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Jahnsite-(MnMnMg) (Jahnsit-(MnMnMg))

Collectors Summary

Crystal System monoklin, P2/a

Chemism

Chemical formula

Mn2+Mn2+Mg2Fe3+2(PO4)4(OH)2·8H2O

Chemical composition

Eisen, Magnesium, Mangan, Phosphor, Sauerstoff, Wasserstoff

Unit weight: 828.1998906 u; Number of atoms in the formula: 54

Info

Empirical formula:

MnMnMg2Fe2(PO4)4(OH)2·8H2O

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)

Hydrogen

H

2.19

18

33.33

1.0079470

18.1430460

Oxygen

O

50.23

26

48.15

15.9994300

415.9851800

Magnesium

Mg

5.87

2

3.70

24.3050600

48.6101200

Phosphorus

P

14.96

4

7.41

30.9737612

123.8950448

Manganese

Mn

13.27

2

3.70

54.9380499

109.8760998

Iron

Fe

13.49

2

3.70

55.8452000

111.6904000

IMA status

anerkannt CNMNC Newsletter April 2018

Mineral status

anerkanntes Mineral

IMA Classification

IMA Classification

Jahnsite group  ⇒ Jahnsite subgroup

Crystallography

Crystal System

monoklin

Class (H-M)

2/m

Space Group number

13

Space Group

P2/a

Cell parameters a (Å)

15.177(2)

Cell parameters b (Å)

7.176(1)

Cell parameters c (Å)

10.006(3)

Cell parameters a/b or c/a

2.115

Cell parameters c/b

1.394

Cell parameters α

90°

Cell parameters β

111.01(2)°

Cell parameters γ

90°

Volumne (ų)

1017.306

Kristall structure

Jahnsit-Gruppe, Struktur bestimmt

X-Ray Powder Diffraction

9.28(100),
4.945(39),
4.627(20),
3.521(43),
2.988(52),
2.842(81),
1.958(27),
1.581(27)

XRD chart Jahnsite-(MnMnMg)

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

(Co-)Type locality

(Co-)Type locality

Brasilien/Südosten (Região Sudeste)/Minas Gerais/Doce-Tal/Galiléia/Sapucaia do Norte/Proberylo

Type material

Typisches Material ist in den mineralogischen Sammlungen des Laboratoire de Minéralogie, Universität Lüttich, Bât. B18, Sart Tilman, B-4000 Lüttich, Belgien, Katalognummer 21140 gelagert.

Preface

Name from

Richard Henry Jahns

Der Wurzelname Jahnsit ehrt Richard Henry Jahns (10. März 1915 Los Angeles, Kalifornien, USA - 31. Dezember 1983 Palo Alto, Kalifornien, USA), Mineraloge und Pegmatitexperte, Stanford University, Palo Alto, Kalifornien, USA. Das Suffix kennzeichnet die Belegung von Metallatomen.

Author (Name, Year)

Pietro Vignola, Frédéric Hatert, Maxime Baijot, Nicola Rotiroti, Andrea Risplendente und Sergio Varvello (2018)

References

Baijot, M., Hatert, F. & Philippo, S. - Mineralogy and geochemistry of phosphates and silicates in the Sapucaia pegmatite, Minas Gerais, Brazil: Genetic implications. Canadian Mineralogist. 50, 1531-1554 (2012)

Vignola, P., Hatert, F., Baijot, M., Rotiroti, N., Risplendente, A. and Varvello, S. - Jahnsite-(MnMnMg), IMA 2017-118. CNMNC Newsletter No 43, June 2018, page xxx; Mineralogical Magazine, 82, xxx-xxx (2018)

IMA group assignments

Other languages

German

Jahnsit-(MnMnMg)

English

Jahnsite-(MnMnMg)

IMA Number

IMA 2017-118

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

German pages

DeWikiPedia - search for: Jahnsit-(MnMnMg)
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English pages

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Locations with GPS information




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