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Fluorarrojadite-(BaFe)

Collectors Summary

Color dunkel gelb-grün
Streak color gelb-grün
Hardness (Mohs) 4 - 5
Crystal System monoklin, Bb

Chemism

Chemical formula

BaFe2+Na2Ca(Fe2+,Mn,Mg)13Al(PO4)11(PO3OH)(F,OH)2

Additional chem. information

Arrojadit-Gruppe

Chemical composition

Aluminium, Barium, Calcium, Eisen, Magnesium, Mangan, Natrium, Fluor, Phosphor, Sauerstoff, Wasserstoff

Unit weight: 2165.326925985 u; Number of atoms in the formula: 82.5

Info

Empirical formula:

BaFeNa2Ca(Fe0.6Mn0.3Mg0.1)13Al(PO4)11(PO3OH)(F0.75(OH)0.25)2

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)

Hydrogen

H

0.07

1.5

1.82

1.0079470

1.5119205

Oxygen

O

35.84

48.5

58.79

15.9994300

775.9723550

Fluorine

F

1.32

1.5

1.82

18.9984033

28.4976049

Sodium

Na

2.12

2

2.42

22.9897702

45.9795404

Magnesium

Mg

1.46

1.3

1.58

24.3050600

31.5965780

Aluminium

Al

1.25

1

1.21

26.9815382

26.9815382

Phosphorus

P

17.17

12

14.55

30.9737612

371.6851344

Calcium

Ca

1.85

1

1.21

40.0784000

40.0784000

Manganese

Mn

9.89

3.9

4.73

54.9380499

214.2583946

Iron

Fe

22.70

8.8

10.67

55.8452000

491.4377600

Barium

Ba

6.34

1

1.21

137.3277000

137.3277000

Analysis wt%

P2O5 : 38.87, Al2O3 : 2.35, FeO : 27.16, MnO : 12.91, MgO : 1.52, CaO : 2.25, SrO : 0.81, BaO : 4.39, PbO : 0.69, Li2O : 0.33, Na2O : 4.99, K2O : 0.59, F : 0.89, H2O : 0.81 (Ref: American Mineralogist 2006)

Strunz 9th edition incl. updates

8.BF.05

8: Phosphate, Arsenate, Vanadate
B: Phosphate, etc., mit weitere Anionen, ohne H2O
F: Mit mittelgroßen und großen [Kationen] (OH, etc.):RO4 < 0.5:1
05:Arrojadit-Gruppe

Lapis Classification

VII/B.20-045

VII: PHOSPHATE, ARSENATE UND VANADATE ("Phosphate" des Registers immer einschließlich isotyper Arsenate und Vanadate!)
B: Wasserfreie Phosphate, mit fremden Anionen F,Cl,O,OH
20: Mittelgroße und große Kationen: Mg-Cu-Zn und Ca-Na-K-Ba-Pb

Classification by Hölzel

8.BJ.165

8: PHOSPHATES ARSENATES VANADATES
B: Phosphates (+Anions -Water)
J: Phosphates, very large: 1+2, Vmed: 2,3
1: Arrojadite-Group

IMA status

anerkannt 2005

Mineral status

anerkanntes Mineral

IMA Classification

IMA Classification

Arrojadite group

Optical Properties

Color

dunkel gelb-grün

Streak color

gelb-grün

Diaphaneity (Transparency)

transparent

Crystallography

Crystal System

monoklin

Class (H-M)

m

Space Group number

9

Space Group

Bb

Cell parameters a (Å)

16.4970

Cell parameters b (Å)

10.0176

Cell parameters c (Å)

24.6359

Cell parameters a/b or c/a

1.647

Cell parameters c/b

2.459

Cell parameters α

90°

Cell parameters β

105.649

Cell parameters γ

90°

Volume (ų)

3920.422

X-Ray Powder Diffraction

3.400(31), 3.211(47), 3.032(100), 2.841(34), 2.759(33), 2.706(39), 2.703(68), 2.543(38)

XRD chart Fluorarrojadite-(BaFe)

Calculated from d-spacing and intensity at 0.1541838 nm (Cu)

Physical Properties

Hardness (Mohs)

4 - 5

IMA group assignments

Other languages

German

Fluorarrojadit-(BaFe)

English

Fluorarrojadite-(BaFe)

Russian

Фторарроядит-(BaFe)

CNMNC (IMA)-Number

IMA 2005-058a

CNMNC symbol

Symbol

Fajd-BaFe

Locations with GPS information

IDs

GUSID (Global unique identifier short form) TqGJAsb900G6ON37i80I-Q
GUID (Global unique identifier) 0289A14E-FDC6-41D3-BA38-DDFB8BCD08F9
Database ID 4441