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Nelenite

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Nelenit
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Nelenit
Trotter Mine, Franklin, New Jersey, USA. BB: 2,6mm; Ex. R. Feigl Sammlung
Copyright: Mabu; Contribution: Mabu
Location: USA/New Jersey/Sussex Co./Franklin Mining District/Franklin/Franklin Mine/Trotter Mine
Mineral: Nelenite
Image: 1549121279
License: Usage for Mineralienatlas project only
Nelenit

Trotter Mine, Franklin, New Jersey, USA. BB: 2,6mm; Ex. R. Feigl Sammlung
Copyright: Mabu
Contribution: Mabu 2019-02-02
Locality: Trotter Mine / Franklin Mine / Franklin / Franklin Mining District / Sussex Co. / New Jersey / USA

Collectors Summary

Color braun
Streak color hellbraun
Hardness (Mohs) 5
Solubility +++ (HF-H2SO4)
Crystal System monoklin, C2/m

Chemism

Chemical formula

(Mn,Fe2+)16Si12As3+3O36(OH)17

Chemical composition

Arsen, Eisen, Mangan, Silicium, Sauerstoff, Wasserstoff

Unit weight: 2309.5334538 u; Number of atoms in the formula: 101

Info

Empirical formula:

(Mn0.75Fe0.25)16Si12As3O36(OH)17

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)
Hydrogen

H

0.74

17

16.83

1.0079470

17.1350990
Oxygen

O

36.72

53

52.48

15.9994300

847.9697900
Silicon

Si

14.59

12

11.88

28.0855300

337.0263600
Manganese

Mn

28.55

12

11.88

54.9380499

659.2565988
Iron

Fe

9.67

4

3.96

55.8452000

223.3808000
Arsenic

As

9.73

3

2.97

74.9216020

224.7648060

Analysis wt%

SiO2 : 31.12, FeO : 17.12, ZnO : 3.63, MnO : 29.22, As2O3 : 12.46, H2O : 6.42 (Ref: Mineralogical Magazine 84)

Strunz 9th edition incl. updates

9.EE.15

9: Silikate (Germanate)
E: Schichtsilikate (Phyllosilikate)
E: Einfache tetrahedrale Netze aus sechsfach-Ringen, verbunden über octahedrale Netze oder Bänder
15:Schallerit-Gruppe

Lapis Classification

VIII/H.28-040

VIII: SILIKATE
H: Schichtsilikate
28: Schichtsilikate mit anderen Einfachschichten [Si6O15] 6- u.a.

Classification by Hölzel

9.EP.340

9: SILICATES
E: Phyllosilicates
P: Pyrosmalite-Group

Dana 8th edition

72.04.01b.03

72: Phyllosilicates Phyllosilicate Two-Dimensional Infinite Sheets with Other Than Six-Membered Rings
04: Phyllosilicates Phyllosilicate Two-Dimensional Infinite Sheets with Other Than Six-Membered Rings with 4-, 6-, and 12-membered rings
01b: Pyrosmalite group (Friedelite subgroup)

IMA status

Anerkannt von der CNMNC

Mineral status

anerkanntes Mineral

IMA Classification

IMA Classification

 Pyrosmalite group

Optical Properties

Color

braun

Streak color

hellbraun

Diaphaneity (Transparency)

transparent bis durchscheinend

max. Birefringence

0.018
Birefringence chart\! Nelenite title=Birefringence chart Nelenite

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

1.700

RI value γ / ε

1.718

Ri mean

1.706

2V angle

Uniaxial (-)

Crystallography

Crystal System

monoklin

Class (H-M)

2/m

Space Group number

12

Space Group

C2/m

Cell parameters a (Å)

23.24

Cell parameters b (Å)

13.418

Cell parameters c (Å)

7.382

Cell parameters a/b or c/a

1.732

Cell parameters c/b

0.550

Cell parameters α

90°

Cell parameters β

105.22

Cell parameters γ

90°

Z

2

Volumne (ų)

2221.219

X-Ray Powder Diffraction

7.10(40),
3.55(60),
2.878(70),
2.552(100),
2.402(40),
2.104(40),
1.723(50),
1.677(60)
XRD chart Nelenite

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

Crystals 3D

Open larger view

Physical Properties

Hardness (Mohs)

5

VHN (Hardness Vickers)

390 (ungefähre Angabe abgeleitet aus der Mohshärte)

Density (g/cm³)

3.46

3.453 ( ρ calc. Mineralienatlas )

Instability

+++ (HF-H2SO4)

(Co-)Type locality

(Co-)Type locality

USA/New Jersey/Sussex Co./Franklin Mining District/Franklin/Franklin Mine/Trotter Mine

Preface

Author (Name, Year)

Dunn & Peacor, 1984

References

Mineralogical Magazine 48 (1984), 271

IMA group assignments

Other languages

German

Nelenit

Spanish

Nelenita

French

Nelenite

English

Nelenite

Alternative Name

English

Ferroschallerite

CNMNC (IMA)-Number

IMA 1982-011

CNMNC symbol

Symbol

Nln