Ferroceladonite Mineral Data

Advertisment

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

For more than thirty (30) years, Excalibur Mineral Corp. has been providing private collectors, researchers, major universities and museums throughout the world with reliably identified, rare and unusual mineral samples for science an

Exceptional Minerals features excellent, high quality mineral specimens for sale. We also have a weekly Best Offer Mineral Auction.

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 Ferroceladonite Information

Chemical Formula:

K2Fe++Fe+++Si8O20(OH)4

Composition:

Molecular Weight = 802.59 gm

Potassium 9.74 % K 11.74 % K₂O

Iron 13.92 % Fe 8.95 % FeO / 9.95 % Fe₂O₃

Silicon 27.99 % Si 59.89 % SiO₂

Hydrogen 0.50 % H 4.49 % H₂O

Oxygen 47.84 % O

______ ______

100.00 % 95.02 % = TOTAL OXIDE

Empirical Formula:

K₂Fe²⁺Fe³⁺(Si₈O₂₀)(OH)₄

Environment:

In an altered crystal-vitric tuff associated with ferroaluminoceladonite.

IMA Status:

Approved IMA 1995 (Dana # Added)

Locality:

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

Name Origin:

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

Name Pronunciation:

Ferroceladonite + Pronunciation

Synonym:

IMA1995-018

Ferroceladonite Image

Images:

Ferroceladonite

Comments: Micaceous ferro celadonite, comprising schistose rock.
Location: Mikhailovsky Mine, Malkhan Range, Central Transbaikalia, Chita District, Siberia, Russia. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Ferroceladonite 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)= 2.79

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 Ferroceladonite

Cleavage:

{001} Perfect

Color:

Dark bluish green.

Density:

3.05

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 Ferroceladonite

Gladstone-Dale:

CI meas= 0.006 (Superior) - where the CI = (1-KPDmeas/KC)
CI calc= -0.087 (Poor) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2294,KPDmeas= 0.2098,KC= 0.211
Ncalc = 1.59 - 1.64

Optical Data:

Biaxial (?), b=1.64

Calculated Properties of Ferroceladonite

Electron Density:

Bulk Density (Electron Density)=3.02 gm/cc
note: Specific Gravity of Ferroceladonite =3.05 gm/cc.

Fermion Index:

Fermion Index = 0.01
Boson Index = 0.99

Photoelectric:

PE_{Ferroceladonite}= 6.17 barns/electron
U=PE_{Ferroceladonite} x r_electron= 18.66 barns/cc.

Radioactivity:

GRapi = 139.42 (Gamma Ray American Petroleum Institute Units)
Concentration of Ferroceladonite per GRapi unit = 0.72 (%)

Estimated Radioactivity from Ferroceladonite - barely detectable

Ferroceladonite Classification

Dana Class:

71.02.02a.06b (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 Ferroceladonite 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 Ferroceladonite :
1 - Alkali-Nuts(English)
2 - Alkali-Nuts(Francais)
3 - Am. Min. Crystal Structure Database
4 - Athena
5 - GeoScienceWorld
6 - Google Images
7 - Google Scholar
8 - MinDAT
9 - Mineralienatlas (Deutsch)
10 - Online Mineral Museum
11 - QUT Mineral Atlas
12 - Ruff.Info

Search for Ferroceladonite using:

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

Visit our Advertisers for Ferroceladonite :

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

Ask about Ferroceladonite 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 Ferroceladonite Specimen Label here :

Ferroceladonite

K2Fe++Fe+++Si8O20(OH)4
Dana No: 71.02.02a.06b Strunz No: 09.EC.15
Locality:

Notes: