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Ferroholmquistite Mineral Data

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General Ferroholmquistite Information

Help on Chemical  Formula: Chemical Formula: [ ](Li2Fe++3Al2)Si8O22(OH)2
Help on Composition: Composition: Molecular Weight = 808.43 gm
   Potassium   0.05 %  K     0.06 % K2O
   Sodium      0.11 %  Na    0.15 % Na2O
   Lithium     1.61 %  Li    3.47 % Li2O
   Magnesium   4.42 %  Mg    7.33 % MgO
   Manganese   0.14 %  Mn    0.18 % MnO
   Aluminum    6.31 %  Al   11.92 % Al2O3
   Iron       11.81 %  Fe   15.20 % FeO
   Silicon    27.79 %  Si   59.46 % SiO2
   Hydrogen    0.25 %  H     2.20 % H2O
   Oxygen     47.44 %  O
   Fluorine    0.07 %  F     0.07 % F
                -   %   F    -0.03 % -O=F2    
             ______        ______ 
             100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: K0.01Na0.01Li1.88Mg0.08Na0.03Fe2+0.01Al1.89Fe2+1.7Mg1.39Mn2+0.02Si8O22(OH)1.97F0.03
Help on Environment: Environment: Metasomatism around highly fractionated lithium-rich pegmatites that intrude amphibolites.
Help on IMA Status: IMA Status: Approved IMA 1978
Help on Locality: Locality: Greenbushes pegmatite (Western Australia). Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: The name reflects its composition and relationship to holmquistite..
Help on Name Pronunciation: Name Pronunciation: Ferroholmquistite + Pronunciation Say FERROHOLMQUISTITE
Help on Synonym: Synonym: IMA2004-030
 

Ferroholmquistite Image

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  Ferroholmquistite

Comments: Dark green ferroholmquistite, with silvery luster, prismatic crystalline ferroholmquistite in cesium rich reddish brown biotite.
Location: Goltsy, Eastern Sayan Mountains, Krasnoyarsk Territory, Siberia, Russia. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Ferroholmquistite Crystallography

Help on Axial Ratios: Axial Ratios: a:b:c =1.0338:1:0.2994
Help on Cell Dimensions: Cell Dimensions: a = 18.3, b = 17.7, c = 5.3, Z = 4; V = 1,716.72 Den(Calc)= 3.13
Help on Crystal System: Crystal System: Orthorhombic - Dipyramidal H-M Symbol (2/m 2/m 2/m) Space Group: P nma
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 8.11(1), 3(0.48), 4.42(0.26),2.797(0.17), 2.648(0.14), 3.62(0.13), 2.536(0.11),
 

Physical Properties of Ferroholmquistite

Help on Cleavage: Cleavage: {010} Good, {101} Good
Help on Color: Color: Black, Bluish violet.
Help on Diaphaneity: Diaphaneity: Subtranslucent
Help on Fracture: Fracture: Brittle - Generally displayed by glasses and most non-metallic minerals.
Help on Habit: Habit: Acicular - Occurs as needle-like crystals.
Help on Habit: Habit: Prismatic - Crystals Shaped like Slender Prisms (e.g. tourmaline).
Help on Hardness: Hardness: 5-6 - Between Apatite and Orthoclase
Help on Luster: Luster: Vitreous (Glassy)
 

Optical Properties of Ferroholmquistite

Help on Gladstone-Dale: Gladstone-Dale: CI calc= 0.026 (Excellent) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.205,KC= 0.2105
Ncalc = 1.66
Help on Optical Data: Optical Data: Biaxial (-), a=1.628, b=1.646, g=1.651, bire=0.0230
Help on Pleochroism (x): Pleochroism (x): colorless.
Help on Pleochroism (y): Pleochroism (y): pale violet-blue.
Help on Pleochroism (z): Pleochroism (z): blue to deep violet.
 

Calculated Properties of Ferroholmquistite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=3.09 gm/cc
note: Specific Gravity of Ferroholmquistite =3.13 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.02
Boson Index = 0.98
Help on Photoelectric: Photoelectric: PEFerroholmquistite = 4.89 barns/electron
U=PEFerroholmquistite x relectron= 15.12 barns/cc.
Help on Radioactivity: Radioactivity:

GRapi = 0.71 (Gamma Ray American Petroleum Institute Units)
Concentration of Ferroholmquistite per GRapi unit =141.67 (%)

Estimated Radioactivity from Ferroholmquistite - barely detectable

 

Ferroholmquistite Classification

Help on  Dana Class: Dana Class: 66.01.02.11 (66)Inosilicate Double-Width Unbranched Chains, W=2
  (66.01)with P=2 amphibole configuration
  (66.01.02)Dana Group
 
66.01.02.01 Magnesioanthophyllite? (Mg,Fe)7Si8O22(OH)2 P nma 2/m 2/m 2/m
 
66.01.02.02 Anthophyllite []Mg7Si8O22(OH)2 P nma 2/m 2/m 2/m
 
66.01.02.02a Protoanthophyllite! (Mg,Fe)7Si8O22(OH)2 Pnmn 2/m 2/m 2/m
 
66.01.02.03 Ferro-anthophyllite []Fe7Si8O22(OH)2 P nma 2/m 2/m 2/m
 
66.01.02.03a Protoferro-anthophyllite! (Fe,Mn)2(Fe,Mg)5(Si4O11)2(OH)2 Pnmn 2/m 2/m 2/m
 
66.01.02.03b Protomangano-ferro-anthophyllite! (Mn,Fe)2(Fe,Mg)5(Si4O11)2(OH)2 Pnmn 2/m 2/m 2/m
 
66.01.02.04 Sodicanthophyllite NaMg7Si8O22(OH)2 P nma 2/m 2/m 2/m
 
66.01.02.04a Sodic-ferro-anthophyllite! NaFe7Si8O22(OH)2 P nma 2/m 2/m 2/m
 
66.01.02.05 Magnesiogedrite? (Mg,Fe)5Al2Si6Al2O22(OH)2 P nma 2/m 2/m 2/m
 
66.01.02.06 Gedrite []Mg5Al2Si6Al2O22(OH)2 P nma 2/m 2/m 2/m
 
66.01.02.07 Ferrogedrite []Fe5Al2Si6Al2O22(OH)2 P nma 2/m 2/m 2/m
 
66.01.02.07a Sodic-ferrogedrite! NaFe6AlSi6Al2O22(OH)2 P nma 2/m 2/m 2/m
 
66.01.02.08 Sodicgedrite NaMg6AlSi6Al2O22(OH)2 P nma 2/m 2/m 2/m
 
66.01.02.09 Magnesioholmquistite Li2(Mg,Fe)3Al2Si8O22(OH)2 P nma 2/m 2/m 2/m
 
66.01.02.10 Holmquistite [](Li2Mg3Al2)Si8O22(OH)2 P nma 2/m 2/m 2/m
 
66.01.02.11 Ferroholmquistite [](Li2Fe3Al2)Si8O22(OH)2 P nma 2/m 2/m 2/m
Help on  Strunz Class: Strunz Class: 09.DE.05 09 - SILICATES (Germanates)
  09.D - Inosilicates* Structural terminology according to Liebau (1985)
  09.DE -Inosilicates with 2-periodic double chains, Si4O11; amphibole family
 
09.DE.05 Ferro-anthophyllite []Fe7Si8O22(OH)2 P nma 2/m 2/m 2/m
 
09.DE.05 Anthophyllite []Mg7Si8O22(OH)2 P nma 2/m 2/m 2/m
 
09.DE.05 Ferrogedrite []Fe5Al2Si6Al2O22(OH)2 P nma 2/m 2/m 2/m
 
09.DE.05 Gedrite []Mg5Al2Si6Al2O22(OH)2 P nma 2/m 2/m 2/m
 
09.DE.05 Ferroholmquistite [](Li2Fe3Al2)Si8O22(OH)2 P nma 2/m 2/m 2/m
 
09.DE.05 Holmquistite [](Li2Mg3Al2)Si8O22(OH)2 P nma 2/m 2/m 2/m
 
09.DE.05 Cummingtonite []Mg7Si8O22(OH)2 C 2/m 2/m
 
09.DE.05 Clinoferroholmquistite [](Li2Fe3Al2)Si8O22(OH)2 C 2/m 2/m
 
09.DE.05 Grunerite []Fe7Si8O22(OH)2 C 2/m 2/m
 
09.DE.05 Magnesiocummingtonite (Mg,Fe)7Si8O22(OH)2 C 2/m 2/m
 
09.DE.05 Manganogrunerite []Mn2Fe5Si8O22(OH) C 2/m 2/m
 
09.DE.05 Magnesioanthophyllite? (Mg,Fe)7Si8O22(OH)2 P nma 2/m 2/m 2/m
 
09.DE.05 Protomangano-ferro-anthophyllite! (Mn,Fe)2(Fe,Mg)5(Si4O11)2(OH)2 Pnmn 2/m 2/m 2/m
 
09.DE.05 Sodicgedrite NaMg6AlSi6Al2O22(OH)2 P nma 2/m 2/m 2/m
 
09.DE.05 Sodic-ferro-anthophyllite! NaFe7Si8O22(OH)2 P nma 2/m 2/m 2/m
 
09.DE.05 Sodic-ferrogedrite! NaFe6AlSi6Al2O22(OH)2 P nma 2/m 2/m 2/m
 
09.DE.05 Sodicanthophyllite NaMg7Si8O22(OH)2 P nma 2/m 2/m 2/m
 
09.DE.05 Permanganogrunerite! []Mn4(Fe)3(Si8O22)(OH)2 C 2/m 2/m
 
09.DE.05 Protoferro-anthophyllite! (Fe,Mn)2(Fe,Mg)5(Si4O11)2(OH)2 Pnmn 2/m 2/m 2/m
 
09.DE.05 Fluoro-sodic-pedrizite! NaLi2(Mg2Al2Li)S5Si8O22F2 C 2/m 2/m
 
09.DE.05 Sodic-ferri-ferropedrizite! NaLi2(Fe2Fe3)Si8O22(OH)2 C 2/m 2/m
 
09.DE.05 Manganocummingtonite Na(Na,Mn)2(Mg4,Fe)5Si8O22(OH)2 C 2/m 2/m
 
09.DE.05 Protoanthophyllite! (Mg,Fe)7Si8O22(OH)2 Pnmn 2/m 2/m 2/m
 
09.DE.05 Ferri-clinoferroholmquistite! []Li2(Fe2Fe3)Si8O22(OH)2 C 2/m 2/m
 
09.DE.05 Sodic-ferripedrizite! Na(LiNa)(Fe2Mg2Li)Si8O22(OH,F)2 C 2/m 2/m
 
09.DE.05 Ferripedrizite! NaLi2(Fe2Mg2Li)Si8O22(OH)2 C 2/m 2/m
 

Other Ferroholmquistite Information

Help on References: References: NAME( AmMin v90, no7, p1167) PHYS. PROP.(AmMin v90, no7, p1167) OPTIC PROP.(AmMin v90, no7, p1167)
Help on See Also: See Also: Links to other databases for Ferroholmquistite :
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 - MinDAT
9 - Mineralienatlas (Deutsch)
10 - Online Mineral Museum
11 - QUT Mineral Atlas
12 - Ruff.Info

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

Ferroholmquistite

[ ](Li2Fe++3Al2)Si8O22(OH)2
Dana No: 66.01.02.11 Strunz No: 09.DE.05
Locality:

 

Notes:

 

 
   
 


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