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Viitaniemiite (Viitaniemiit)

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Roscherit xx

auf Viitaniemiit (weißlich-blaßrosa); Greifensteine bei Ehrenfriedersdorf/Erzgebirge,Sachsen; historischer Fund; Bildbreite 10,5 mm

Collection: Haubi
Copyright: Haubi
Contribution: Haubi 2019-06-11
Locality: Greifensteine (Steinbruch Kopper) / Ehrenfriedersdorf / Erzgebirgskreis / Sachsen / Deutschland

Collectors Summary

Color grauweiß
Streak color weiß
Hardness (Mohs) 5
Solubility +++ Säuren
Crystal System monoklin, P21/m

Chemism

Chemical formula

Na(Ca,Mn2+)Al(PO4)(F,OH)3

Chemical composition

Aluminium, Calcium, Mangan, Natrium, Fluor, Phosphor, Sauerstoff, Wasserstoff

Unit weight: 244.2380421375 u; Number of atoms in the formula: 11.75

Info

Empirical formula:

Na(Ca0.75Mn0.25)Al(PO4)(F0.75(OH)0.25)3

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)

Hydrogen

H

0.31

0.75

6.38

1.0079470

0.7559603

Oxygen

O

31.12

4.75

40.43

15.9994300

75.9972925

Fluorine

F

17.50

2.25

19.15

18.9984033

42.7464073

Sodium

Na

9.41

1

8.51

22.9897702

22.9897702

Aluminium

Al

11.05

1

8.51

26.9815382

26.9815382

Phosphorus

P

12.68

1

8.51

30.9737612

30.9737612

Calcium

Ca

12.31

0.75

6.38

40.0784000

30.0588000

Manganese

Mn

5.62

0.25

2.13

54.9380499

13.7345125

Analysis wt%

P2O5 : 28.30, Al2O3 : 22.40, FeO : 0.70, MnO : 10.50, CaO : 14.70, Na2O : 11.60, F : 12.30, H2O : 4.93 (Ref: GDF81)

Strunz 9th edition incl. updates

8.BL.15

8: Phosphate, Arsenate, Vanadate
B: Phosphate, etc., mit weitere Anionen, ohne H2O
L: Mit mittelgroßen und großen [Kationen] (OH, etc.):RO4 = 3:1
15:Viitaniemiit-Gruppe

Lapis Classification

VII/B.12-030

VII: PHOSPHATE, ARSENATE UND VANADATE ("Phosphate" des Registers immer einschließlich isotyper Arsenate und Vanadate!)
B: Wasserfreie Phosphate, mit fremden Anionen F,Cl,O,OH
12: Mittelgroße Kationen: Mg-Mn-Fe-Cu-Zn

Classification by Hölzel

8.BJ.340

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

Dana 8th edition

41.03.05.01

41: Anhydrous Phosphates, etc. Containing Hydroxyl or Halogen
03: Anhydrous Phosphates, etc. Containing Hydroxyl or Halogen where (A B)3 (XO4) Zq

IMA status

Anerkannt von der CNMNC

Mineral status

anerkanntes Mineral

Optical Properties

Color

grauweiß

Streak color

weiß

max. Birefringence

0.014

Birefringence chart\! Viitaniemiite title=Birefringence chart Viitaniemiite

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

1.557

RI value β

1.565

RI value γ / ε

1.571

Ri mean

1.564

2V angle

Biaxial (-) 81°

Crystallography

Crystal System

monoklin

Class (H-M)

2/m

Space Group number

11

Space Group

P21/m

Cell parameters a (Å)

5.457

Cell parameters b (Å)

7.151

Cell parameters c (Å)

6.836

Cell parameters a/b or c/a

0.763

Cell parameters c/b

0.956

Cell parameters α

90°

Cell parameters β

109.37

Cell parameters γ

90°

Z

2

Volumne (ų)

251.662

X-Ray Powder Diffraction

4.93(20),
3.246(40),
2.981(20),
2.966(20),
2.913(100),
2.611(20),
2.190(30),
1.929(20)

XRD chart Viitaniemiite

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)

3.245 (gemessen)

3.223 ( ρ calc. Mineralienatlas )

Instability

+++ Säuren

Preface

Author (Name, Year)

Lahti, 1981

References

Geological Survey of Finland, Bulletin 314 (1981), 1 (see p. 51)

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

Viitaniemiite

Na(Ca,Mn2+)Al(PO4)(F,OH)3

monoklin : 2/m : P21/m

8.BL.15

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

Brazilianite

NaAl3(PO4)2(OH)4

monoklin : 2/m : P21/n

VII/B.12-010

Augelite

Al2(PO4)(OH)3

monoklin : 2/m : C2/m

VII/B.12-020

Viitaniemiite

Na(Ca,Mn2+)Al(PO4)(F,OH)3

monoklin : 2/m : P21/m

VII/B.12-030

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

Drugmanite

Pb2(Fe3+,Al)H(PO4)2(OH)2

monoklin : 2/m : P21/a

8.BJ.300

Viitaniemiite

Na(Ca,Mn2+)Al(PO4)(F,OH)3

monoklin : 2/m : P21/m

8.BJ.340

Related minerals "Dana 8. Classification" [Mineral | Chemical formula : Crystal system : Class (H-M) | Space Group | Indenture number]

Clinoclase

Cu3(AsO4)(OH)3

monoklin : 2/m : P21/c

41.03.01.01

Gilmarite

Cu3[(OH)3|AsO4]

triklin : 1 : P1

41.03.01.02

Cornetite

Cu3(PO4)(OH)3

orthorhombisch : mmm : Pbca

41.03.02.01

Theoparacelsite

Cu3(OH)2As2O7

orthorhombisch : mmm : Pmma

41.03.02.02

Flinkite

Mn2+2Mn3+(AsO4)(OH)4

orthorhombisch : mmm : Pnma

41.03.03.01

Retzian-(Ce)

Mn2Ce(AsO4)(OH)4

orthorhombisch : mmm : Pban

41.03.04.01

Retzian-(La)

(Mn,Mg)2(La,Ce,Nd)(AsO4)(OH)4

orthorhombisch : mmm : Pban

41.03.04.03

Viitaniemiite

Na(Ca,Mn2+)Al(PO4)(F,OH)3

monoklin : 2/m : P21/m

41.03.05.01

Nacaphite

Na2Ca(PO4)F

triklin : 1 : P1

41.03.06.01

Gerdtremmelite

(Zn,Fe2+)(Al,Fe3+)2(AsO4)(OH)5

41.03.07.01

Paulkellerite

Bi2Fe3+(PO4)O2(OH)2

monoklin : 2/m : C2/c

41.03.08.01

Brendelite

(Bi3+,Pb2+)2(Fe3+,Fe2+)[O2|OH|PO4]

monoklin : 2/m : C2/m

41.03.08.02

Other languages

German

Viitaniemiit

English

Viitaniemiite

French

Viitaniemiite

Spanish

Viitaniemiíta

Russian

Виитаньемиит

Traditional Chinese

氟磷鋁鈣鈉石

Simplified Chinese

氟磷铝钙钠石

IMA Number

IMA 1977-043

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

German pages

DeWikiPedia - search for: Viitaniemiit
Google-Bilder-Suche - search for: Viitaniemiit
Mineralogisch-Petrographisches-Institut Hamburg - search for: Viitaniemiit

English pages

Mindat - search for: Viitaniemiite
Webmineral - search for:Viitaniemiite
Handbook-of-Mineralogy - search for: Viitaniemiite
RRUFF - Raman, XRD and other mineral data - search for: Viitaniemiite
RRUFF - References and PDF downloads - search for: Viitaniemiite
American-Mineralogist-Crystal-Structure-Database - search for: Viitaniemiite
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Russian pages

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Mineral Dealer

German pages

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Locations with GPS information




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