Aspidolite Mineral Data

Advertisment

Dakota Matrix was founded in 1996 and has offered systematic and rare mineral specimens online since 1998.

Adamsminerals.com- Online mineral store front for mineral collectors

Your premier supplier of quality mineral specimens from Southern Africa and the world at large

A Bijoux.com is an online store specialized in the sale on the internet of precious stones , gems , minerals and jewels for individuals and professionals

General Aspidolite Information

Chemical Formula:

NaMg3AlSi3O10(OH)2

Composition:

Molecular Weight = 410.89 gm

Potassium 0.95 % K 1.15 % K₂O

Sodium 5.04 % Na 6.79 % Na₂O

Magnesium 13.43 % Mg 22.27 % MgO

Titanium 0.58 % Ti 0.97 % TiO₂

Aluminum 12.15 % Al 22.95 % Al₂O₃

Iron 3.13 % Fe 4.02 % FeO

Silicon 17.50 % Si 37.43 % SiO₂

Hydrogen 0.48 % H 4.32 % H₂O

Oxygen 46.61 % O

Fluorine 0.14 % F 0.14 % F

- % F -0.06 % -O=F₂

______ ______

100.00 % 99.98 % = TOTAL OXIDE

Empirical Formula:

Na_0.9K_0.1Mg_2.27Al_0.41Fe²⁺_0.23Ti_0.05Al_1.44Si_2.56O₁₀(OH)_1.97F_0.03

Environment:

Found in Zone 4 (forsterite-diopside) of the contact aureole around the Kaizuki-yama granite. Renamed in 1998 from sodiumphlogopite by the IMA Mica commission. 1M polytype.

IMA Status:

Approved IMA 1980

Locality:

Found in waste rock in the Kawai pit of the Kasuga mine. Kasuga-mura, Gifu Prefecture, central Japan. Link to MinDat.org Location Data.

Name Origin:

The name is from the Greek "aspisidos", like a shield, alluding to the appearance of its crystals.

Name Pronunciation:

Aspidolite + Pronunciation

Synonym:

IMA2004-049

Natriumphlogopite - Renamed to Aspidolite - NOMENCLATURE OF THE MICAS, Thz Canadian Mineralogist, Vol. 36, pp. 90s-912 (1998)

Phlogopite-Na - Renamed to Aspidolite - NOMENCLATURE OF THE MICAS, Thz Canadian Mineralogist, Vol. 36, pp. 90s-912 (1998)

Sodium phlogopite - Renamed to Aspidolite - NOMENCLATURE OF THE MICAS, Thz Canadian Mineralogist, Vol. 36, pp. 90s-912 (1998)

Sodiumphlogopite

Aspidolite Image

Images:

Aspidolite

Comments: B&W thin section (PPL) of a clinopyroxene leuconorite showing Na-rich phlogopite surrounding corroded plagioclase (Pl). (AmMin, v86:29).
Location: Gabbroic crustal zenoliths form Volcan San Pedro, Chilean Andes. Scale: See Image.
© American Mineralogist

Aspidolite Crystallography

Axial Ratios:

a:b:c =0.5776:1:1.1048

Cell Dimensions:

a = 5.291, b = 9.16, c = 10.12, Z = 2; beta = 105.1° V = 473.54 Den(Calc)= 2.88

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): 2.62(1)(201,131,130,2009.73(0.8)(100 3.26(0.4)(003 4.57(0.4)(020,110,110 2.55(0.3)(023,131,113,12.45(0.2)(132

Physical Properties of Aspidolite

Cleavage:

{001} Perfect

Color:

Light brown, White, Greenish, Red.

Diaphaneity:

Transparent to Translucent

Fracture:

Brittle - Irregular - Very brittle fracture producing irregular fragments

Habit:

Platy - Sheet forms (e.g. micas).

Hardness:

2-3 - Gypsum-Calcite

Luster:

Vitreous - Pearly

Streak:

white

Optical Properties of Aspidolite

Gladstone-Dale:

CI calc= 0.098 (Poor) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.1904,KC= 0.2112
Ncalc = 1.61

Optical Data:

Biaxial (-), a=1.53, b=1.557, g=1.558, bire=0.0280

Calculated Properties of Aspidolite

Electron Density:

Bulk Density (Electron Density)=2.86 gm/cc
note: Specific Gravity of Aspidolite =2.88 gm/cc.

