Ferroaluminoceladonite Mineral Data

General Ferroaluminoceladonite Information

Chemical Formula:

K2Fe++2Al2Si8O20(OH)4

Composition:

Molecular Weight = 856.56 gm

Potassium 9.13 % K 11.00 % K₂O

Aluminum 6.30 % Al 11.90 % Al₂O₃

Iron 13.04 % Fe 16.78 % FeO

Silicon 26.23 % Si 56.12 % SiO₂

Hydrogen 0.47 % H 4.21 % H₂O

Oxygen 44.83 % O

______ ______

100.00 % 100.00 % = TOTAL OXIDE

Empirical Formula:

K₂Fe²⁺₂Al₂(Si₈O₂₀)(OH)₄

Environment:

In an altered crystal-vitric tuff intergrown with ferroceladonite.

IMA Status:

Approved IMA 1995 (Dana # Added)

Locality:

Hokonui Hills, Southland, New Link to MinDat.org Location Data.

Name Origin:

Named from its composition (Fe++,Al) and the French 'celadon,' sea-green, in allusion to its common color.

Synonym:

Ferro-aluminoceladonite - Renamed Ferroaluminoceladonite by Mineralogical Record, v39 (2008), p131

IMA1995-019

Search for Ferroaluminoceladonite Images

Images:

Image not yet available on Webmineral.com

Try searching images.google.com or Mindat Picture Gallary for mineral pictures. Caution: The images retrieved may not be appropriate.

Ferroaluminoceladonite Crystallography

Axial Ratios:

a:b:c =0.5787:1:1.1119

Cell Dimensions:

a = 5.27, b = 9.106, c = 10.125, Z = 1; beta = 100.266° V = 478.11 Den(Calc)= 2.97

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): 3.321(1), 3.358(0.86), 3.09(0.6),

Physical Properties of Ferroaluminoceladonite

Cleavage:

{001} Perfect

Color:

Dark bluish green.

Density:

2.93

Diaphaneity:

Translucent to opaque

Fracture:

Earthy - Dull, clay-like fractures with no visible crystalline affinities, (e.g. howlite).

Habit:

Microscopic Crystals - Crystals visible only with microscopes.

Hardness:

2-2.5 - Gypsum-Finger Nail

Luster:

Earthy (Dull)

Streak:

paler green

Optical Properties of Ferroaluminoceladonite

Gladstone-Dale:

CI meas= -0.022 (Excellent) - where the CI = (1-KPDmeas/KC)
CI calc= -0.008 (Superior) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2104,KPDmeas= 0.2133,KC= 0.2088
Ncalc = 1.61 - 1.62

Optical Data:

Biaxial (?), b=1.625

Calculated Properties of Ferroaluminoceladonite

Electron Density:

Bulk Density (Electron Density)=2.94 gm/cc
note: Specific Gravity of Ferroaluminoceladonite =2.97 gm/cc.

Fermion Index:

Fermion Index = 0.01
Boson Index = 0.99

Photoelectric:

PE_{Ferroaluminoceladonite}= 5.95 barns/electron
U=PE_{Ferroaluminoceladonite} x r_electron= 17.49 barns/cc.

Radioactivity:

GRapi = 130.40 (Gamma Ray American Petroleum Institute Units)
Concentration of Ferroaluminoceladonite per GRapi unit = 0.77 (%)

Estimated Radioactivity from Ferroaluminoceladonite - barely detectable

Ferroaluminoceladonite Classification

Dana Class:

71.02.02a.06c (71)Phyllosilicate Sheets of Six-Membered Rings

(71.02)with 2:1 Layers

(71.02.02a)Mica Group (Muscovite subgroup)

71.02.02a.01 Muscovite KAl2(Si3Al)O10(OH,F)2 C 2/m 2/m

71.02.02a.02 Paragonite NaAl2(Si3Al)O10(OH)2 C 2/c,Cc Mono

71.02.02a.03 Chernykhite (Ba,Na)V,Al)2(Si,Al)4O10(OH)2 C 2/c 2/m

71.02.02a.04 Roscoelite K(V,Al,Mg)2AlSi3O10(OH)2 C 2/m 2/m

71.02.02a.05 Glauconite (K,Na)(Fe,Al,Mg)2(Si,Al)4O10(OH)2 C 2/m 2/m

71.02.02a.06 Celadonite K(Mg,Fe)(Fe,Al)[Si4O10](OH)2 C 2/m 2/m

71.02.02a.06b Ferroceladonite! K2FeFeSi8O20(OH)4 C 2/m 2/m

71.02.02a.06c Ferroaluminoceladonite! K2Fe2Al2Si8O20(OH)4 C 2/m 2/m

71.02.02a.06d Aluminoceladonite! KAl(Mg,Fe)[]Si4O10(OH)2 2/m

71.02.02a.06e Chromceladonite! KCrMg(Si4O10)(OH)2 C 2 2

71.02.02a.07 Tobelite (NH4,K)Al2(Si3Al)O10(OH)2 C 2/m 2/m

71.02.02a.08 Nanpingite Cs(Al,Mg,Fe,Li)2(Si3Al)O10(OH,F)2 C 2/c 2/m

71.02.02a.09 Boromuscovite KAl2(Si3B)O10(OH,F)2 C 2/m 2/m

71.02.02a.10 Montdorite (K,Na)(Fe,Mn,Mg)2.5[Si4O10](F,OH)2 C 2/c 2/m

71.02.02a.11 Chromphyllite! (K,Ba)(Cr,Al)2[AlSi3O10](OH,F)2 C 2c 2/m

71.02.02a.12 Shirokshinite! K(NaMg2)Si4O10F2 C 2/m 2/m

Strunz Class:

09.EC.15 09 - SILICATES (Germanates)

09.E - Phyllosilicates

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

09.EC.15 Boromuscovite KAl2(Si3B)O10(OH,F)2 C 2/m 2/m

09.EC.15 Celadonite K(Mg,Fe)(Fe,Al)[Si4O10](OH)2 C 2/m 2/m

09.EC.15 Chernykhite (Ba,Na)V,Al)2(Si,Al)4O10(OH)2 C 2/c 2/m

09.EC.15 Chromphyllite! (K,Ba)(Cr,Al)2[AlSi3O10](OH,F)2 C 2c 2/m

09.EC.15 Glauconite (K,Na)(Fe,Al,Mg)2(Si,Al)4O10(OH)2 C 2/m 2/m

09.EC.15 Aluminoceladonite! KAl(Mg,Fe)[]Si4O10(OH)2 2/m

09.EC.15 Ferroaluminoceladonite! K2Fe2Al2Si8O20(OH)4 C 2/m 2/m

09.EC.15 Ferroceladonite! K2FeFeSi8O20(OH)4 C 2/m 2/m

09.EC.15 Montdorite (K,Na)(Fe,Mn,Mg)2.5[Si4O10](F,OH)2 C 2/c 2/m

09.EC.15 Nanpingite Cs(Al,Mg,Fe,Li)2(Si3Al)O10(OH,F)2 C 2/c 2/m

09.EC.15 Tobelite (NH4,K)Al2(Si3Al)O10(OH)2 C 2/m 2/m

09.EC.15 Roscoelite K(V,Al,Mg)2AlSi3O10(OH)2 C 2/m 2/m

09.EC.15 Muscovite KAl2(Si3Al)O10(OH,F)2 C 2/m 2/m

09.EC.15 Paragonite NaAl2(Si3Al)O10(OH)2 C 2/c,Cc Mono

09.EC.15 Tainiolite KLiMg2Si4O10F2 C 2/m 2/m

09.EC.15 Chromceladonite! KCrMg(Si4O10)(OH)2 C 2 2

09.EC.15 Ganterite! [Ba0.5(Na,K)0.5]Al2(Si2.5Al1.5O10)(OH)2 C 2/c 2/m

Other Ferroaluminoceladonite Information

References:

NAME( MinRec) PHYS. PROP.(Am.Min.,Vol.82,p503-511,1997) OPTIC PROP.(Am.Min.,Vol.82,p503-511,1997)

See Also:

Links to other databases for Ferroaluminoceladonite :
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 Ferroaluminoceladonite using:

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

Visit our Advertisers for Ferroaluminoceladonite :

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

Ask about Ferroaluminoceladonite 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 Ferroaluminoceladonite Specimen Label here :

Ferroaluminoceladonite

K2Fe++2Al2Si8O20(OH)4
Dana No: 71.02.02a.06c Strunz No: 09.EC.15
Locality:

Notes: