Clinoholmquistite Mineral Data

General Clinoholmquistite Information
Help on Chemical Formula: Chemical Formula: [ ](Li2Mg3Al2)Si8O22(OH)2
Help on Composition: Composition: Molecular Weight = 794.83 gm
   Potassium   0.20 %  K     0.24 % K2O
   Sodium      1.30 %  Na    1.75 % Na2O
   Lithium     1.63 %  Li    3.52 % Li2O
   Calcium     1.31 %  Ca    1.83 % CaO
   Magnesium   5.90 %  Mg    9.79 % MgO
   Manganese   0.35 %  Mn    0.45 % MnO
   Aluminum    7.50 %  Al   14.17 % Al2O3
   Iron        5.13 %  Fe    6.15 % FeO /  0.50 % Fe2O3
   Silicon    28.27 %  Si   60.47 % SiO2
   Hydrogen    0.02 %  H     0.20 % H2O
   Oxygen     46.62 %  O
   Fluorine    1.77 %  F     1.77 % F
                -   %  F    -0.74 % -O=F2
             ______        ______ 
             100.00 %      100.10 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Na0.45Ca0.05K0.04Li1.79Ca0.21Al2.21Mg1.93Fe2+0.68Li0.08Mn2+0.05Fe3+0.05Si8O22.98 F0.74(OH)0.18
Help on Environment: Environment: Occurs at the inner contact with lithium pegmatite around oligoclase andesite. Discredited as a mixture of two distinct amphibole compositions, tremolite and a new amphibole end-mem ber, Fluoro-sodic-pedrizite,
Help on IMA Status: IMA Status: Discredited IMA 2005
Help on Locality: Locality: Tastyg spodumene deposit, Tuva, Siberia, Russia, Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for its monoclinic crystal structure and relationship with holmsquisite. Approved IMA 1985, Discredited IMA 2005.
Help on Synonym: Synonym: Discredited
 

Clinoholmquistite Image

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Clinoholmquistite   Magnesioclinoholmquistite   Fluoro-sodic-pedrizite

Comments: Dark blue fibrous clinoholmquistite with radiating structure, variety magnesioclinoholmquistite. Clinoholmsquitite may be a new aphibole, fluoro-sodic-pedrizite..
Location: Near Murun, Republic of Sakha, Siberia, Russia. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Clinoholmquistite Crystallography
Help on Axial Ratios: Axial Ratios: a:b:c =0.5496:1:0.2972
Help on Cell Dimensions: Cell Dimensions: a = 9.8, b = 17.83, c = 5.3, Z = 2; beta = 109.1° V = 875.11 Den(Calc)= 3.02
Help on Crystal System: Crystal System: Monoclinic - PrismaticH-M Symbol (2/m) Space Group: C 2/m
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 7.93(1), 2.99(1), 2.7(1),1.39(0.9), 4.4(0.9), 1.61(0.8), 1.57(0.7), 3.47(0.5),
 

Physical Properties of Clinoholmquistite

Help on Cleavage: Cleavage: [110] Good, [110] Good
Help on Color: Color: Blue gray, Gray lilac.
Help on Density: Density: 3
Help on Diaphaniety: Diaphaniety: Transparent to Translucent
Help on Fracture: Fracture: Brittle - Splintery - Brittle fracture leaving splintery fragments.
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)
Help on Streak: Streak: white
 

Optical Properties of Clinoholmquistite

Help on Optical Data: Optical Data: Biaxial (-), a=1.61, b=1.627, g=1.633, bire=0.0230, 2V(Calc)=60, 2V(Meas)=55-61.
 

Calculated Properties of Clinoholmquistite

Help on Electron Density: Electron Density:

relectron=2.98 gm/cc
note: rClinoholmquistite =3.02 gm/cc.
Help on Fermion Index Fermion Index Fermion Index = 0.02165
Boson Index = 0.97835
Help on Photoelectric: Photoelectric:

PEClinoholmquistite = 3.26 barns/electron
U=PEClinoholmquistite x relectron= 9.72 barns/cc.
Help on Radioactivity: Radioactivity:

GRapi = 2.82 (Gamma Ray American Petroleum Institute Units)

Estimated Radioactivity from Clinoholmquistite - barely detectable

 

Clinoholmquistite Classification
Help on Dana Class: Dana Class: 66.1.1.7 (66)Inosilicate Double-Width Unbranched Chains, W=2
  (66.1)Dana Type
  (66.1.1)Group 1, the Mg-Fe-Mn-Li amphiboles (Monoclinic)
 
