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Varulite (Varulith)

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Varulit
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Varulit
massiges Aggregat von Varulit, Kaatiala Pegmatit, Vaasa, Südösterbotten, Finnland; BB ~ 5 cm
Copyright: Joy Desor; Contribution: openpit
Location: Finnland/Südösterbotten (Etelä-Pohjanmaa), Landschaft/Kuortane/Kaatiala Pegmatit
Mineral: Varulite
Image: 1582454923
License: Usage for Mineralienatlas project only
Varulit

massiges Aggregat von Varulit, Kaatiala Pegmatit, Vaasa, Südösterbotten, Finnland; BB 5 cm

Copyright: Joy Desor
Contribution: openpit 2020-02-23
Locality: Kaatiala Pegmatit / Kuortane / Südösterbotten (Etelä-Pohjanmaa), Landschaft / Finnland

You find additional specimen at the Geolitho Museum

Collectors Summary

Color gelblichgrün, dunkelolivgrün
Streak color grünlich
Lustre Speckglanz
Hardness (Mohs) 5
Solubility + Säuren
Crystal System monoklin,

Chemism

Chemical formula

(Na,Ca)Mn2+(Mn2+,Fe2+,Fe3+)2(PO4)3

Chemical composition

Calcium, Eisen, Mangan, Natrium, Phosphor, Sauerstoff

Unit weight: 477.71624103 u; Number of atoms in the formula: 19

Info

Empirical formula:

(Na0.75Ca0.25)Mn(Mn0.6Fe0.3Fe0.1)2(PO4)3

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)

Oxygen

O

40.19

12

63.16

15.9994300

191.9931600

Sodium

Na

3.61

0.75

3.95

22.9897702

17.2423277

Phosphorus

P

19.45

3

15.79

30.9737612

92.9212836

Calcium

Ca

2.10

0.25

1.32

40.0784000

10.0196000

Manganese

Mn

25.30

2.2

11.58

54.9380499

120.8637098

Iron

Fe

9.35

0.8

4.21

55.8452000

44.6761600

Analysis wt%

Li2O : 0.88, Na2O : 7.12, CaO : 4.86, FeO : 7.52, MnO : 25.30, Fe2O3 : 8.35, P2O5 : 42.80, H2O : 0.89 (Ref: Dana, 7th ed. 2)

Strunz 9th edition incl. updates

8.AC.10

8: Phosphate, Arsenate, Vanadate
A: Phosphate, etc., ohne weitere Anionen, ohne H2O
C: Mit mittelgroßen und großen [Kationen]
10:Alluaudit-Gruppe

Lapis Classification

VII/A.06-100

VII: PHOSPHATE, ARSENATE UND VANADATE ("Phosphate" des Registers immer einschließlich isotyper Arsenate und Vanadate!)
A: Wasserfreie Phosphate [PO4] 3-, ohne fremde Anionen
6: Mittelgroße und große Kationen: Mg-Mn-Fe-Cu-Zn und Ca-Na; Alluaudit-Gruppe

Classification by Hölzel

8.AC.640

8: PHOSPHATES ARSENATES VANADATES
A: Phosphates (-anions -water)
C: Phosphates, C medium + large
6: Hagendorfite-Group

Hey's Chemical Index of Minerals

19.12.50

19: Phosphates
12: Phosphates of Mn

Dana 8th edition

38.02.03.03

38: Anhydrous Phosphates, etc
02: Anhydrous Phosphates, etc (A+ B++)5 (XO4)3
03: Alluaudite-Wyllieite Group (Alluaudite Subgroup)

IMA status

anerkannt, bereits vor IMA1959 bekannt, vererbt

Mineral status

anerkanntes Mineral

IMA Classification

IMA Classification

Alluaudite supergroup  ⇒ Alluaudite group

Optical Properties

Color

gelblichgrün, dunkelolivgrün

Streak color

grünlich

Lustre

Speckglanz

max. Birefringence

0.012

Birefringence chart\! Varulite title=Birefringence chart Varulite

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

1.720

RI value β

1.723

RI value γ / ε

1.732

Ri mean

1.725

2V angle

Biaxial (+) 70°

Crystallography

Crystal System

monoklin

Cell parameters a (Å)

11.91

Cell parameters b (Å)

12.54

Cell parameters c (Å)

6.46

Cell parameters a/b or c/a

0.950

Cell parameters c/b

0.515

Cell parameters α

90°

Cell parameters β

114.98

Cell parameters γ

90°

Z

4

Volume (ų)

874.557

X-Ray Powder Diffraction

6.35(30),
5.46(30),
3.498(40),
3.12(30),
2.909(30),
2.792(20),
2.737(100),
2.556(40)

XRD chart Varulite

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

Physical Properties

Hardness (Mohs)

5

VHN (Hardness Vickers)

390 (ungefähre Angabe abgeleitet aus der Mohshärte)

Density (g/cm³)

3.581 (gemessen)

3.628 ( ρ calc. Mineralienatlas )

Instability

+ Säuren

(Co-)Type locality

(Co-)Type locality

Schweden/Västerbotten, Provinz/Skelleftea/Varuträsk

Type material

Geowissenschaftliche Sammlungen des GZG, Göttingen

Collection number of type material

GZG.MIN.7.1.43.1 / UG023-025-Typusschränke Minerale

Paragenesis of type material

Triphylin

Preface

Author (Name, Year)

Quensel, 1937

References

Mineralogical Magazine (1979): 43: 227-235.

Geologiska Föeningens I Stockholm Förhandlinger (1937): 59: 95.

IMA group assignments



 
 
 
(Na,Ca)2(Mn,Mg,Fe2+)(Fe3+,Mn2+)2(PO4)3
monoklin
C2/c

 
 
 
NaCaMn2+(Mn2+,Mg)2(AsO4)3
monoklin
I2/a

 
 
 
Na2Mg2Fe3+(AsO4)3
monoklin
C2/c

 
 
 
NaCu4[AsO4]3
monoklin
C2/c

 
 
 
NaCaMg3(AsO4)3
monoklin
C2/c

 
 
 
NaCaMg2[AsO4][AsO3(OH)]2
monoklin
C2/c

 
 
 
NaMn3[AsO4]2[AsO2(OH)2]
monoklin
C2/c

 
 
 
Na(Ca,Pb)(Ca,Mn)(Mn,Mg)2(AsO4)3
monoklin
I2/a

 
 
 
NaCaFe2+(Fe2+,Mn2+,Fe3+)2(PO4)3
monoklin
I2/a

 
 
 
(Na,Ca)2Fe2+(Fe2+,Fe3+)2(PO4)3
monoklin
I2/a

 
 
 
NaCaMn2(PO4)[PO3(OH)]2
monoklin
C2/c

 
 
 
NaCaMn2+(Fe2+,Fe3+,Mg)2(PO4)3
monoklin
C2/c

 
 
 
Na2(Ca,Na)(Fe3+,Cu)2(AsO4)3
monoklin
C2/c

 
 
 
NaCuMg3(AsO4)3
monoklin
I2/a

 
 
 
Na3Fe3+2(AsO4)3
monoklin
C2/c

 
 
 
NaMn2+Mg(Fe2+,Fe3+)2(PO4)3
monoklin
C2/c

 
 
 
NaMnMg2[AsO4]2[AsO2(OH)2]
monoklin
C2/c

 
 
 
(Na,Ca)2Ca(Mg,Fe3+)2(AsO4)3
monoklin
C2/c

 
 
 
Na16Mn2+25Al8(PO4)30
monoklin
Pc

 
 
 
Na0.8Ca0.4(Mg,Fe3+,Al)3Cu0.4[AsO4]3
monoklin
C2/c

 
 
 
Na(Zn,Mg)3H2(AsO4)3
monoklin
C2/c

 
 
 
NaCa2Mg2(AsO4)3
monoklin
C2/c

 
 
 
(Na,Ca)Mn2+(Mn2+,Fe2+,Fe3+)2(PO4)3
monoklin
 

 
 
 
NaFe3+2(Mg,Mn)(AsO4)3·H2O
monoklin
C2/c

 
 
 
Na3Mn2+4Mg2Al(PO4)6
monoklin
P21/n

 
 
 
NaZn2Cu2(AsO4)3
monoklin
C2/c

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Actuality: 28. Mar 2024 - 23:23:53

Other languages

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Varulita

English

Varulite

French

Varulite

German

Varulith

Alternative Name

German

Varulit

CNMNC symbol

Symbol

Vr

Locations with GPS information

IDs

GUSID (Global unique identifier short form) xOKRDGLpfk6scEiYzZ4mBg
GUID (Global unique identifier) 0C91E2C4-E962-4E7E-AC70-4898CD9E2606
Database ID 4033