiO4)4(F,OH)2 P 21/c 2/m
09.AF.55 Sonolite Mn9(SiO4)4(OH,F)2 P 21/a 2/m
09.AF.55 Hydroxylclinohumite! Mg9(SiO4)4(OH,F)2 P 21/c 2/m

Other Hydroxylclinohumite Information

Help on References: References: NAME( AmMin, Vol 85, p 1843) PHYS. PROP.(AmMin, Vol 85, p 1843) OPTIC PROP.(AmMin, Vol 85, p 1843)
Help on See Also: See Also: Links to other databases for Hydroxylclinohumite :
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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Dana No: 52.03.02d.04 Strunz No: 09.AF.55





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