Fermion Index:

Fermion Index = 0.02
Boson Index = 0.98

Photoelectric:

PE_Aspidolite= 2.52 barns/electron
U=PE_Aspidolite x r_electron= 7.20 barns/cc.

Radioactivity:

GRapi = 13.62 (Gamma Ray American Petroleum Institute Units)
Concentration of Aspidolite per GRapi unit = 7.34 (%)

Estimated Radioactivity from Aspidolite - barely detectable

Aspidolite Classification

Dana Class:

71.02.02b.13 (71)Phyllosilicate Sheets of Six-Membered Rings

(71.02)with 2:1 Layers

(71.02.02b)Mica Group (Biotite subgroup)

71.02.02b.01 Phlogopite KMg3(Si3Al)O10(F,OH)2 C 2/m 2/m

71.02.02b.01a Tetraferriphlogopite! KMg3FeSi3O10(OH)2 2/m

71.02.02b.01b Shirozulite! KMn3(AlSi3)O10(OH,F)2 C 2/m 2/m

71.02.02b.01c Fluorophlogopite! KMg3(AlSi3)O10F2 C 2/m 2/m

71.02.02b.02 Biotite* K(Mg,Fe)3[AlSi3O10(OH,F)2 C 2/m 2/m

71.02.02b.03 Annite KFe3AlSi3O10(OH,F)2 C 2/m 2/m

71.02.02b.03a Fluorannite! KFe3AlSi3O10F2 C 2/m 2/m

71.02.02b.04 Tetraferriannite K(Fe,Mg)3(Fe,Al)Si3O10(OH)2 C 2/m 2/m

71.02.02b.05 Siderophyllite KFe2Al(Al2Si2)O10(F,OH)2 C 2/m 2/m

71.02.02b.05a Eastonite! KMg2Al[Al2Si2O10](OH)2 2/m

71.02.02b.06 Hendricksite K(Zn,Mg,Mn)3Si3AlO10(OH)2 C 2/m 2/m

71.02.02b.07 Lepidolite K(Li,Al)3(Si,Al)4O10(F,OH)2 C 2/m,Cm Mono

71.02.02b.08 Polylithionite KLi2AlSi4O10(F,OH)2 C 2/m 2/m

71.02.02b.08a Trilithionite! KLi1.5Al1.5AlSi3O10F2 C 2/m 2/m

71.02.02b.08b Sokolovaite! CsLi2AlSi4O10F2 C 2/m, C 2 or Cm Mono

71.02.02b.09 Tainiolite KLiMg2Si4O10F2 C 2/m 2/m

71.02.02b.10 Zinnwaldite KLiFeAl(AlSi3)O10(F,OH)2 C 2/m 2/m

71.02.02b.11 Norrishite K(Mn2Li)Si4O10(O)2 C 2/m 2/m

71.02.02b.12 Masutomilite K(Li,Al,Mn)3[(Si,Al)4O10](F,OH)2 C 2/m 2/m

71.02.02b.13 Aspidolite NaMg3AlSi3O10(OH)2 C 2/m 2/m

71.02.02b.14 Wonesite (Na,K).5(Mg,Fe,Al)3(Si,Al)4O10(OH,F)2 C 2/m 2/m

71.02.02b.15 Preiswerkite NaMg2Al3Si2O10(OH)2 C 2/m 2/m

71.02.02b.16 Ephesite NaLiAl2(Al2Si2)O10(OH)2 C 2/c 2/m

71.02.02b.18 Suhailite! (NH4)Fe3(Si3Al)O10(OH)2 C 2/m? 2/m

Strunz Class:

09.EC.20 09 - SILICATES (Germanates)

