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Schallerite

Pictures (1 Images total)

Rotbrauner Schallerit aus Franklin, New Jersey
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Rotbrauner Schallerit aus Franklin, New Jersey
Belegstück; Bildbreite ca. 5 mm.
Copyright: prospector56; Contribution: prospector56
Collection: prospector56, Collection number: J6C9
Location: USA/Michigan/Houghton Co./Franklin/Franklin Mine
Mineral: Schallerite
Image: 1610100793
License: Usage for Mineralienatlas project only
Rotbrauner Schallerit aus Franklin, New Jersey (SNr: J6C9)

Belegstück; Bildbreite ca. 5 mm.
Collection: prospector56
Copyright: prospector56
Contribution: prospector56 2021-01-08
Locality: Franklin Mine / Franklin / Houghton Co. / Michigan / USA

You find additional Schallerite specimen at the Geolitho Museum

Collectors Summary

Color hellbraun, rötlichbraun
Streak color hellbraun
Hardness (Mohs) 5
Solubility +++ HCl
Crystal System hexagonal, P63

Chemism

Chemical formula

(Mn2+,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 : 32.00, Fe2O3 : 1.80, MgO : 2.90, ZnO : 1.60, MnO : 42.20, As2O3 : 12.87, H2O : 6.76 (Ref: American Mineralogist 81)

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.28-050

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

Classification by Hölzel

9.EP.300

9: SILICATES
E: Phyllosilicates
P: Pyrosmalite-Group

Dana 8th edition

72.04.01a.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
01a: Pyrosmalite group (Pyrosmalite subgroup)

IMA status

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

Mineral status

anerkanntes Mineral

Optical Properties

Color

hellbraun, rötlichbraun

Streak color

hellbraun

Diaphaneity (Transparency)

durchscheinend

max. Birefringence

0.038
Birefringence chart\! Schallerite title=Birefringence chart Schallerite

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

1.681

RI value γ / ε

1.643

Ri mean

1.668

2V angle

Uniaxial (-)

Optical Data Luminescence

Luminescence

keine Fluoreszenz bekannt

Crystallography

Crystal System

hexagonal

Class (H-M)

6

Space Group number

173

Space Group

P63

Cell parameters a (Å)

13.36

Cell parameters b (Å)

-

Cell parameters c (Å)

14.24

Cell parameters a/b or c/a

1.066

Cell parameters c/b

-

Cell parameters α

90°

Cell parameters β

90°

Cell parameters γ

120°

Z

2

Volumne (ų)

2201.17

X-Ray Powder Diffraction

3.547(40),
2.825(30),
2.673(60),
2.466(50),
2.022(50),
1.975(40),
1.688(100),
1.511(60)
XRD chart Schallerite

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)

5

VHN (Hardness Vickers)

390 (ungefähre Angabe abgeleitet aus der Mohshärte)

Density (g/cm³)

3.37

3.484 ( ρ calc. Mineralienatlas )

Instability

+++ HCl

(Co-)Type locality

(Co-)Type locality

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

Preface

Author (Name, Year)

Gage & Larsen & Vassar, 1925

References

Handbook of Mineralogy (Anthony et al.), 2 (1995), 714

Other languages

German

Schallerit

Spanish

Schallerita

English

Schallerite

French

Schallerite

Russian

Шаллерит

https://catalogmineralov.ru/mineral/schallerite.html

CNMNC symbol

Symbol

Slr

Locations with GPS information