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Arrojadite-(KNa) (Арроядит-(KNa))

Collectors Summary

Hardness (Mohs) 5
Solubility +++ verdünnte Säuren

Chemism

Chem­ical formula

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

Chem­ical com­po­si­tion

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

Unit weight: 2121.7751746 u; Number of atoms in the formula: 86

Info

Empirical formula:

KNa3(CaNa2)(Fe)13Al(PO4)11(PO3OH)(OH)2

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)

Hydrogen

H

0.14

3

3.49

1.0079470

3.0238410

Oxygen

O

37.70

50

58.14

15.9994300

799.9715000

Sodium

Na

5.42

5

5.81

22.9897702

114.9488510

Aluminium

Al

1.27

1

1.16

26.9815382

26.9815382

Phosphorus

P

17.52

12

13.95

30.9737612

371.6851344

Potassium

K

1.84

1

1.16

39.0983100

39.0983100

Calcium

Ca

1.89

1

1.16

40.0784000

40.0784000

Iron

Fe

34.22

13

15.12

55.8452000

725.9876000

Anal­y­sis wt%

P2O5 : 40.00, Al2O3 : 2.66, FeO : 28.22, MnO : 15.78, MgO : 1.04, CaO : 2.46, Na2O : 6.40, K2O : 1.74, H2O : 0.91, F : 0.80 (Ref: American Mineralogist 1950)

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.20-010

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.104

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

max. Birefrin­gence

0.011

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

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

1.664

RI value β

1.670

RI value γ / ε

1.675

Ri mean

1.670

2V angle

Biaxial (-) 86°

Crystallography

Cell param­e­ters a (Å)

24.730

Cell param­e­ters b (Å)

10.057

Cell param­e­ters c (Å)

16.526

Cell param­e­ters a/b or c/a

2.459

Cell param­e­ters c/b

1.643

Cell param­e­ters α

90°

Cell param­e­ters β

105.78

Cell param­e­ters γ

90°

Z

4

Volumne (ų)

3955.3

X-Ray Pow­der Diffrac­tion

5.86(29), 5.03(28), 3.009(34), 3.050(100), 2.798(25), 2.793(28), 2.777(24), 2.698(71)

XRD chart Arrojadite-(KNa)

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

Crystals 3D

Open larger view

Crystal Structure 3D

Open larger view

Physical Properties

Hard­ness (Mohs)

5

VHN (Hard­ness Vick­ers)

390 (ungefähre Angabe abgeleitet aus der Mohshärte)

Density (g/cm³)

3.553 (gemessen)

3.563 ( ρ calc. Mineralienatlas )

Insta­bil­ity

+++ verdünnte Säuren

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-(KNa)

English

Arrojadite-(KNa)

Russian

Арроядит-(KNa)

IMA Number

IMA 2005-047

Automatic Links to external internet sources (Responsibility is with the operator)

German pages

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English pages

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Russian pages

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Locations with GPS information




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