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Varulite (Varulit)

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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

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

Volumne (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

 
Alluaudite supergroup
 
 
 

 
 
Alluaudite group
 
 
 

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

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

 
 
 
Badalovite
Na2Mg2Fe3+(AsO4)3
monoklin
C2/c

 
 
 
Bradaczekite
NaCu4[AsO4]3
monoklin
C2/c

 
 
 
Calciojohillerite
NaCaMg3(AsO4)3
monoklin
C2/c

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

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

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

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

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

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

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

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

 
 
 
Johillerite
NaCuMg3(AsO4)3
monoklin
I2/a

 
 
 
Khrenovite
Na3Fe3+2(AsO4)3
monoklin
C2/c

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

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

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

 
 
 
Manitobaite
Na16Mn2+25Al8(PO4)30
monoklin
Pc

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

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

 
 
 
Paraberzeliite
NaCa2Mg2(AsO4)3
monoklin
C2/c

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

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

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

 
 
 
Zincobradaczekite
NaZn2Cu2(AsO4)3
monoklin
C2/c

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Actuality: 27. Mar 2023 - 21:48:32

Other languages

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Varulita

English

Varulite

French

Varulite

German

Varulith

Alternative Name

German

Varulit

CNMNC symbol

Symbol

Vr

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