Cyrilovite Mineral Data (original) (raw)

General Cyrilovite Information

Help on Chemical Formula: Chemical Formula:

NaFe+++3(PO4)2(OH)4•2(H2O)

Help on Composition: Composition:

Molecular Weight = 484.53 gm

Sodium 4.74 % Na 6.40 % Na2O

Iron 34.58 % Fe 49.44 % Fe2O3

Phosphorus 12.78 % P 29.30 % P2O5

Hydrogen 1.66 % H 14.87 % H2O

Oxygen 46.23 % O

______ ______

100.00 % 100.00 % = TOTAL OXIDE

Help on Empirical Formula: Empirical Formula:

NaFe3+3(PO4)2(OH)4•2(H2O)

Help on IMA Status: IMA Status:

Valid Species (Pre-IMA) 1953

Help on Locality: Locality:

Link to MinDat.org Location Data.

Help on Name Origin: Name Origin:

Named after its locality Cyrilov, Czechoslovakia.

Help on Synonym: Synonym:

ICSD 90612

PDF 43-672

Cyrilovite Image

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Cyrilovite Crystallography

Help on Axial Ratios: Axial Ratios:

a:c = 1:2.64085

Help on Cell Dimensions: Cell Dimensions:

a = 7.334, c = 19.368, Z = 4; V = 1,041.76 Den(Calc)= 3.09

Help on Crystal System: Crystal System:

Tetragonal - TrapezohedralH-M Symbol (4 2 2) Space Group: P 412121,P 432121

Help on X Ray Diffraction: X Ray Diffraction:

By Intensity(I/Io): 4.85(1), 2.658(0.8), 3.186(0.8),

Click Here for Large Cyrilovite Structure Window Crystal Structure:

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| | Cozzupoli D , Grubessi O , Mottana A , Zanazzi P F , Mineralogy and Petrology , 37 (1987) p.1-14, Cyrilovite from Italy: structure and crystal chemistry, Locality: Bosa, Sardinia, Italy | | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |

Physical Properties of Cyrilovite

Help on Cleavage: Cleavage:

None

Help on Color: Color:

Yellow, Orange yellow, Brown.

Help on Density: Density:

3.08

Help on Fracture: Fracture:

Uneven - Flat surfaces (not cleavage) fractured in an uneven pattern.

Help on Habit: Habit:

Massive - Granular - Common texture observed in granite and other igneous rock.

Help on Habit: Habit:

Pseudo Cubic - Crystals show a cubic outline.

Help on Hardness: Hardness:

4 - Fluorite

Help on Luster: Luster:

Vitreous (Glassy)

Help on Streak: Streak:

yellow

Optical Properties of Cyrilovite

Help on Gladstone-Dale: Gladstone-Dale:

CI meas= 0.062 (Fair) - where the CI = (1-KPDmeas/KC)
CI calc= 0.065 (Fair) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2544,KPDmeas= 0.2552,KC= 0.2721
Ncalc = 1.84

Help on Optical Data: Optical Data:

Uniaxial (-), e=1.769, w=1.803, bire=0.0340.

Calculated Properties of Cyrilovite

Help on Electron Density: Electron Density:

Bulk Density (Electron Density)=3.04 gm/cc
note: Specific Gravity of Cyrilovite =3.08 gm/cc.

Help on Fermion Index: Fermion Index:

Fermion Index = 0.007554886
Boson Index = 0.992445114

Help on Photoelectric: Photoelectric:

PECyrilovite = 10.94 barns/electron
U=PECyrilovite x rElectron Density= 33.24 barns/cc.

Help on Radioactivity: Radioactivity:

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

Cyrilovite Classification

Help on Dana Class: Dana Class:

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

(42.07)where (AB)5 (XO4)3 Zq � x(H2O)

(42.07.08)Cyrilovite Group

42.07.08.01 Cyrilovite NaFe3(PO4)2(OH)4•2(H2O) P 412121,P 432121 4 2 2

42.07.08.02 Wardite NaAl3(PO4)2(OH)4•2(H2O) P 41212 4 2 2

Help on Strunz Class: Strunz Class:

08.DL.10 08 - PHOSPHATES, ARSENATES, VANADATES

08.D - Phosphates, etc

08.DL -With large and medium-sized cations, (OH, etc.):RO4 = 2:1

08.DL.10 Cyrilovite NaFe3(PO4)2(OH)4•2(H2O) P 412121,P 432121 4 2 2

08.DL.10 Millisite (Na,K)CaAl6(PO4)4(OH)9•3(H2O) P 41212,P 43212 4 2 2

08.DL.10 Wardite NaAl3(PO4)2(OH)4•2(H2O) P 41212 4 2 2

Other Cyrilovite Information

Help on References: References:

NAME( Duda&Rejl90) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Enc. of Minerals,2nd ed.,1990)

Help on See Also: See Also:

Links to other databases for Cyrilovite :
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

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

Cyrilovite

NaFe+++3(PO4)2(OH)4•2(H2O)
Dana No: 42.07.08.01 Strunz No: 08.DL.10
Locality:

Notes: