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Arrojadite-(SrFe) (Арроядит-(SrFe))

Collectors Summary

Color gelb
Lustre Glasglanz
Crystal System monoklin,

Chemism

Chem­ical formula

SrFe2+(CaNa2)Fe2+13Al(PO4)11(PO3OH)(OH)2

Addi­tional chem. informa­tion

Arrojadit Gruppe

Chem­ical com­po­si­tion

Aluminium, Calcium, Eisen, Natrium, Strontium, Phosphor, Sauerstoff, Wasserstoff

Unit weight: 2157.173754 u; Number of atoms in the formula: 84

Info

Empirical formula:

SrFe(CaNa2)Fe13Al(PO4)11(PO3OH)(OH)2

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)

Hydrogen

H

0.14

3

3.57

1.0079470

3.0238410

Oxygen

O

37.08

50

59.52

15.9994300

799.9715000

Sodium

Na

2.13

2

2.38

22.9897702

45.9795404

Aluminium

Al

1.25

1

1.19

26.9815382

26.9815382

Phosphorus

P

17.23

12

14.29

30.9737612

371.6851344

Calcium

Ca

1.86

1

1.19

40.0784000

40.0784000

Iron

Fe

36.24

14

16.67

55.8452000

781.8328000

Strontium

Sr

4.06

1

1.19

87.6210000

87.6210000

Anal­y­sis wt%

P2O5 : 41.00, Al2O3 : 2.46, FeO : 22.94, MnO : 11.34, MgO : 7.00, CaO : 1.58, SrO : 4.63, BaO : 1.48, Na2O : 4.77, F : 0.82, H2O : 0.92 (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.20-050

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.162

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

IMA sta­tus

2005 anerkannt

Min­eral sta­tus

anerkanntes Mineral

IMA Classification

IMA Clas­sifica­tion

Arrojadite group

Optical Properties

Color

gelb

Diaphane­ity (Trans­parency)

transparent

Lus­tre

Glasglanz

max. Birefrin­gence

0.014

Birefringence chart\! Arrojadite-(SrFe) title=Birefringence chart Arrojadite-(SrFe)

Michel-Levy Color Chart viewed according to the maximum birefringence (at 30μm). Mineral color is not taken into account. Click on the image to enlarge or change thickness.

RI value α / ω / n

1.654

RI value β

1.657

RI value γ / ε

1.668

Ri mean

1.660

2V angle

Biaxial (+) 41° (gemessen) 55° (berechnet)

Absorp­tion

Z > X = Y

Pleochro­ism

Sehr schwach, farblos bis leicht gelblich

Crystallography

Crystal Sys­tem

monoklin

Cell param­e­ters a (Å)

16.3992

Cell param­e­ters b (Å)

9.9400

Cell param­e­ters c (Å)

24.4434

Cell param­e­ters a/b or c/a

1.65

Cell param­e­ters c/b

2.459

Cell param­e­ters α

90°

Cell param­e­ters β

105.489°

Cell param­e­ters γ

90°

Z

4

Volumne (ų)

3839.762

X-Ray Pow­der Diffrac­tion

3.3784(26), 3.1925(41), 3.0093(100), 2.8202(24), 2.8050(28), 2.7383(28), 2.6854(70), 2.5291(23)

XRD chart Arrojadite-(SrFe)

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

Crystal Structure 3D

Open larger view

Physical Properties

Density (g/cm³)

3.569 (berechnet)

3.731 ( ρ calc. Mineralienatlas )

(Co-)Type locality

(Co-)Type locality

Schweden/Värmland, Provinz/Hålsjöberget (Horrsjöberg)

References

American Mineralogist 84 (1999), 193

IMA group assignments

Related minerals "Strunz Classification" (9. Edition) [Mineral | Chemical formula | Crystal system : Class (H-M) : Space Group | Indenture number]

Arrojadite-(BaFe)

(Ba,K,Pb)Na3(Ca,Sr)(Fe,Mg,Mn)14Al(OH)2(PO4)12

8.BF.05

Arrojadite-(BaNa)

BaNa3(NaCa)Fe2+13Al(PO4)11(PO3OH)(OH)

monoklin : 2/m : C2/c

8.BF.05

Arrojadite-(KFe)

(KNa)Fe2+(CaNa2)Fe2+13Al(PO4)11(PO3OH)(OH)2

monoklin : 2/m : A2/a

8.BF.05

Arrojadite-(KNa)

KNa3(CaNa2)(Fe2+)13Al(PO4)11(PO3OH)(OH)2

8.BF.05

Arrojadite-(PbFe)

PbFe2+(CaNa2)Fe2+13Al(PO4)11(PO3OH)(OH)2

monoklin : m : Cc

8.BF.05

Arrojadite-(SrFe)

SrFe2+(CaNa2)Fe2+13Al(PO4)11(PO3OH)(OH)2

8.BF.05

'Dickinsonite-(BaMn)'

MaMn3(CaNa3)AlMn13(PO4)12(OH)2

8.BF.05

Dickinsonite-(KMnNa)

K(NaMn)CaNa3AlMn13(PO4)12(OH)2

monoklin : 2/m : A2/a

8.BF.05

Fluorarrojadite-(BaFe)

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

monoklin : m : Bb

8.BF.05

Fluorarrojadite-(BaNa)

BaNa4CaFe13Al(PO4)11(PO3OH)F2

monoklin : m : Cc

8.BF.05

Fluorcarmoite-(BaNa)

Ba☐Na2Na2☐CaMg13Al(PO4)11(PO3OH)F2

monoklin : m : Cc

8.BF.05

Related minerals "Lapis Classification" [Mineral | Chemical formula | Crystal system : Class (H-M) : Space Group | Indenture number]

Arrojadite-(KNa)

KNa3(CaNa2)(Fe2+)13Al(PO4)11(PO3OH)(OH)2

VII/B.20-010

Arrojadite-(KFe)

(KNa)Fe2+(CaNa2)Fe2+13Al(PO4)11(PO3OH)(OH)2

monoklin : 2/m : A2/a

VII/B.20-020

Fluorarrojadite-(BaNa)

BaNa4CaFe13Al(PO4)11(PO3OH)F2

monoklin : m : Cc

VII/B.20-029

Arrojadite-(BaFe)

(Ba,K,Pb)Na3(Ca,Sr)(Fe,Mg,Mn)14Al(OH)2(PO4)12

VII/B.20-040

Fluorarrojadite-(BaFe)

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

monoklin : m : Bb

VII/B.20-045

Arrojadite-(SrFe)

SrFe2+(CaNa2)Fe2+13Al(PO4)11(PO3OH)(OH)2

VII/B.20-050

Arrojadite-(PbFe)

PbFe2+(CaNa2)Fe2+13Al(PO4)11(PO3OH)(OH)2

monoklin : m : Cc

VII/B.20-060

Dickinsonite-(KMnNa)

K(NaMn)CaNa3AlMn13(PO4)12(OH)2

monoklin : 2/m : A2/a

VII/B.20-070

Samuelsonite

(Ca,Ba)Ca8(Fe2+,Mn)4Al2(PO4)10(OH)2

monoklin : 2/m : C2/m

VII/B.20-100

Nabiasite

BaMn2+9[(OH)2|(VO4,AsO4)6]

kubisch : m3 : Pa3

VII/B.20-110

Related minerals "Hoelzel Classification" [Mineral | Chemical formula : Crystal system : Class (H-M) | Space Group | Indenture number]

Arrojadite-(KNa)

KNa3(CaNa2)(Fe2+)13Al(PO4)11(PO3OH)(OH)2

8.BJ.104

Fluorarrojadite-(BaNa)

BaNa4CaFe13Al(PO4)11(PO3OH)F2

monoklin : m : Cc

8.BJ.125

Arrojadite-(KFe)

(KNa)Fe2+(CaNa2)Fe2+13Al(PO4)11(PO3OH)(OH)2

monoklin : 2/m : A2/a

8.BJ.142

Arrojadite-(SrFe)

SrFe2+(CaNa2)Fe2+13Al(PO4)11(PO3OH)(OH)2

8.BJ.162

Arrojadite-(BaFe)

(Ba,K,Pb)Na3(Ca,Sr)(Fe,Mg,Mn)14Al(OH)2(PO4)12

8.BJ.164

Fluorarrojadite-(BaFe)

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

monoklin : m : Bb

8.BJ.165

Arrojadite-(PbFe)

PbFe2+(CaNa2)Fe2+13Al(PO4)11(PO3OH)(OH)2

monoklin : m : Cc

8.BJ.166

Other languages

German

Arrojadit-(SrFe)

English

Arrojadite-(SrFe)

Russian

Арроядит-(SrFe)

IMA Number

IMA 2005-032

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Locations with GPS information




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