66.1.1.1 Magnesiocummingtonite (Mg,Fe)7Si8O22(OH)2 C 2/m 2/m
 
66.1.1.2 Cummingtonite []Mg7Si8O22(OH)2 C 2/m 2/m
 
66.1.1.3 Grunerite []Fe7Si8O22(OH)2 C 2/m 2/m
 
66.1.1.3b Permanganogrunerite! []Mn4(Fe)3(Si8O22)(OH)2 C 2/m 2/m
 
66.1.1.4 Manganocummingtonite Na(Na,Mn)2(Mg4,Fe)5Si8O22(OH)2 C 2/m 2/m
 
66.1.1.5 Manganogrunerite []Mn2Fe5Si8O22(OH) C 2/m 2/m
 
66.1.1.6 Magnesioclinoholmquistite? Li2(Mg,Fe)3Al2Si8O22(OH)2 C 2/m 2/m
 
66.1.1.7 Clinoholmquistite ? [](Li2Mg3Al2)Si8O22(OH)2 C 2/m 2/m
 
66.1.1.8 Clinoferroholmquistite [](Li2Fe3Al2)Si8O22(OH)2 C 2/m 2/m
 
66.1.1.8a Ferri-clinoholmquistite! []Li2Mg3(Fe3)2(Si8O22)(OH)2 C 2/m 2/m
 
66.1.1.8b Ferri-clinoferroholmquistite! []Li2(Fe2Fe3)Si8O22(OH)2 C 2/m 2/m
 
66.1.1.9 Sodic-ferripedrizite! Na(LiNa)(Fe2Mg2Li)Si8O22(OH,F)2 C 2/m 2/m
 
66.1.1.9a Ferripedrizite! NaLi2(Fe2Mg2Li)Si8O22(OH)2 C 2/m 2/m
 
66.1.1.9b Sodic-ferri-ferropedrizite! NaLi2(Fe2Fe3)Si8O22(OH)2 C 2/m 2/m
 
66.1.1.9c Fluoro-sodic-pedrizite! NaLi2(Mg2Al2Li)S5Si8O22F2 C 2/m 2/m
Help on Strunz Class: Strunz Class: VIII/F.07-70 VIII - Silicates
  VIII/F - Inosilicates (chain and band) double chains [Si4O11]6- , Mg-Fe-Mn-Amphiboles
  VIII/F.07 - Amphibole group, Magnesiocummingtonite - Ferroclinoholmquistite series
 
VIII/F.07-10 Magnesiocummingtonite (Mg,Fe)7Si8O22(OH)2 C 2/m 2/m
 
VIII/F.07-20 Cummingtonite []Mg7Si8O22(OH)2 C 2/m 2/m
 
VIII/F.07-30 Grunerite []Fe7Si8O22(OH)2 C 2/m 2/m
 
VIII/F.07-40 Manganocummingtonite Na(Na,Mn)2(Mg4,Fe)5Si8O22(OH)2 C 2/m 2/m
 
VIII/F.07-50 Manganogrunerite []Mn2Fe5Si8O22(OH) C 2/m 2/m
 
VIII/F.07-55 Permanganogrunerite! []Mn4(Fe)3(Si8O22)(OH)2 C 2/m 2/m
 
VIII/F.07-60 Magnesioclinoholmquistite? Li2(Mg,Fe)3Al2Si8O22(OH)2 C 2/m 2/m
 
VIII/F.07-70 Clinoholmquistite [](Li2Mg3Al2)Si8O22(OH)2 C 2/m 2/m
 
VIII/F.07-80 Clinoferroholmquistite [](Li2Fe3Al2)Si8O22(OH)2 C 2/m 2/m
 
VIII/F.07-90 Ferri-clinoferroholmquistite! []Li2(Fe2Fe3)Si8O22(OH)2 C 2/m 2/m
 

Other Clinoholmquistite Information
Help on References: References: NAME( Dana8, AmMin 90:732) PHYS. PROP.(Dana8, AmMin 90:732) OPTIC PROP.(Enc. of Minerals,2nd ed.,1990)
Help on See Also: See Also: Links to other databases for Clinoholmquistite :
1 -Am. Min. Crystal Structure Database 2 -Athena 3 - EUROmin Project 4 -Google Images 5 -Google Scholar 6 -Handbook of Mineralogy (MinSocAm) 7 -Handbook of Mineralogy (UofA) 8 -MinDAT 9 -MinMax(Deutsch) 10 -MinMax(English) 11 -Mineralienatlas (Deutsch) 12 -QUT Mineral Atlas 13 - WWW-MINCRYST 14 -École des Mines de Paris

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

Clinoholmquistite

[ ](Li2Mg3Al2)Si8O22(OH)2
Dana No: 66.1.1.7 Strunz No: VIII/F.07-70
Locality:

 

Notes:

 
 
   
 
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