Tainiolite Mineral Data

Tainiolite Mineral Data +

General Tainiolite Information

Chemical Formula:

KLiMg2Si4O10F2

Composition:

Molecular Weight = 404.98 gm

Potassium 9.65 % K 11.63 % K₂O

Lithium 1.71 % Li 3.69 % Li₂O

Magnesium 12.00 % Mg 19.90 % MgO

Silicon 27.74 % Si 59.35 % SiO₂

Oxygen 39.51 % O

Fluorine 9.38 % F 9.38 % F

- % F -3.95 % -O=F₂

______ ______

100.00 % 100.00 % = TOTAL OXIDE

Empirical Formula:

KLiMg₂Si₄O₁₀F₂

Environment:

Nepheline-syenite pegmatites.

IMA Status:

Valid Species (Pre-IMA) 1900

Locality:

Narsarsuk, southern Greenland. Link to MinDat.org Location Data.

Name Origin:

Named from the Greek for "band" or "strip", inallusion to hte tabular habit of the crystals.

Synonym:

Taeniolite

Tainiolite Image

Images:

Tainiolite

Comments: Micaceous tainiolite aggregate.
Location: Magnet Cove, Hot Spring County, Arkansas, USA. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Tainiolite Crystallography

Axial Ratios:

a:b:c =0.577:1:1.1185

Cell Dimensions:

a = 5.231, b = 9.065, c = 10.14, Z = 2; beta = 99.86° V = 473.73 Den(Calc)= 2.84

Crystal System:

Monoclinic - PrismaticH-M Symbol (2/m) Space Group: C 2/m

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

By Intensity(I/I_o): 3.33(1), 9.95(0.9), 2.4(0.4),4.98(0.4), 3.11(0.3), 4.48(0.3), 4.51(0.3),

Crystal Structure:

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Toraya H , Iwai S , Marumo F , Hirao M , Zeitschrift fur Kristallographie , 146 (1977) p.73-83, The crystal structure of taeniolite, KLiMg2Si4O10F2, Note: this is the 1M polytype, Locality: synthetic

Physical Properties of Tainiolite

Cleavage:

[001] Perfect

Color:

Brownish, Colorless, Greenish brown.

Density:

2.9

Diaphaniety:

Transparent

Fracture:

Flexible - Flexible fragments.

Habit:

Foliated - Two dimensional platy forms.

Habit:

Micaceous - Platy texture with "flexible" plates.

Hardness:

2.5-3 - Finger Nail-Calcite

Luminescence:

Fluorescent.

Luster:

Vitreous (Glassy)

Streak:

white

Optical Properties of Tainiolite

Gladstone-Dale:

CI meas= 0.058 (Good) - where the CI = (1-KPDmeas/KC)
CI calc= 0.038 (Excellent) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.1941,KPDmeas= 0.1901,KC= 0.2018

Optical Data:

Biaxial (-), a=1.522-1.54, b=1.553-1.57, g=1.553-1.57, bire=0.0300-0.0310, 2V(Calc)=0, 2V(Meas)=2-5. Dispersion r > v or r < v.

Pleochroism (x):

colorless.

Pleochroism (y):

colorless.

Pleochroism (z):

pale yellow.

Calculated Properties of Tainiolite

Electron Density:

r_electron=2.81 gm/cc
note: r_Tainiolite=2.84 gm/cc.

Fermion Index

Fermion Index = 0.02644
Boson Index = 0.97356

Photoelectric:

PE_Tainiolite= 2.36 barns/electron
U=PE_Tainiolite x r_electron= 6.62 barns/cc.

Radioactivity:

GRapi = 137.57 (Gamma Ray American Petroleum Institute Units)

Estimated Radioactivity from Tainiolite - barely detectable

Tainiolite Classification

Dana Class:

71.2.2b.9 (71)Phyllosilicate Sheets of Six-Membered Rings

(71.2)with 2:1 Layers

(71.2.2b)Mica Group (Biotite subgroup)

71.2.2b.1 Phlogopite KMg3(Si3Al)O10(F,OH)2 C 2/m 2/m

71.2.2b.1a Tetra-ferriphlogopite! KMg3FeSi3O10(OH)2 2/m

71.2.2b.1b Shirozulite! KMn3(AlSi3)O10(OH,F)2 C 2/m 2/m

71.2.2b.2 Biotite* K(Mg,Fe)3[AlSi3O10(OH,F)2 C 2/m 2/m

71.2.2b.3 Annite KFe3AlSi3O10(OH,F)2 C 2/m 2/m

71.2.2b.3a Fluorannite! KFe3AlSi3O10F2 C 2/m 2/m

71.2.2b.4 Tetra-ferri-annite K(Fe,Mg)3(Fe,Al)Si3O10(OH)2 C 2/m 2/m

71.2.2b.5 Siderophyllite KFe2Al(Al2Si2)O10(F,OH)2 C 2/m 2/m

71.2.2b.5a Eastonite! KMg2Al[Al2Si2O10](OH)2 2/m

71.2.2b.6 Hendricksite K(Zn,Mg,Mn)3Si3AlO10(OH)2 C 2/m 2/m

71.2.2b.7 Lepidolite K(Li,Al)3(Si,Al)4O10(F,OH)2 C 2/m,Cm Mono

71.2.2b.8 Polylithionite KLi2AlSi4O10(F,OH)2 C 2/m 2/m

71.2.2b.8a Trilithionite! KLi1.5Al1.5AlSi3O10F2 C 2/m 2/m

71.2.2b.8b Sokolovaite! CsLi2AlSi4O10F2 C 2/m, C 2 or Cm Mono

71.2.2b.9 Tainiolite KLiMg2Si4O10F2 C 2/m 2/m

71.2.2b.10 Zinnwaldite KLiFeAl(AlSi3)O10(F,OH)2 C 2/m 2/m

71.2.2b.11 Norrishite K(Mn2Li)Si4O10(O)2 C 2/m 2/m

71.2.2b.12 Masutomilite K(Li,Al,Mn)3[(Si,Al)4O10](F,OH)2 C 2/m 2/m

71.2.2b.13 Aspidolite NaMg3AlSi3O10(OH)2 C 2/m 2/m

71.2.2b.14 Wonesite (Na,K).5(Mg,Fe,Al)3(Si,Al)4O10(OH,F)2 C 2/m 2/m

71.2.2b.15 Preiswerkite NaMg2Al3Si2O10(OH)2 C 2/m 2/m

71.2.2b.16 Ephesite NaLiAl2(Al2Si2)O10(OH)2 C 2/c 2/m

71.2.2b.17 IMA2004-049! NaMg3(AlSi3)O10(OH)2 C 2/m 2/m

Strunz Class:

VIII/H.11-20 VIII - Silicates

VIII/H - Phyllosilicates (layered) Mica like layered silicates with [Si4O10]4- and related groups

VIII/H.11 - Mica group, Biotite series

VIII/H.11-00* Zinnwaldite KLiFeAl(AlSi3)O10(F,OH)2 C 2/m 2/m

VIII/H.11-10 Polylithionite KLi2AlSi4O10(F,OH)2 C 2/m 2/m

VIII/H.11-20 Tainiolite KLiMg2Si4O10F2 C 2/m 2/m

VIII/H.11-30 Norrishite K(Mn2Li)Si4O10(O)2 C 2/m 2/m

VIII/H.11-35 Shirokshinite! K(NaMg2)Si4O10F2 C 2/m 2/m

VIII/H.11-40 Montdorite (K,Na)(Fe,Mn,Mg)2.5[Si4O10](F,OH)2 C 2/c 2/m

VIII/H.11-50 Trilithionite! KLi1.5Al1.5AlSi3O10F2 C 2/m 2/m

VIII/H.11-60 Masutomilite K(Li,Al,Mn)3[(Si,Al)4O10](F,OH)2 C 2/m 2/m

VIII/H.11-70 Aspidolite NaMg3AlSi3O10(OH)2 C 2/m 2/m

VIII/H.11-80 Phlogopite KMg3(Si3Al)O10(F,OH)2 C 2/m 2/m

VIII/H.11-90 Tetra-ferriphlogopite! KMg3FeSi3O10(OH)2 2/m

VIII/H.11-100 Hendricksite K(Zn,Mg,Mn)3Si3AlO10(OH)2 C 2/m 2/m

VIII/H.11-102 Shirozulite! KMn3(AlSi3)O10(OH,F)2 C 2/m 2/m

VIII/H.11-105 Fluorannite! KFe3AlSi3O10F2 C 2/m 2/m

VIII/H.11-110 Annite KFe3AlSi3O10(OH,F)2 C 2/m 2/m

VIII/H.11-120 Tetra-ferri-annite K(Fe,Mg)3(Fe,Al)Si3O10(OH)2 C 2/m 2/m

VIII/H.11-130 Ephesite NaLiAl2(Al2Si2)O10(OH)2 C 2/c 2/m

VIII/H.11-140 Preiswerkite NaMg2Al3Si2O10(OH)2 C 2/m 2/m

VIII/H.11-150 Eastonite! KMg2Al[Al2Si2O10](OH)2 2/m

VIII/H.11-160 Siderophyllite KFe2Al(Al2Si2)O10(F,OH)2 C 2/m 2/m

Other Tainiolite Information

References:

NAME( Dana8) PHYS. PROP.(Dana) OPTIC PROP.(Dana8)

See Also:

Links to other databases for Tainiolite :
1 - Alkali-Nuts(English) 2 - Alkali-Nuts(Francais) 3 -Am. Min. Crystal Structure Database 4 - Amethyst Galleries' Mineral Gallery 5 -Athena 6 -Google Images 7 -Google Scholar 8 -MinDAT 9 -MinMax(Deutsch) 10 -MinMax(English) 11 -Mineralienatlas (Deutsch) 12 -QUT Mineral Atlas

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Tainiolite

KLiMg2Si4O10F2
Dana No: 71.2.2b.9 Strunz No: VIII/H.11-20
Locality:

Notes: