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Natrophilite (Natrophilit)

Collectors Summary

Color weingelb
Streak color weiß
Hardness (Mohs) 4.50 - 5.00
Solubility +++ Säuren
Crystal System orthorhombisch, Pnam

Chemism

Chemical formula

NaMnPO4

Chemical composition

Mangan, Natrium, Phosphor, Sauerstoff

Unit weight: 172.8993013 u; Number of atoms in the formula: 7

Info

Empirical formula:

NaMnPO4

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)

Oxygen

O

37.01

4

57.14

15.9994300

63.9977200

Sodium

Na

13.30

1

14.29

22.9897702

22.9897702

Phosphorus

P

17.91

1

14.29

30.9737612

30.9737612

Manganese

Mn

31.77

1

14.29

54.9380499

54.9380499

Analysis wt%

Na2O : 16.79, FeO : 3.06, MnO : 38.19, P2O5 : 41.03, H2O : 0.43 (Ref: Dana, 7th ed. 2)

Strunz 9th edition incl. updates

8.AB.10

8: Phosphate, Arsenate, Vanadate
A: Phosphate, etc., ohne weitere Anionen, ohne H2O
B: Mit mittelgroßen [Kationen]
10:Triphylin-Gruppe

Lapis Classification

VII/A.02-080

VII: PHOSPHATE, ARSENATE UND VANADATE ("Phosphate" des Registers immer einschließlich isotyper Arsenate und Vanadate!)
A: Wasserfreie Phosphate [PO4] 3-, ohne fremde Anionen
2: Mittelgroße Kationen: Fe-Mn vorwiegend

Classification by Hölzel

8.AC.520

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

Dana 8th edition

38.01.01.03

38: Anhydrous Phosphates, etc
01: Anhydrous Phosphates, etc A+ B++ XO4
01: Triphylite Group

IMA status

Erstbeschreibung vor CNMNC-Gründung (1959), als Mineral meist anerkannt

Mineral status

anerkanntes Mineral

IMA Classification

IMA Classification

Triphylite group

Optical Properties

Color

weingelb

Streak color

weiß

max. Birefringence

0.013

Birefringence chart\! Natrophilite title=Birefringence chart Natrophilite

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

1.671

RI value β

1.674

RI value γ / ε

1.684

Ri mean

1.676

2V angle

Biaxial (+) 75°~

Crystallography

Crystal System

orthorhombisch

Class (H-M)

mmm

Space Group number

62

Space Group

Pnam

Cell parameters a (Å)

10.523

Cell parameters b (Å)

4.987

Cell parameters c (Å)

6.312

Cell parameters a/b or c/a

2.110

Cell parameters c/b

1.266

Cell parameters α

90°

Cell parameters β

90°

Cell parameters γ

90°

Z

4

Volumne (ų)

331.242

X-Ray Powder Diffraction

4.498(60),
4.045(60),
3.656(50),
3.154(50),
2.863(80),
2.604(100),
2.583(100),
1.831(70)

XRD chart Natrophilite

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)

4.50 - 5.00

VHN (Hardness Vickers)

340 (ungefähre Angabe abgeleitet aus der Mohshärte)

Density (g/cm³)

3.41 (gemessen)

3.467 ( ρ calc. Mineralienatlas )

Instability

+++ Säuren

Preface

Author (Name, Year)

Brush & Dana, 1890

References

Handbook of Mineralogy (Anthony et al.), 4 (2000), 405

IMA group assignments


 
 
Fe3+PO4
orthorhombisch
Pmnb

 
 
NaFe2+(PO4)
orthorhombisch
Pbnm

 
 
LiMnPO4
orthorhombisch
Pmnb

 
 
NaMnPO4
orthorhombisch
Pnam

 
 
Mn3+(PO4)
orthorhombisch
Pmnb

 
 
LiMg(PO4)
orthorhombisch
Pbn21, Pbnm

 
 
LiFe2+PO4
orthorhombisch
Pbnm

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Actuality: 21. Mar 2023 - 23:25:45

Other languages

Spanish

Natrofilita

German

Natrophilit

English

Natrophilite

French

Natrophilite

Russian

Натрофилит

Alternative Name

Spanish

Natrophilita

CNMNC symbol

Symbol

Ntp

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