Ferrocarpholite Mineral Data

General Ferrocarpholite Information

Chemical Formula:

(Fe++,Mg)Al2Si2O6(OH)4

Composition:

Molecular Weight = 324.65 gm

Magnesium 1.50 % Mg 2.48 % MgO

Titanium 0.15 % Ti 0.25 % TiO₂

Manganese 0.17 % Mn 0.22 % MnO

Aluminum 15.54 % Al 29.37 % Al₂O₃

Iron 15.31 % Fe 17.93 % FeO / 1.97 % Fe₂O₃

Silicon 17.56 % Si 37.57 % SiO₂

Hydrogen 1.13 % H 10.10 % H₂O

Oxygen 48.64 % O

______ ______

100.00 % 99.88 % = TOTAL OXIDE

Empirical Formula:

Fe²⁺_0.81Mg_0.2Mn²⁺_0.01Al_1.87Fe³⁺_0.08Ti_0.01Si_2.03O_9.87H_3.64

Environment:

In quartz veins in blueschists of low metamorphic grade, formed from felsic tuffs at about 250 ±C and 3 kbar.

IMA Status:

Valid Species (Pre-IMA) 1951

Locality:

At several localities west of Tomata, Celebes, Indonesia. Link to MinDat.org Location Data.

Name Origin:

Named as the Fe-dominant member of the carpholite series.

Name Pronunciation:

Ferrocarpholite + Pronunciation

Synonym:

ICSD 34519

PDF 33-655

Ferrocarpholite Image

Images:

Ferrocarpholite

Comments: Pale yellow radiating ferrocarpholite crystals.
Location: Krasno, Zapadocesky, Czech Republic. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Ferrocarpholite Crystallography

Axial Ratios:

a:b:c =0.683:1:0.2532

Cell Dimensions:

a = 13.797, b = 20.2, c = 5.116, Z = 8; V = 1,425.83 Den(Calc)= 3.02

Crystal System:

Orthorhombic - DipyramidalH-M Symbol (2/m 2/m 2/m) Space Group: C cca

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

By Intensity(I/I_o): 5.04(1), 5.69(0.7), 3.355(0.3),

Crystal Structure:

Mouse
drag1 - LMB Manipulate Structure
drag2 - RMB Resize/Rotate
Keyboard
S - Stereo Pair on/off
H - Help Screen
I - Data Info
A - Atoms On/Off
P - Polyhedra On/Off
B - Bonds On/Off
Help on Above

Ferraris G , Ivaldi G , Goffe B , Neues Jahrbuch fur Mineralogie, Monatshefte , 1992 (1992) p.337-347, Structural study of a magnesian ferrocarpholite: Are carpholites monoclinic?, Locality: Mascate nappes, Ruwi, Oman

Physical Properties of Ferrocarpholite

Cleavage:

{010} Perfect, {110} Indistinct

Color:

Gray green, Dark green.

Density:

3.04

Diaphaneity:

Translucent

Hardness:

5.5 - Knife Blade

Luster:

Silky

Streak:

greenish white

Optical Properties of Ferrocarpholite

Gladstone-Dale:

CI meas= 0.062 (Fair) - where the CI = (1-KPDmeas/KC)
CI calc= 0.055 (Good) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2074,KPDmeas= 0.206,KC= 0.2195
Ncalc = 1.66 - 1.67

Optical Data:

Biaxial (-), a=1.614, b=1.63, g=1.635, bire=0.0210, 2V(Calc)=56, 2V(Meas)=58.

Calculated Properties of Ferrocarpholite

Electron Density:

Bulk Density (Electron Density)=3.00 gm/cc
note: Specific Gravity of Ferrocarpholite =3.02 gm/cc.

Fermion Index:

Fermion Index = 0.01
Boson Index = 0.99

Photoelectric:

PE_{Ferrocarpholite}= 5.74 barns/electron
U=PE_{Ferrocarpholite} x rElectron Density= 17.22 barns/cc.

Radioactivity:

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

Ferrocarpholite Classification

Dana Class:

65.01.05.02 (65)Inosilicate Single-Width Unbranched Chains, W=1

(65.01)with chains P=2

(65.01.05)Carpholite group

65.01.05.01 Carpholite MnAl2Si2O6(OH)4 C cca 2/m 2/m 2/m

65.01.05.02 Ferrocarpholite (Fe,Mg)Al2Si2O6(OH)4 C cca 2/m 2/m 2/m

65.01.05.03 Magnesiocarpholite MgAl2Si2O6(OH)4 C cca 2/m 2/m 2/m

65.01.05.04 Balipholite BaMg2LiAl3Si4O12(OH,F)8 C cca 2/m 2/m 2/m

65.01.05.05 Potassiccarpholite! (K,Na,[])(Li,Mn)2Al)4Si4O12(OH)4(F,OH)4 C cca 2/m 2/m 2/m

65.01.05.06 Vanadiocarpholite! MnVAl(Si2O6)(OH)4 C cca 2/m 2/m 2/m

Strunz Class:

09.DB.05 09 - SILICATES (Germanates)

09.D - Inosilicates* Structural terminology according to Liebau (1985)

09.DB -Inosilicates with 2-periodic single chains, Si2O6; Pyroxene-related minerals

09.DB.05 Carpholite MnAl2Si2O6(OH)4 C cca 2/m 2/m 2/m

09.DB.05 Balipholite BaMg2LiAl3Si4O12(OH,F)8 C cca 2/m 2/m 2/m

09.DB.05 Ferrocarpholite (Fe,Mg)Al2Si2O6(OH)4 C cca 2/m 2/m 2/m

09.DB.05 Magnesiocarpholite MgAl2Si2O6(OH)4 C cca 2/m 2/m 2/m

09.DB.05 Potassiccarpholite! (K,Na,[])(Li,Mn)2Al)4Si4O12(OH)4(F,OH)4 C cca 2/m 2/m 2/m

09.DB.05 Vanadiocarpholite! MnVAl(Si2O6)(OH)4 C cca 2/m 2/m 2/m

Other Ferrocarpholite Information

References:

NAME( AntBidBlaNic2) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Enc. of Minerals,2nd ed.,1990)

See Also:

Links to other databases for Ferrocarpholite :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - EUROmin Project
4 - Ecole des Mines de Paris
5 - GeoScienceWorld
6 - Google Images
7 - Google Scholar
8 - Handbook of Mineralogy (MinSocAm)
9 - Handbook of Mineralogy (UofA)
10 - MinDAT
11 - Mineralienatlas (Deutsch)
12 - Online Mineral Museum
13 - QUT Mineral Atlas
14 - Ruff.Info
15 - WWW-MINCRYST

Search for Ferrocarpholite using:

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

Visit our Advertisers for Ferrocarpholite :

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

Ask about Ferrocarpholite 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 Ferrocarpholite Specimen Label here :

Ferrocarpholite

(Fe++,Mg)Al2Si2O6(OH)4
Dana No: 65.01.05.02 Strunz No: 09.DB.05
Locality:

Notes: