Calcioferrite Mineral Data

[Minerals] [Gems] [Sale Items] [Gold Rings] [Big Stuff] [Main Page]
Shop early for Holiday Season and get the best stuff.
You can put it on layaway for up to six weeks!

General Calcioferrite Information

Chemical Formula:

Ca4Fe++(Fe+++,Al)4(PO4)6(OH)4•12(H2O)

Composition:

Molecular Weight = 1,233.18 gm

Calcium 13.00 % Ca 18.19 % CaO

Magnesium 1.97 % Mg 3.27 % MgO

Aluminum 2.19 % Al 4.13 % Al₂O₃

Iron 13.59 % Fe 19.42 % Fe₂O₃

Phosphorus 15.07 % P 34.53 % P₂O₅

Hydrogen 2.29 % H 20.45 % H₂O

Oxygen 51.90 % O

______ ______

100.00 % 100.00 % = TOTAL OXIDE

Empirical Formula:

•12(H₂O)Ca₄MgFe³⁺₃Al(PO₄)₆(OH)₄

Environment:

Found in a bed of Tertiary clay. The Fe-analog of montgomeryite.

IMA Status:

Valid Species (Pre-IMA) 1858

Locality:

Battenberg, Bavaria, Germany. Link to MinDat.org Location Data.

Name Origin:

Named for its composition.

Name Pronunciation:

Calcioferrite + Pronunciation

Calcioferrite Image

Images:

Calcioferrite

Comments: Whitish green botryoidal crust of calcioferrite on matrix.
Location: Brugues, Barcelona, Catalunya, Spain. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Calcioferrite Crystallography

Axial Ratios:

a:b:c =0.4272:1:0.2607

Cell Dimensions:

a = 10.34, b = 24.2, c = 6.31, Z = 2; beta = 91.5° V = 1,578.40 Den(Calc)= 2.59

Crystal System:

Monoclinic - SphenoidalH-M Symbol (2) Space Group: C 2

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

By Intensity(I/I_o): 12.1(1), 1.578(0.9), 2.59(0.9),2.65(0.9), 2.9(0.9), 3.15(0.7), 5.17(0.6), 6.05(0.6),

Physical Properties of Calcioferrite

Cleavage:

{???} Perfect, {???} Very Good

Color:

Greenish yellow, Yellow, Yellow green, Yellowish white.

Density:

2.53

Diaphaneity:

Translucent to Opaque

Fracture:

Brittle - Generally displayed by glasses and most non-metallic minerals.

Habit:

Foliated - Two dimensional platy forms.

Habit:

Reniform - "Kidney like" in shape (e.g.. hematite).

Hardness:

2.5 - Finger Nail

Luster:

Pearly

Streak:

yellowish white

Optical Properties of Calcioferrite

Gladstone-Dale:

CI meas= 0.076 (Fair) - where the CI = (1-KPDmeas/KC)
CI calc= 0.097 (Poor) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2232,KPDmeas= 0.2285,KC= 0.2472
Ncalc = 1.63 - 1.64

Optical Data:

Biaxial (-), a=1.572, b=1.579, g=1.583, bire=0.0110, 2V(Calc)=72, 2V(Meas)=75.

Calculated Properties of Calcioferrite

Electron Density:

Bulk Density (Electron Density)=2.55 gm/cc
note: Specific Gravity of Calcioferrite =2.53 gm/cc.

Fermion Index:

Fermion Index = 0.0052792049
Boson Index = 0.9947207951

Photoelectric:

PE_{Calcioferrite}= 6.39 barns/electron
U=PE_{Calcioferrite} x rElectron Density= 16.29 barns/cc.

Radioactivity:

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

Calcioferrite Classification

Dana Class:

42.11.08.03 (42)Hydrated Phosphates, etc., Containing Hydroxyl or Halogen

(42.11)where (AB)4 (XO4)3 Zq · x(H2O)

(42.11.08)Montgomeryite group

42.11.08.01 Montgomeryite Ca4MgAl4(PO4)6(OH)4•12(H2O) C 2/c 2/m

42.11.08.02 Kingsmountite (Ca,Mn)4(Fe,Mn)Al4(PO4)6(OH)4•12(H2O) C 2 2

42.11.08.03 Calcioferrite Ca4Fe(Fe,Al)4(PO4)6(OH)4•12(H2O) C 2 2

42.11.08.04 Zodacite Ca4MnFe4(PO4)6(OH)4•12(H2O) C 2/c,Cc Mono

42.11.08.05 Angastonite! CaMgAl2(PO4)2(OH)4?7H2O P1 1

Strunz Class:

08.DH.25 08 - PHOSPHATES, ARSENATES, VANADATES

08.D - Phosphates, etc

08.DH -With large and medium-sized cations, (OH, etc.):RO4 < 1:1

08.DH.25 Calcioferrite Ca4Fe(Fe,Al)4(PO4)6(OH)4•12(H2O) C 2 2

08.DH.25 Kingsmountite (Ca,Mn)4(Fe,Mn)Al4(PO4)6(OH)4•12(H2O) C 2 2

08.DH.25 Montgomeryite Ca4MgAl4(PO4)6(OH)4•12(H2O) C 2/c 2/m

08.DH.25 Zodacite Ca4MnFe4(PO4)6(OH)4•12(H2O) C 2/c,Cc Mono

Other Calcioferrite Information

References:

NAME( Dana8) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Enc. of Minerals,2nd ed.,1990)

See Also:

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

Search for Calcioferrite using:

[ALTAVISTA] [AOL] [All-The-Web] [HotBot] [Ixquick] [MAMMA] [MSN.COM] [Netscape] [Scirus] [Teoma] [Wikipedia] [YAHOO]

Visit our Advertisers for Calcioferrite :

AA Mineral Specimens

B & L Fine Minerals

Crystalarium.com

Dan Weinrich Fine Minerals

Dan Weinrich Auctions

Dakota Matrix

Diamond Dan Publications

John Betts Fine Minerals

Mason's Minerals

Mineral News

Mineral of the Month Club

Wrights Rock Shop

Translate Calcioferrite Mineral Data :

Ask about Calcioferrite 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 Calcioferrite Specimen Label here :

Calcioferrite

Ca4Fe++(Fe+++,Al)4(PO4)6(OH)4•12(H2O)
Dana No: 42.11.08.03 Strunz No: 08.DH.25
Locality:

Notes: