Ferri-clinoferroholmquistite Mineral Data (original) (raw)
General Ferri-clinoferroholmquistite Information
Chemical Formula:
[ ]Li2(Fe+++2Fe++3)Si8O22(OH)2
Composition:
Molecular Weight = 848.25 gm
Sodium 0.98 % Na 1.32 % Na2O
Lithium 1.78 % Li 3.84 % Li2O
Magnesium 3.04 % Mg 5.04 % MgO
Aluminum 0.83 % Al 1.56 % Al2O3
Iron 21.27 % Fe 13.13 % FeO / 15.81 % Fe2O3
Silicon 26.49 % Si 56.67 % SiO2
Hydrogen 0.21 % H 1.90 % H2O
Oxygen 44.87 % O
Fluorine 0.54 % F 0.54 % F
______ ______
100.00 % 99.58 % = TOTAL OXIDE
Empirical Formula:
Na0.28Li1.9Na0.08Fe3+1.68Fe2+1.55Mg1.06Li0.28Al0.26Si8O22(OH)1.79F0.24
Environment:
Metamorphic episyenites (deslicification and albitizaton of a cordierite-bearing porphyritic granite). New Group 5 amphibole classification.
IMA Status:
Approved IMA 2003 (Dana # Added)
Locality:
Pedriza Massif, Sierra del Guadarrama, Spain. Link to MinDat.org Location Data.
Name Origin:
Named for Johan Holmquist (1866-1946) and the Fe++ and Fe+++ clinoamphiboles.
Synonym:
IMA2001-066
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Ferri-clinoferroholmquistite Crystallography
Axial Ratios:
a:b:c =0.5286:1:0.2962
Cell Dimensions:
a = 9.462, b = 17.898, c = 5.302, Z = 2; beta = 101.88° V = 878.67 Den(Calc)= 3.21
Crystal System:
Monoclinic - PrismaticH-M Symbol (2/m) Space Group: C 2/m
X Ray Diffraction:
By Intensity(I/Io): 8.224(1)(110), 2.717(0.69)(151), 3.042(0.54)(310),2.492(0.32)(202), 3.42(0.3)(131), 4.474(0.3)(040), 1.389(0.27), 2.165(0.21)(261), 2.586(0.2)(061),
Crystal Structure:
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| | Oberti R , Camara F , Caballero J M , Ottolini L , The Canadian Mineralogist , 41 (2003) p.1345-1354, Sodic-ferri-ferropedrizite and ferri-clinoferroholmquistite: mineral data and, degree of order of the A-site cations in Li-rich amphiboles, Sequence number in the CNR-IGG database: SEQ 1043 | | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ |
Physical Properties of Ferri-clinoferroholmquistite
Cleavage:
{110} Good, {110} Good
Color:
Black.
Diaphaneity:
Translucent
Fracture:
Brittle - Uneven - Very brittle fracture producing uneven fragments.
Habit:
Anhedral Grains - Granular minerals without the expression of crystal shapes
Luster:
Vitreous (Glassy)
Streak:
gray
Optical Properties of Ferri-clinoferroholmquistite
Optical Data:
Biaxial (?)
NCalc= 1.73 - from Gladstone-Dale relationship (KC = 0.2267) where Ncalc=Dcalc*KC+1
Calculated Properties of Ferri-clinoferroholmquistite
Electron Density:
Bulk Density (Electron Density)=3.15 gm/cc
note: Specific Gravity of Ferri-clinoferroholmquistite =3.21 gm/cc.
Fermion Index:
Fermion Index = 0.02
Boson Index = 0.98
Photoelectric:
PEFerri-clinoferroholmquistite = 7.45 barns/electron
U=PEFerri-clinoferroholmquistite x rElectron Density= 23.50 barns/cc.
Radioactivity:
GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Ferri-clinoferroholmquistite is Not Radioactive
Ferri-clinoferroholmquistite Classification
Dana Class:
66.01.01.08b (66)Inosilicate Double-Width Unbranched Chains, W=2
(66.01)with P=2 amphibole configuration
(66.01.01)Group 1, the Mg-Fe-Mn-Li amphiboles (Monoclinic)
66.01.01.01 Magnesiocummingtonite (Mg,Fe)7Si8O22(OH)2 C 2/m 2/m
66.01.01.02 Cummingtonite []Mg7Si8O22(OH)2 C 2/m 2/m
66.01.01.03 Grunerite []Fe7Si8O22(OH)2 C 2/m 2/m
66.01.01.03b Permanganogrunerite! []Mn4(Fe)3(Si8O22)(OH)2 C 2/m 2/m
66.01.01.04 Manganocummingtonite Na(Na,Mn)2(Mg4,Fe)5Si8O22(OH)2 C 2/m 2/m
66.01.01.05 Manganogrunerite []Mn2Fe5Si8O22(OH) C 2/m 2/m
66.01.01.06 Magnesioclinoholmquistite? Li2(Mg,Fe)3Al2Si8O22(OH)2 C 2/m 2/m
66.01.01.07 Clinoholmquistite? [](Li2Mg3Al2)Si8O22(OH)2 C 2/m 2/m
66.01.01.08 Clinoferroholmquistite [](Li2Fe3Al2)Si8O22(OH)2 C 2/m 2/m
66.01.01.08a Ferri-clinoholmquistite! []Li2Mg3(Fe3)2(Si8O22)(OH)2 C 2/m 2/m
66.01.01.08b Ferri-clinoferroholmquistite! []Li2(Fe2Fe3)Si8O22(OH)2 C 2/m 2/m
66.01.01.09 Sodic-ferripedrizite! Na(LiNa)(Fe2Mg2Li)Si8O22(OH,F)2 C 2/m 2/m
66.01.01.09a Ferripedrizite! NaLi2(Fe2Mg2Li)Si8O22(OH)2 C 2/m 2/m
66.01.01.09b Sodic-ferri-ferropedrizite! NaLi2(Fe2Fe3)Si8O22(OH)2 C 2/m 2/m
66.01.01.09c Fluoro-sodic-pedrizite! NaLi2(Mg2Al2Li)S5Si8O22F2 C 2/m 2/m
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 Ferri-clinoferroholmquistite Information
References:
NAME( CanMin, v 41, p 1345) PHYS. PROP.(CanMin, v 41, p 1345) OPTIC PROP.(CanMin, v 41, p 1345)
See Also:
Links to other databases for Ferri-clinoferroholmquistite :
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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Print or Cut-and-Paste your Ferri-clinoferroholmquistite Specimen Label here :
Ferri-clinoferroholmquistite
[ ]Li2(Fe+++2Fe++3)Si8O22(OH)2
Dana No: 66.01.01.08b Strunz No: 09.DE.05
Locality:
Notes: