Glagolevite Mineral Data

General Glagolevite Information

Chemical Formula:

NaMg6[Si3AlO10](OH,O)8•H2O

Composition:

Molecular Weight = 592.47 gm

Sodium 2.95 % Na 3.98 % Na₂O

Magnesium 22.77 % Mg 37.76 % MgO

Aluminum 7.15 % Al 13.51 % Al₂O₃

Iron 0.28 % Fe 0.36 % FeO

Silicon 13.84 % Si 29.61 % SiO₂

Hydrogen 1.65 % H 14.70 % H₂O

Oxygen 51.36 % O

______ ______

100.00 % 99.92 % = TOTAL OXIDE

Empirical Formula:

Na_0.76Mg_5.55Al_0.49Fe²⁺_0.03Si_2.92Al_1.08O_10.35(OH)_7.67�(H₂O)

Environment:

From a phlogopite deposit

IMA Status:

Approved IMA 2001 (Dana # Added)

Locality:

Kovdor massif, Kola Peninsula, Russia. Link to MinDat.org Location Data.

Name Origin:

Named for A. A. Glagolev (1927-1993), Russian mineralogist.

Synonym:

IMA2001-064

Glagolevite Image

Images:

Glagolevite Andradite

Comments: Pearly white plates of glagolevite with olive-colored andradite dodecohedrons.
Location: Zheleznyi Mine (Iron Mine), Kovdor Massif, Kola Peninsula, Murmanskaja Oblast', Northern Region, Russia. Scale: Picture Size 12x10 mm.
© Pavel M. Kartashov

Glagolevite Crystallography

Axial Ratios:

a:b:c =0.5779:1:1.5818

Cell Dimensions:

a = 5.354, b = 9.263, c = 14.653, Z = 2; alpha = 89.86°, beta = 96.844°, gamma = 90.03° V = 721.52 Den(Calc)= 2.73

Crystal System:

Triclinic - Pedial H-M Symbol (1) Space Group: C1

$Help on X Ray Diffraction:$ X Ray Diffraction:

By Intensity(I/I_o): 1.544(1)(331,331,060), 2.556(1)(201,132,132), 2.992(0.6)(112.597(0.6)(131,202,131)2.457(0.5)(132,132,203)4.629(0.

Physical Properties of Glagolevite

Cleavage:

{001} Perfect

Color:

Colorless.

Density:

2.66

Diaphaneity:

Transparent

Fracture:

Flexible - Flexible fragments.

Habit:

Granular - Generally occurs as anhedral to subhedral crystals in matrix.

Hardness:

3-4 - Calcite-Fluorite

Luster:

Vitreous - Pearly

Streak:

white

Optical Properties of Glagolevite

Gladstone-Dale:

CI meas= 0.041 (Good) - where the CI = (1-KPDmeas/KC)
CI calc= 0.065 (Fair) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2087,KPDmeas= 0.2142,KC= 0.2233
Ncalc = 1.59 - 1.61

Optical Data:

Biaxial (+), a=1.569, b=1.569, g=1.571, bire=0.0020, 2V(Calc)=0, 2V(Meas)=17. Dispersion dispersion not observed.

Calculated Properties of Glagolevite

Electron Density:

Bulk Density (Electron Density)=2.68 gm/cc
note: Specific Gravity of Glagolevite =2.66 gm/cc.

Fermion Index:

Fermion Index = 0.02
Boson Index = 0.98

Photoelectric:

PE_Glagolevite= 1.41 barns/electron
U=PE_Glagolevite x rElectron Density= 3.77 barns/cc.

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Glagolevite is Not Radioactive

Glagolevite Classification

Dana Class:

71.04.02.09 (71)Phyllosilicate Sheets of Six-Membered Rings

(71.04)interlayered 1:1, 2:1, and octahedra

(71.04.02)Interstratified Chlorite-Smectite group

71.04.02.01 Dozyite (Mg7Al2)(Si4Al2)O15(OH)12 Cm m

71.04.02.02 Lunijianlaite LiAl6(Si7Al)O20(OH)10 Unk Mono

71.04.02.03 Saliotite Na0.5Li0.5Al3AlSi3O10(OH)5 C 2/m 2/m

71.04.02.04 Tosudite Na0,5(Al,Mg)6(Si,Al)8O18(OH)12•5(H2O) Unk Ortho

71.04.02.05 Corrensite (Ca,Na,K)(Mg,Fe,Al)9(Si,Al)8O20(OH)10•n(H2O) Unk Ortho

71.04.02.06 Kulkeite Na0.35Mg8AlSi7O20(OH)10 Unk Mono

71.04.02.07 Rectorite (Na,Ca)Al4(Si,Al)8O20(OH)4•2(H2O) Unk Mono

71.04.02.08 Aliettite [Mg3Si4O10(OH)2](Ca0.5,Na)0.33(Al,Mg,Fe)2-3(Si,Al)4O10(OH)2•n(H2O) Unk Mono

71.04.02.09 Glagolevite! NaMg6[Si3AlO10](OH,O)8•H2O C1 1

Strunz Class:

09.EC.55 09 - SILICATES (Germanates)

09.E - Phyllosilicates

09.EC -Phyllosilicates with mica sheets, composed of tetrahedral and octahedral nets

09.EC.55 Donbassite Al2[Al2.33][Si3AlO10](OH)8 C 2/m 2/m

09.EC.55 Baileychlore (Zn,Al,[])3[Fe2Al][Si3AlO10](OH)8 C1,C1 Tri

09.EC.55 Clinochlore (Mg,Fe)5Al(Si3Al)O10(OH)8 C 2/m 2/m

09.EC.55 Cookeite LiAl4(Si3Al)O10(OH)8 P 2₁/a 2/m

09.EC.55 Chamosite (Fe,Mg,Fe)5Al(Si3Al)O10(OH,O)8 C 2/m 2/m

09.EC.55 Franklinfurnaceite Ca2(Fe,Al)MnMn3Zn2Si2O10(OH)8 C 2 2

09.EC.55 Nimite (Ni,Mg,Fe)5Al(Si3Al)O10(OH)8 C 2/m 2/m

09.EC.55 Gonyerite Mn3[Mn3Fe][(Si,Fe)4O10](OH,O)8 pseudo-HEX Ortho

09.EC.55 Odinite (Fe,Mg,Al,Fe,Ti,Mn)2.5(Si,Al)2O5(OH)4 Cm m

09.EC.55 Orthochamosite (Fe,Mg,Fe)5Al(Si3Al)O10(OH,O)8 C3m-pseudoHEX Ortho

09.EC.55 Pennantite Mn5Al(Si3Al)O10(OH)8 C 2/m 2/m

09.EC.55 Sudoite Mg2(Al,Fe)3Si3AlO10(OH)8 C 2/m 2/m

09.EC.55 Glagolevite! NaMg6[Si3AlO10](OH,O)8•H2O C1 1

09.EC.55 Borocookeite! Li(13x)Al(4-x)(BSi3)O10(OH,F)8[x=0-0.33] pseudo C 2/m 2/m

Other Glagolevite Information

References:

NAME( AmMin, 89:250) PHYS. PROP.(AmMin, 89:250) OPTIC PROP.(AmMin, 89:250)

See Also:

Links to other databases for Glagolevite :
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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Glagolevite

NaMg6[Si3AlO10](OH,O)8•H2O
Dana No: 71.04.02.09 Strunz No: 09.EC.55
Locality:

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