09.E - Phyllosilicates

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

09.EC.20 Annite KFe3AlSi3O10(OH,F)2 C 2/m 2/m

09.EC.20 Biotite* K(Mg,Fe)3[AlSi3O10(OH,F)2 C 2/m 2/m

09.EC.20 Hendricksite K(Zn,Mg,Mn)3Si3AlO10(OH)2 C 2/m 2/m

09.EC.20 Ephesite NaLiAl2(Al2Si2)O10(OH)2 C 2/c 2/m

09.EC.20 Aspidolite NaMg3AlSi3O10(OH)2 C 2/m 2/m

09.EC.20 Lepidolite K(Li,Al)3(Si,Al)4O10(F,OH)2 C 2/m,Cm Mono

09.EC.20 Preiswerkite NaMg2Al3Si2O10(OH)2 C 2/m 2/m

09.EC.20 Masutomilite K(Li,Al,Mn)3[(Si,Al)4O10](F,OH)2 C 2/m 2/m

09.EC.20 Wonesite (Na,K).5(Mg,Fe,Al)3(Si,Al)4O10(OH,F)2 C 2/m 2/m

09.EC.20 Polylithionite KLi2AlSi4O10(F,OH)2 C 2/m 2/m

09.EC.20 Phlogopite KMg3(Si3Al)O10(F,OH)2 C 2/m 2/m

09.EC.20 Norrishite K(Mn2Li)Si4O10(O)2 C 2/m 2/m

09.EC.20 Siderophyllite KFe2Al(Al2Si2)O10(F,OH)2 C 2/m 2/m

09.EC.20 Fluorannite! KFe3AlSi3O10F2 C 2/m 2/m

09.EC.20 Shirokshinite! K(NaMg2)Si4O10F2 C 2/m 2/m

09.EC.20 Zinnwaldite KLiFeAl(AlSi3)O10(F,OH)2 C 2/m 2/m

09.EC.20 Eastonite! KMg2Al[Al2Si2O10](OH)2 2/m

09.EC.20 Tetraferriannite K(Fe,Mg)3(Fe,Al)Si3O10(OH)2 C 2/m 2/m

09.EC.20 Tetraferriphlogopite! KMg3FeSi3O10(OH)2 2/m

09.EC.20 Trilithionite! KLi1.5Al1.5AlSi3O10F2 C 2/m 2/m

09.EC.20 Sokolovaite! CsLi2AlSi4O10F2 C 2/m, C 2 or Cm Mono

09.EC.20 Shirozulite! KMn3(AlSi3)O10(OH,F)2 C 2/m 2/m

09.EC.20 Suhailite! (NH4)Fe3(Si3Al)O10(OH)2 C 2/m? 2/m

09.EC.20 Fluorophlogopite! KMg3(AlSi3)O10F2 C 2/m 2/m

Other Aspidolite Information

References:

NAME( AmMin, v91, p1208) PHYS. PROP.(AmMin, v91:1208 & MinMag, v69:1047) OPTIC PROP.(AmMin, v91, p1208)

See Also:

Links to other databases for Aspidolite :
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

Search for Aspidolite using:

[AOL] [Bing] [Dog Pile] [GeoScienceWorld] [HotBot] [Ixquick] [Lycos] [MAMMA] [Scirus] [Teoma] [WebCrawler] [Wikipedia] [YAHOO]

Visit our Advertisers for Aspidolite :

A Bijoux Google Search for Aspidolite
Adam's Minerals Google Search for Aspidolite
Cape Minerals Google Search for Aspidolite
Dakota Matrix Minerals Google Search for Aspidolite
Excalibur Mineral Corp. Google Search for Aspidolite
Exceptional Minerals Google Search for Aspidolite
John Betts Fine Minerals Search for Aspidolite
McDougall Minerals Google Search for Aspidolite
Mineral News Website Link
Rock and Mineral Shows Google Search for Aspidolite
Weinrich Minerals, Inc. Google Search for Aspidolite

Ask about Aspidolite here :
Ask-A-Mineralogist from the Mineralogical Society of America
Mindat.org's Discussion Groups
Original Rockhounds Discussion Group
Rockhounds Discussion Group on Yahoo Groups
Mineral Discussion Forum from Fabre Minerals - also available in Español

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

Aspidolite

NaMg3AlSi3O10(OH)2
Dana No: 71.02.02b.13 Strunz No: 09.EC.20
Locality:

Notes: